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V8R2 Release Notes

RecurDyn is a CAE software program in integrated multi-discipline dynamics based on MFBD (Multi Flexible Body Dynamics). RecurDyn consists of Professional and Toolkit and Toolkit is divided as Interdisciplinary and Communicator and Application Toolkits.

Contents of Table

Supported Product ........................................................................... - 4 -

BN8113(x86)/BN8114(x64) .............................................................. - 6 -

RecurDyn/Professional ............................................................ - 6 -

RecurDyn/RFlex ..................................................................... - 6 -

BN8111(x86)/BN8112(x64) .............................................................. - 8 -

RecurDyn/Professional ............................................................ - 8 -

RecurDyn/ProcessNet .............................................................. - 9 -

RecurDyn/Durability ................................................................ - 9 -

RecurDyn/Engine ................................................................... - 10 -

RecurDyn/FFlex ..................................................................... - 10 - RecurDyn/Mesher .................................................................. - 11 -

RecurDyn/MTT2D .................................................................. - 12 -

RecurDyn/Particles ................................................................ - 12 - RecurDyn/RFlex .................................................................... - 12 -

BN8109(x86)/BN8110(x64) ............................................................. - 14 -

RecurDyn/Professional ........................................................... - 14 -

RecurDyn/ProcessNet ............................................................. - 19 - RecurDyn/Belt ....................................................................... - 20 -

RecurDyn/Bearing ................................................................. - 21 - RecurDyn/CoLink ................................................................... - 21 -

RecurDyn/Control .................................................................. - 22 - RecurDyn/Crank .................................................................... - 23 -

RecurDyn/Durability ............................................................... - 23 - RecurDyn/Engine ................................................................... - 24 -

RecurDyn/eTemplate .............................................................. - 24 - RecurDyn/FFlex ..................................................................... - 24 -

RecurDyn/Gear ..................................................................... - 26 - RecurDyn/Hydraulic ............................................................... - 27 -

RecurDyn/Mesher .................................................................. - 27 - RecurDyn/MTT2D .................................................................. - 28 -

RecurDyn/MTT3D .................................................................. - 29 -

RecurDyn/Particles ................................................................ - 30 - RecurDyn/Particleworks .......................................................... - 30 -

RecurDyn/RFlex .................................................................... - 30 - RecurDyn/Tire ....................................................................... - 31 -

RecurDyn/Track_LM ............................................................... - 32 - RecurDyn/Track_HM............................................................... - 33 -

- 4 -

ⓒ 2013 FunctionBay, Inc. V8R2 Release Notes

Supported Product

- 5 -

ⓒ 2013 FunctionBay, Inc. V8R2 Release Notes

Product RecurDyn

V7R3 x86 x64

Professional

RecurDyn/Modeler

RecurDyn/Solver

RecurDyn/ProcessNet

Toolkit

RecurDyn/AutoDesign

RecurDyn/CoLink

RecurDyn/Durability

RecurDyn/FFlex

RecurDyn/RFlex

RecurDyn/Linear

RecurDyn/CATIA Read & Write

RecurDyn/EHD(Steyr)

RecurDyn/ECFD_EHD

RecurDyn/Control

RecurDyn/Hydraulic

RecurDyn/MeshInterface

RecurDyn/Particles

RecurDyn/Particleworks

RecurDyn/eTemplate

RecurDyn/Bearing

RecurDyn/Driver

RecurDyn/Spring

RecurDyn/Tire

RecurDyn/Belt

RecurDyn/Chain

RecurDyn/Crank

RecurDyn/Engine

RecurDyn/Gear

RecurDyn/HAT

RecurDyn/MTT2D

RecurDyn/MTT3D

RecurDyn/Piston

RecurDyn/TimingChain

RecurDyn/Track_HM

RecurDyn/Track_LM

RecurDyn/Valve

Latest version of Parasolid supported: V24.0 Latest version of FEMAP supported: 9.31 Latest version of STEP supported: In case of STEP have no version Latest version of IGES supported: 5.3 Latest version of ACIS supported: R22 Latest version of CATIA supported: R22 Latest version of VSTA of PNet supported: 1.0

Any compiler version related to the use of user subroutine and the creation of dll's: MS VS 6.0, Visual Studio 2005, Visual Studio 2008 and Visual Studio 2010

- 6 -

BN8113(x86)/BN8114(x64)

RecurDyn/Professional

Fixed Problems (19914)There was a phenomenon not to work any button such as

Simulate, OK and Cancel in the Dynamic/Kinematic Analysis dialog

after changing the simulation parameters such as the Maximum Time

Step and so on or just clicking the parameter tap since V8R2 official

version. This problem was related to loading the licenses of Colink and

Control Interface in the Toolkit Configuration Tool. Therefore, this

problem occurred if there weren’t these licenses. In V8R2 SP1.1, this

has been fixed.

RecurDyn/RFlex

Fixed Problems (19764) When making a RFI file by using RFlex Interface Selection

from I-DEAS, NX-Nastran and MSC-Nastran, the option to add the

Stress/Strain Shape has been supported. However, in V8R2 SP1, this

option had disappeared in this dialog. So, this bug has been fixed in

V8R2 SP1.1.

(19831) In RecurDyn Help, there was the wrong information regarding

the supported element list for generating the stress and strain shapes

in the RFLEX function until V8R2 SP1. So, the correct information has

been contained in the following path, Flexible/RFlex/Stress Shape

Interface/Generate Shape.

(18783)(17130) In V8R2 SP1, the function of generating stress and

strain shapes about a RFI file had been upgraded in Stress Shape

Interface so as to get more accurate results. However, there was a bug

concerning the unit converting problem related to the process to

orthonormalize the mode shapes when generating the stress and strain

shapes from a RFI file. So, in case of a small structure with a total

length of less than 100mm, the wrong stress and strain shapes had

been generated in V8R2 SP1. This bug has been fixed in V8R2 SP1.1.

(17130) In case of some elements supported by I-DEAS, there was the

problem not to average the stress/strain shape with respect to each

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node on a RFlex body until V8R2. So, in V8R2 SP1, this bug has been

fixed when upgrading the function to generate the stress/strain shapes.

However, the bug related to No.18783 made the wrong results even

though this bug had been fixed in V8R2 SP1.

(19730)The Top/Bottom information of shell type elements of the

stress/strain shapes of a RFlex body has been added in RecurDyn Help

as followings. (Nastran : Bottom(Z1) stress, MID Strain, Ansys : Top

stress, Top strain, RecurDyn : Top stress, Top strain)

- 8 -

BN8111(x86)/BN8112(x64)

RecurDyn/Professional

Fixed Problems (19503) Faces on a extruded body from a profile could not selected

using the mouse when creating a surface contact or a FaceSurface.

This problem occurred only at the body that the extruded body from a

profile was copied and pasted and then was moved using object control.

(19504) The user could not close Properties of dialog boxes of geo

contacts after opening using multi selection in the case that the value

of No of Max Contact Points is not same.

(19500) The user could not translate during drawing a line or a spline

at Profile mode.

(19530) RecurDyn crashed when closing Properties of dialog boxes of

sphere in cylinder contacts after opening using multi selection.

(19334) An error message appeared and the plotted curve disappeared

when changing the decimals on the y-axis if it zoomed in on plot.

(19487) (19495) The kernel error has occurred when closing Properties

of dialog box of spline if the value of x of the inputted point is same

with it of different points or is negative.

(19604) The value of imported gravity was incorrect when importing

the SDK file.

(19589) The user could not perform dynamic analysis when a sphere

and a cylinder have the same radius for Sphere In Cylinder Contact

since V8R1. It is possible when the radius of cylinder is greater than or

equal to the radius of sphere.

(19062) When the user uses 4 parameter expression, the user can get

correct translational velocity/acceleration and rotational acceleration. If

these expressions are used in the model, the simulation results can be

changed. Additionally, the solution can be changed even though the

user does not use some expressions because the incorrect 4 parameter

expression algorithm was used in RD/Joint formulation until v8r2

official version.

(19062) When entity is a marker in Scope Entity, the results of velocity

and acceleration were different from a body. In case of a marker, the

reference marker became the base marker and in case of a body,

Ground Inertia marker became the base marker. So, in V8R2 sp1, it is

fixed that Ground Inertia marker become the base marker regardless

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with the type of entity.

(19381) When the user uses the “SENSORDETECTEDPOINT” in the

laser sensor, the velocity and acceleration value was not correct in

some situation.

(19641) Even though Parametric Point was defined to origin of

FaceSurface, relation between origin and PP was lost after the user

closed property dialog once.

(19612) The customized view operation did not work in the working

window after loading an animation in Plot.

(19639) The preview of patches was not changed when the user

changed Surface Type from Triangle to Quad after creating Geo contact

using "Surface, Surface" options.

(19541) "Auto Fit after drawing curve" option in Settings dialog of the

Draw group did not work after operating the Zoom function in Plot.

RecurDyn/ProcessNet

New Functions Durability Analysis

The interfaces for durability analysis have been added. Setting the extrapolation type in Spline

A method to set the extrapolation type in spline has been added.

Fixed Problems (19453) RecurDyn crashed when creating a expression using

ISubsystem.CreateExpressionWithArguments function with wrong

arguments.

(19393) The value of angle was set to the minus value depending on

the direction of second point when creating an arc guide.

(19653) RecurDyn crashed when performing the code of

"ISeries.Visible = false".

RecurDyn/Durability

New Functions Rainflow Counting

RecurDyn/Durability couldn’t have shown the Rainflow Counting results

to determine the stress/strain range, the mean stress/strain and the number of cycles from the defined time history until V8R2 official

- 10 -

version. From V8R2 SP1, the Rainflow Counting results can be shown in an Excel spreadsheet as a 3D chart automatically by clicking the

“Rainflow Counting” button after calculating fatigue results. Of course, the raw data to draw the chart can be shown.

Supporting the user-defined SN curve

RecurDyn/Durability hasn’t supported the user-defined SN Curve which

contains both stress/strain amplitude and the number of cycles since V8R1. However, in V8R2 SP1, the SN curve can be made by user input

data in a table. In addition, by using several functions such as Import, Export, Draw and so on, it is easy to make and modify the user-define SN curve. The user-defined SN curve can be applied to calculate the

fatigue damage and life, but it can’t be applied to the safety factors.

Fixed Problems (19330) The information about the material was not updated at the

XML file if the user modified it in Material Manager dialog of Fatigue

Evaluation dialog box.

(19330) In V8R2, in order to save the time to calculate the fatigue

results, it has been implemented to generate the output file for

stress/strain results on the center of free-face element such as *.dsrd

and *.derd. However, there was a problem not to reset these files

when performing the dynamic analysis again. So, the same fatigue

results had been derived even though the dynamic analysis had

performed with the different loading condition when not using the

option of “Create Output Folder” in the Modeling Setting. This problem

has been fixed.

RecurDyn/Engine

Fixed Problems (19056) The error occurred when performing an analysis a engine

model that a BC was defined with a body in a subordinate subsystem.

RecurDyn/FFlex

New Functions New subroutine functions for a nodal force

(18221) It is not easy to define complicated load for a node set using existing nodal_force user subroutine. So, RecurDyn supports a new function as nodal_force_ext user subroutine. If using the new user

- 11 -

subroutine, the user can define the various forces such as distributed load.

Nodal_Force_Ext GET_FFLEX_NODEPOS

GET_FFLEX_NODETPOS GET_FFLEX_NODERPOS GET_FFLEX_NODEVEL

GET_FFLEX_NODETVEL GET_FFLEX_NODERVEL

GET_FFLEX_NODEACC GET_FFLEX_NODETACC GET_FFLEX_NODERACC

EULERANGLE ORIENTATIONMATRIX

Upgraded Functions (19676) When the user uses the nodal_force user subroutine,

RecurDyn/Solver did not evaluate the Jacobian, this can cause slow

solving speed. In order to enhance the solving speed, the Jacobian

evaluation was added in V8R2 sp1. This can cause the solution change.

Fixed Problems (19458) Contour results of the stress and strain about a body defined

the plastic material are incorrect if the value of Plot Multiplier Step

Factor in Dynamic/Kinematic Analysis dialog is more than 2.

(19534) RecurDyn crashed when clicking the Draw button in Plastic -

Isotropic-Kinematic dialog after the user set the Isotropic Hardening

(HI) to 0.

(18221) It is not easy to define complicated load for a node set using

existing nodal_force user subroutine. So, RecurDyn supports a new

function as nodal_force_ext user subroutine. If using the new user

subroutine, the user can define the various forces such as distributed

load.

RecurDyn/Mesher

Fixed Problems (18793) The position of CM and the mass for the meshed body was

changed after meshing a CAD geometry as Solid10 element .This

phenomenon is more conspicuous when meshing it small.

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RecurDyn/MTT2D

Fixed Problems (19454) In the case of XY working plane, a Linear guide could not be

selected using the mouse for creating a PGuide Edge guide if the Linear

guide overlaps with some body.

(19512) In case of defining a Parametric Point in the center of the

Flexible Fixed Roller, the position of joint included in the roller group

was not updated when changing the value of the Parametric Point.

(19640) When the user selects "Down" as the contact normal direction

and the arc guide radius is small, incorrect error message for the

contact buffer radius evaluation can be occurred in the solver. This

error control was improved.

(19345) Movement of guides was strange when playing an animation if

Rendering Mode is "Hidden Line Remove" and "Hidden Line In Gray".

RecurDyn/Particles

Fixed Problems (19536) RecurDyn could not solve the model if names of Particle Set,

Wall and Material were set with a multi-language.

RecurDyn/RFlex

New Functions Supporting to import stress shape and strain shape using Ansys

MAC file

Ansys MAC file for RFI file generation has been updated for importing stress shape and strain shape. Stress shape and strain shape can be added when the RFI file is generated from the Ansys outputs made

with the new MAC file.

Upgraded Functions Generating stress shape and strain shape

RecurDyn/Rflex has supported the function to generate stress/strain

shapes on a RFI file with just only mode shapes through the Stress Shape Interface. However, when compared with the stress shape and strain shape

generated by FE software such as NASTRAN and ANSYS, the accuracy

- 13 -

of stress/strain results by using the Stress Shape Interface had been low in the special area where the forces or the boundary condition are

applied. Therefore, in V8R2 SP1, in order to improve the accuracy the

stress/strain results in this case, RecurDyn has been implemented the modified stress/strain recovery method when using stress/strain shapes generated RecurDyn/RFlex.

And then, these results will be very similar when compared with the stress/strain results from a Rflex body with the stress/strain shapes

generated by FE Software

- 14 -

BN8109(x86)/BN8110(x64)

RecurDyn/Professional

New Functions Geo Contact

The contact element for the general purpose has been added. This

element can be used in the case of rigid-rigid, rigid-flex, flex-rigid, flex-flex geometries.

User Define String

It is possible to define the string as a Subentity. This string entity can

be used in the user subroutine. Sensor Output Expression

The expression of "SENSORDETECTEDPOINT" has been added. Using this expression, the information of detected point by general sensor can be calculated.

RFlex Stress/Strain Request

It is possible to use the strain, stress of RFlex body in Request. Error message

The user can output a list of entity which has the biggest force, when the error message, "Stepsize is too small" is output.

CUBSPL Interpolation

The Cubic spline interpolation function is added in Expression.

Quadratic Extrapolation

The quadratic extrapolation option has been added in Spline.

Display Progress

The progress of current simulation is displayed by the % on Status Bar.

Elapsed Time

The elapsed time after starting a simulation is displayed on Status Bar.

Display RMD Export Time

The duration time of the generating RMD file when exporting RMD file

is displayed in Output Window. Display Converting Time

The duration time of converting from RMD file when simulating is displayed in Output Window.

Tooltip in Working Window

The Tooltip function which displays the general bodies, general

markers, and parametric points has been added. Auto fit when Working Plane Change

The Auto Fit when changing working plane function has been added. If this option is used, the screen view is optimized automatically when

changing working plane using View Change, Rotate Working Plane and Working Plane Change (Axis) toolbars.

- 15 -

Rotate Working Plane

The Rotate Working Plane function has been added to View Control Toolbar. The working plane is rotated by 90 degrees when using this function.

View Snap

The View Snap function has been added to View Control Toolbar. The current view is rotated to the Plan view or Isometric view of the nearest direction from the current view.

View Preset

The View Preset function has been added to View Control Toolbar. It is

useful to preset the view of window. General Interface

When the user double-clicks the PV, PP, PVC, PPC, Spline, Expression, etc. in Database, the selected items are highlighted in the open dialog.

Plot Drawing

It is possible to use the scroll bar to use the zoom function in the plot

drawing. Campbell Diagram

A new function has been added for plotting the transient Campbell diagram. This function is performed automatically the STFT(short

time Fourier transformation) process using time domain data and plots the Campbell diagram on the plotting window.

This Campbell diagram function will be much helpful for the system engineer who wants to analyze a rotor dynamic system using dynamic analysis data.

Body Color

RecurDyn supports 300 colors of body. The colors are applied randomly. This function will be set in Display setting.

Upgraded Functions Solid Contact

The contact force calculation algorithm has been improved by

evaluating more accurate contact plane and contact point. N-R type of a static analysis

The “Auto Convergence Factor” option has been added in the N-R type of a static analysis. So, it does not need to consider Convergence

Factor when performing the static analysis.

Export Data in Plot

The head style of the exported txt data from Plot was different from the data style. A space has been added to the data, so the header and

the data come into pieces when importing the txt data file to Excel. Shortcuts about Working Plane Change

Shortcuts have been created for all components in Working Plane Change. And, Shortcuts have been added for "Change to YX", "Change to ZY", "Change to XZ" in Working Plane Change (Axis).

Changing the default of joint creation method

- 16 -

The default option of creation method for Joint, Force, Connector is changed from the point selection method (Point) to the body selection

method (Body, Body, Point). Importing files

The multi-selection is available to the File Import dialog. So, it is useful to import lots of cad file.

Setting of Layer number about Ground

The user can define the layer number of Ground body. Until V8R1, the

Ground body has no layer number. Selecting all PPs and PVs for DP

The Check All button has been added to change the DP state of all PPs and PVs.

Changing the size of Deleting Unused Markers dialog

The Deleting Unused Markers dialog has been changed to the resizable

dialog and the default size is increased. Changing the size of Select Box dialog

The size of select box dialog is increased. So, it is easy to know the selected entity.

Renewing the Icon Setting dialog

The Icon on/off and Icon/Marker size dialogs have been integrated.

And the item state of dialog is applied in real-time without clicking the Apply button in the dialog.

Drag and Drop from Database of Plot to ProcessNet dialog

It is possible to drag and drop components in the Database of Plot to

the ProcessNet dialog. Language Selecting Tool

The Language Selecting Tool can change the language without an administrative right.

3 dimensional spline

The 3 dimensional spline has been supported in Spline.

New Format for road data

New format is available to create road data. It is easy to create with

user's own road data. Batch Simulation

Two commands have been added. /MatchSolvingStepsize [on/off]: Flags to use the Match Solving

Stepsize with Report Step option that is supported at the Dynamic/Kinematic analysis.

/ran [on/off]: Flags to create the RecurDyn Solver-Generated

Animation file Force Display Setting

The accessibility has been improved by adding the Force Display setting to the Animation Control group in the ribbon. The setting is

directly applied without applying the OK button or the Apply button. Gravity Setting dialog

The parametric value can be used in Gravity Setting dialog. So, it is useful to control gravity.

The point of recovering strain and stress

- 17 -

Recover strain/stress data is generated on the end of simulation. If the simulation is paused in the mid of analysis, the stress and strain can

be viewed by the contour. Graphic Quality up

The user can improve the graphic quality for each body by using the Advanced Graphic Quality option than using the basic Graphic Quality

option. This function is supported in the Properties of Body dialog box. Stress/Strain Expression

The 4th factor has been added to set Top/Bottom in the Stress/Strain expression. If the factor is not inputted, Top is used as the default

option. The use of the factor is followed by Flexibility Setting to V8R1. So, if the user uses V8R1 model, the result will be changed to Top regardless to Flexibility Setting because the 4th factor is not inputted.

(17746) Rotational CMotion Constraints

The stability of rotational CMotion constraints has been improved by changing the algorithm used to compute the Euler angles.

(19011) Use small data processing in Plot

The Use small data processing option was added as default and current setting in Plot. It is possible to fit the small plot data which are less

than 10e-5. (19138) Default light Setting

The default light setting was changed to represent more realistically in Shade Mode. This setting is applied to new created bodies in V8R2. In

case of models created in the previous version, the user uses the Get Default function in Light Setting after opening the model.

Fixed Problems (15804) The time integrator has been improved in order to consider

the solid contact's maximum step size factor correctly.

(17114) The definition of the damping ratio has been added in

Eigenvalue analysis report of the OUT file. The damping ratio of the

Eigenvalue analysis is defined as a damping relating to the critical

damping (=C/C_critical).

(17601) The eigen values and eigen vectors have not been written in

the OUT file when simulating the Dynamic analysis with the Eigenvalue

analysis.

(18651) Some mode IDs in the OUT file have been written in "***"

when the mode ID is more than 999 after performing the eigenvalue

analysis.

(18811) The contact force result of the Sphere to Arc Revolution

contact was not stable for a bearing or CV-joint modeling.

(18343) The static analysis was incorrectly performed. In the static

analysis, the error tolerance of the dynamic analysis (default = 5e-3)

was used instead of the error tolerance of the static analysis (default =

1e-3). But, the iteration for the static analysis can be increased in

- 18 -

V8R2 because the default error tolerance for static is lower than the

error tolerance of the dynamic analysis.

(18427) In V8R1, the friction force was opposite when inputting the

spline friction force in the case of the Circle to Curve Contact and the

Curve to Curve Contact.

(17813) The analysis was failed if an analysis was performed when the

PTCV was defined by the Request after using a PTCV by the Motion

function in Expression. Also, the Expression was incorrectly displayed in

a scope.

(18337, 18424) Zero was always outputted because the value of

friction coefficient was not calculated when using the USUB as contact

force.

The result was not correct if the component was S1 when using the

SheetShell as the entity of the Stress function in Expression.

(18340) In case of PTCV, the orientation of base marker using floating

marker was always fixed as the inertia marker to V8R1. But, the x axis

is the axis direction of the curve and the y axis is the normal direction

of the curve in V8R2.

(18114) The geometry file in the Parasolid format (x_t, x_b) has not

been exported if the file name's character number is more than 60

except the extension. The enabled number of character is up to 256.

(18185) When the rss file had a multi-byte character, the batch process

was not executed from the file. In V8R2, the batch process is executed

if the user performs an analysis after re-creating the rss file. Also, the

batch process is executed if the encoding should set to UTF-8 when

using the rss file created in the previous version.

(14832) A distortion occurred because of the difference between the

screen ratio and the aspect ratio of the resolution in the animation

movie created by Plot. The view part of GUI has been modified to cut

by the aspect ratio for the long part of the screen and the view part of

Plot has been adjusted to create some distortion.

(18623) The output value was correctly outputted in the rpi file if the

dynamic analysis was only performed using the scenario analysis. But,

the output value was not outputted if the static analysis or another

analysis with the dynamic analysis was performed using the scenario

analysis.

(14778) The name of joint in the subsystem was Dummy Joint when

checking the state variable the after calculating the state matrix by the

model with a subsystem. But, the correct name of the joint is displayed

in V8R2.

(18082) RecurDyn was crashed when performing an analysis using the

USUB of Differential Equation and Variable Equation if the number of

- 19 -

user parameter is more than 31.

(18377) When the user inputted the value of end time as more than

six-digit of significant figures, the dynamic analysis was performed up

to the end time of six-digit of significant figures actually. In V8R2, it is

possible to use up to fifteen-digit of significant figures.

(17999) Importing a spline or an outline with Little-Endian encoding

failed.

(18420) The input window of Reference Frame was not activated

correctly depending on the component in Entity Scope. All entity has

been fixed by synchronizing with plot.

(18643) A position of contact point was incorrect in the outward case

of the Sphere to Arc Extrusion contact. So, the contact force and force

display were incorrect.

(19314) When the value of Start Arc Angle was set as a negative value,

the contact force was not generated in the Sphere to Arc Revolution

contact.

Known Problems (19023) RecurDyn is crashed when clicking the Draw button in all

dialogs that Draw function exists in Windows 8.

RecurDyn needs to install .NetFramework 2.0 to use ProcessNet. The

installer for RecurDyn cannot install .NetFramework 2.0 automatically

in Windows 8. So, the user has to install .NetFramework 3.5 before

installing RecurDyn in Windows 8.

RecurDyn/ProcessNet

New Functions Getting a list of names for drawing in Plot

This ProcessNet Function offers a list of names, so the users can use it

in the plot drawing function of ProcessNet: IPlotDocument.GetPlottableNameList.

DOE Analysis

The interfaces to set Design study variables for the DOE analysis have

been added. Adding collection functions for IMTT2D

The collections for IMTT2D entities as Fixed Roller, Movable Roller, Group Sheet, Nodal Force, Contact Sheet to Sheet, and Guide have

been added.

- 20 -

Creating the folding sheet

A method to create a folding sheet with a point list file has been added. Creating the sheet using a curve

A method to create a sheet with a 2D curve has been added. Adding the functions to get entities from the MTT2D Sheet

Group

Methods to get Bodies, Joints, Forces from the MTT2D Sheet Group have been added.

Track HM

The functions for TrackHM have been added. Adding functions for RFlex, FFlex

FFlex

CreateFFlexMaterialPlasticity CreateForceLoadsUSUB ExportDurabilityInterface

ExportMeshData RFlex

CreateRFIFIleFromNastranOP2 RFIOptimizer Durability Interface

MDF Export CreateModalForce, CreateModalPreload, CreateModalLoadCase

Creating Expression with Arguments function

The ISubsystem.CreateExpressionWithArguments function, the

IExpression.Arguments function have been added. Selecting a point in GUI

The IModelDocument.SelectPointUsingGUI function has been added. Saving the plot

The IPoltDocument.FileSave function has been added. Adding functions for SolidContact

The IContactSolidContact.UseContactOutputFile function, the IContactSolidContact.OutputMarker function, the

IcontactSolidContact.ContactPoints function have been added. Cutting Plane

The ICuttingPlane function has been added.

RecurDyn/Belt

Upgraded Functions Principal stress and intensity stress in Plot

The output results of the principal strain/stress and intensity

strain/stress for Beam Belt and Shell Belt have been included in a plot result.

- 21 -

(16254) Considering the recovery point in the BeamBelt

The stress recovery was performed by considering the recovery point in the beambelt. It was calculated in the neutral axis to V8R1.

Fixed Problems (17907) (18462) The sensing value is not measured in spite of the belt

in the sensor range.

(17447) The behavior of the shellbelt was changed by the unit system

if the dynamic analysis was performed because the value of Drilling

Stiffness Factor in the shell element was always fixed. But, the level is

specified as L^2 in the dialog and the default value is 1 in the unit

system of mm in V8R2. So, the value is changed by the unit system.

RecurDyn/Bearing

Fixed Problems (16518) The bearing was fixed in the place and the beam force was

only moved when performing the Object Control function for the base

body of a bearing.

RecurDyn/CoLink

New Functions CoLink block control

The relation line is automatically connected between the blocks by

clicking the block for connection with the Ctrl key. The Add In/Out function is added to the right mouse menu in the

Subsystem block. It is possible to add the Input and Output blocks.

CoLink Toolbar (Align Toolbar)

Align Toolbar has been added in the CoLink layout to arrange the

blocks. CoSim block

The function of CoSim block is added to co-simulating with User Program. This block supports only User Program Host Mode.

- 22 -

Upgraded Functions Analysis in the Subsystem block

The analysis can be performed if there is no Input and Output blocks in

the Subsystem block. Ch Function block

The function of Ch Function block has been improved to receive not only the scalar input but also the vector input.

RecurDyn block

The property dialog of RecurDyn block supports the list of Plane Inputs

and Plant Outputs defined in RecurDyn. Renewing CoLink Layout

The CoLink layout has been changed to new ribbon styles like RecurDyn.

Mux and Demux block

The selection functionality of Mux and Demux block has been improved

Fixed Problems The branch line of moving block was disconnected when moving a

block.

RecurDyn/Control

Upgraded Functions Co-simulation with User Program

The user does not have to close RecurDyn model when co-simulating in User Program Host Mode. If using this function, the user have to use new library files provided at V8R2.

Fixed Problems (18736) In the case of the co-simulation, the maximum time step was

not changed when performing the simulation using Batch if the

maximum time step is larger than the sampling period.

- 23 -

RecurDyn/Crank

New Functions CCMAV

The “Torque Control for Constant Mean Angular Velocity of a crank-

shaft” option has been added.

Fixed Problems (18187) When the Engine Type is Horizontal, the firing timing in

simulation is different from the firing angle in Cylinder Layout dialog.

RecurDyn/Durability

New Functions Supported to the RFlex Body

RecurDyn/Durability has been extended to include RFlex. Previously, in V8R1, RecurDyn/Durability only supported FFlex. In order to use

Durability analysis with an RFlex body, a Patch Set or an Element Set must be defined for the RFlex body in Body Edit Mode.

Upgraded Functions Safety factor about the compressive stress

When calculating the safety factor by using the Goodman method in

case of the compressive stress result, it is possible to reasonably consider in this case. Until V8R1, the results of safety factor about the

compressive stress have dealt with just the tensile stress results.

Fixed Problems (17948) RecurDyn was crashed when the durability analysis was

performed in the assembly mode. But, the current system with the

subordinate subsystem is considered in V8R2.

- 24 -

RecurDyn/Engine

New Functions CCMAV

The “Torque Control for Constant Mean Angular Velocity of a crank-

shaft” option has been added.

RecurDyn/eTemplate

RecurDyn/eTemplate is an automation tool that allows RecurDyn to be controlled by specially-formatted Microsoft Excel spreadsheets. This allows

Excel spreadsheets to be used to store the data to completely define models. All data required to define a model can be placed in the Excel spreadsheet. Using the power in Excel to manipulate data, eTemplate enables users to

create very sophisticated and powerful tools to customize RecurDyn to improve their workflow and their data management.

RecurDyn/FFlex

New Functions Plastic Material

The plastic materials are a J2 plasticity model (also known as a Von Mises plasticity model) which is strain-rate independent. The plastic

materials can be used with Solid8 and Shell4 elements in FFlex bodies. The plastic materials make to consider the permanent deformation caused by the load over the yield stress. In addition, two kinds of work

hardening are modeled in RecurDyn’s plastic materials such as the isotropic hardening and the kinematic hardening.

FFlex Regenerator

The user can see the contour display of shell top/bottom without

repeating the simulation. Contour Display with respect to user-defined marker has been

improved. Display Output File Generating Time

The duration time of the generating FFlex output file (erd, srd) is displayed in Output Window.

Render Feature Line Only

The Render Feature Line Only function has been added in the Display

option in FFlex edit mode. This function removes all mesh lines, but displays the Feature line, Node set, Patch set, Element set, B.C, and Output.

- 25 -

Upgraded Functions Stress Recovery

The stress recovery routine has been upgraded. So, the result may be

changed. Additionally, the multi thread computing has been applied to improve the speed for the large size.

Outputting Stress/Strain of Shell element

In the case of shell element, the result of top and bottom about

Strain/Stress outputs both in a plot result. Until V8R1, the result of top or bottom about Strain/Stress outputs depending on the Flexibility

Setting. Selecting and deleting FDR element

The function has been improved to select and to delete the FDRs generated in FFlex or the FDRs of imported FFlex body. Until V8R1, the inconvenience method was used to operate the FDRs. But, it is easy to

select and delete the FDRs by the mouse operation in Database window.

Automatic Outputs for Markers

When applying Joints and Forces to a flexible body, the Output nodes

in the FFlex edit mode should be defined to check the results of neighboring node about the markers of Joints and Forces. The

inconvenience method was used to define the output nodes once more after the simulation if the user didn't set these outputs. In V8R2, the adjacent output nodes of makers in entities such as Joints and forces

are automatically defined using Automatic Outputs for Markers option in Flexibility Setting.

Creating Output nodes

Until V8R1, it was possible to select only node type when defining the

outputs. However, if the output was defined to the FE sets such as patch set, node set, element set and the boundary condition, it would

be inconvenient to define each node output. So, the definition method of Outputs for the FE sets to support by directly selecting the FE sets has been improved.

Selecting components of Stress/Strain for creating output file

Until V8R1, all components of Stress/Strain were created at the erd

and srd file. So, the size of files was big. In V8R2, only some components user wanted are created at the erd and srd file.

Import dialog

The user can import FFlex data at the reference frame of geometry.

Creating Patch Set

It is possible to create patch set by selecting a node set. The patch set

is defined patches of the selected node set. Creating Node Set

It is possible to create node set by selecting a patch set or an element set. The node set is defined all nodes of the selected set.

The time of the Stress Recovery

The time of the stress recovery and the strain recovery was decided by

the every step and the end of simulation in V8R1. But, the time of the recovery is always decided by the end of simulation in V8R2.

- 26 -

(18223) Cylinder To FSurface contact

The calculation algorithm of the contact force has been improved for the contact between the cylinder side face and the flexible surface.

(18126) Flexible contact for the 4-node type patch contact

The contact search algorithm has been improved for the 4-node type's

patch contact. The related contact elements are as follows: Cylinder To FSurface

FCurve To FSurface FSurface To FSurface

Surface To FSurface Sphere To FSurface

(16902) FFLEX Extract Function Improvement

The extract function for FFlex has been improved. If the user creates

the extracted model in V8R1 or previous version, that model can have a problem because the result of V8R1 or previous version was not reasonable. In this case, the user needs to re-create the extracted

model or needs to correctly modify the joint and force in V8R2.

Fixed Problems The Use Large Rotation option in has been removed by improving

performance of Flex.

(17324) When deactivating a FFlex Body in Scenario analysis, the

reaction force of Joint connected to the FFlex Body was incorrect.

(17648) RecurDyn was crashed when performing an analysis after

inputting the material properties of Connecting Body such as mass and

inertia moment to below 1e-020. But, an error occurs if the material

properties are inputted to below 1e-015 in V8R2.

(17447) The behavior of the FFlex body was changed by the unit

system if the dynamic analysis was performed because the value of

Drilling Stiffness Factor in the shell element was always fixed. But, the

level is specified as L^2 in the dialog and the default value is 1 in the

unit system of mm in V8R2. So, the value is changed by the unit

system.

RecurDyn/Gear

Fixed Problems (18314) RecurDyn was crashed when a model with many GearContacts

(Cur-Cur) was performed.

- 27 -

RecurDyn/Hydraulic

New Functions FMI

Co-simulation "fmu" can be imported and simulated.

RecurDyn/Mesher

New Functions Local Remesh

The Local Remesh function allows to remesh the results from RecurDyn/Mesher by changing the element size parameter of the

specific faces by the user. Especially, when checking the stress/strain results in the coarse mesh region, it is necessary to change the coarse mesh to the fine mesh if the user wants to get more accurate the

stress/strain results. Advnaced Mesh

Advanced Mesh is another auto mesher to make the mesh of CAD Geometry automatically like Mesh. The existing Mesh has the re-mesh

concept so that it can use the graphic tessellation date which is the first mesh results from a CAD geometry. So, this mesh uses the CAD

geometry indirectly and there is low failure to generate the mesh data. On the contrary, it is possible to generate mesh date with a relatively small number of nodes and the higher quality mesh results because

the Advanced Mesh uses the CAD geometry directly. In addition, it is possible to implement the similar mesh results from the traditional

Mapped Mesher that is usually supported in the FE software although this mesh can’t perform the general mapped mesh concept.

Upgraded Functions Assist Modeling

Until V8R1, it was possible to select just one surface data when

applying Assist Modeling in order to make the FDR element automatically. Now it is possible to select multi-surfaces by the new

button.

- 28 -

RecurDyn/MTT2D

New Functions FE Roller

Flexible fixed and movable rollers are developed. The flexible rollers

are modeled with the Shell4 and RBE. Tension Sensor

The tension sensor has been added in MTT2D. (Output is Tension)

Upgraded Functions Selecting the entity for sensing

(15449) The sensor of MTT2D is possible to select the entity. So, it is

possible to sense about only the selected entity. Attack Angle about a head and tail of Sheet in Plot

The values of attack angle about a head and tail of sheet have been included in a plot result. And, it is applied to arc guide, linear guide. Until V8R1, only the values of attack angle about a head of sheet

outputs in a plot result. Air Resistance force in Plot

The output results of air resistance force at each node for MTT2D have been included in a plot result.

Guide Velocity

The expression type has been added to the guide velocity for the arc

guide, linear guide, and Pguide edge in MTT2D. Hold down the noise of sheet contact forces

The option for reducing contact noise between sheet and other entities is set as the default option from V8R2. The option named Hold down

the noise of sheet contact forces is in the SheetGroup dialog box.

Fixed Problems (18558) In the case of a pairs of rigid rollers and sheet contact, when

the option for reducing contact noise between sheet and another

entities was set, the speed of the simulation was slow.

(18361) The color was changed to the grey color when opening the

model created in V7. But, the existing color has been kept in V8R2

when opening the model created in V7.

(16856) The position of Linear Guide was not changed as following the

orientation of mother body.

(18186) The wrong information was included in MTT2D model when

importing after exporting the rdp file for a MTT2D model used to PVs

such as Density, Young's Modulus, Damping Ratio and Sheet Curl

Radius in the assembly mode.

- 29 -

(18532) The analysis was failed if an analysis was performed a model

that the initial velocity and the air resistance coefficient was applied at

the same time.

RecurDyn/MTT3D

New Functions Tension Sensor

The tension sensor has been added in MTT3D. (Output is Stress)

Upgraded Functions Distance Sensor

(15445) The sheet can be used to measure the distance of the outer

line when moving the depth direction of sheet. Selecting the entity for sensing

(15449) The sensor of MTT3D is possible to select the entity. So, it is possible to sense about only the selected entity.

Principal stress and intensity stress in Plot

The output results of the principal strain/stress and intensity

strain/stress for Sheet Shell have been included in a plot result. Air Resistance force in Plot

The output results of air resistance force at each node for MTT3D have been included in a plot result.

Fixed Problems (18283) The value of the boundary position was not correctly used

when the ShellSheet is curved.

(18347) The Align Sheet function did not work correctly.

(17447) The behavior of the ShellSheet was changed by the unit

system if the dynamic analysis was performed because the value of

Drilling Stiffness Factor in the shell element was always fixed. But, the

level is specified as L^2 in the dialog and the default value is 1 in the

unit system of mm in V8R2. So, the value is changed by the unit

system.

- 30 -

RecurDyn/Particles

RecurDyn/Particles allows a MBD system with a lot of parties with micrometer size to analysis in the RecurDyn platform. In order to simulate the particle

systems, a discrete element method (DEM) should be applied. In addition, GPU can boost the calculation speed of parallel programming, and GPU makes DEM for applying to the granular and discontinuous materials easily, especially

in granular flows, powder mechanics, and rock mechanics. And then, RecurDyn/Particles supports to make lots of particles easily by the

click button. Besides, it is possible to perform all procedures such as pre-processing, simulation and post-processing in the RecurDyn platform.

RecurDyn/Particleworks

The fluid analysis noted as the limit of simulation and the particles with

viscosity are provided by an analysis for a number of spheres. When the particles apply a force to a body, the reaction force and torque are The fluid analysis noted as the limit of simulation and the particles with

viscosity are provided by an analysis for a number of spheres. When the particles apply a force to a body, the reaction force and torque are

generated and a dynamic system formed from them can move the body. The moving-particle semi-implicit (MPS) method is a computational method for the simulation of incompressible free surface flows. It is a macroscopic,

deterministic particle method (Lagrangian meshfree method) developed by Koshizuka and Oka (1996). The MPS method is similar to the SPH (Smoothed-

Particle Hydrodynamics) method (Gingold and Monaghan, 1977; Lucy, 1977) in both methods which provide approximations to the strong form of the partial differential equations (PDEs) on the basis of integral interpolate.

However, the MPS method is applied to the simplified differential operator models solely based on a local weighted averaging process without taking the

gradient of the kernel function. In addition, the solution process of MPS method obtained by a semi-implicit prediction-correction process differs to that of the original SPH method.

RecurDyn/RFlex

New Functions Display Output File Generating Time

The user can see the duration time in the generated RFlex output file. (rfa, erd, srd)

- 31 -

Upgraded Functions (16806) (16767) (16588) (16765) (16776) (16299) (16920)

(16925) Update RFI file

RFI Optimizer has a new type named Update RFI file. The new type

has two functions which are to reduce the file size and to change the RFI file format.

Supporting MSC Nastran 2011

RecurDyn supports up to the MSC Nastran 2011 version. Supporting Ansys 14.5

RecurDyn supports up to the Ansys 14.5 version.

RFlex output

The user can create a Scope Entity about RFlex outputs.

Speed up for RFlex models

In case of RFlex models that have RFlex bodies included lots of mode,

the solving speed is faster than the previous version of RecurDyn. Selecting components of Stress/Strain for creating output file

Until V8R1, all components of Stress/Strain were created at the erd and srd file. So, the size of files was big. In V8R2, only some

components user wanted are created at the erd and srd file. This function is Output File Option, and it is added in Flexibility Setting and FFlex Regenerator dialog.

Fixed Problems The Dynamic Correction Mode function has been removed by using the

CMS file.

The stress and the strain could not be displayed without the erd, srd

files in Contour. The displacement could be displayed without the rfa

file in Contour.

(18506) (18843) Beam group was displayed different position in

animation after performing an analysis if the beam group exists in the

subsystem.

(16442) In the case of Plane2 element of Ansys, the Remove Mid-Node

Related Information option was not applied.

RecurDyn/Tire

New Functions General Tire

RecurDyn supports a general Tire toolkit. The GTire(General Tire) toolkit supports MFTire and RecurDyn Tire.

- 32 -

Fixed Problems (18522) The road normal vector and penetration was incorrectly

calculated in the Fiala Tire and the UA Tire.

FTire has been removed.

RecurDyn/Track_LM

New Functions Support Track Flexible Link

It is available to change one more Track Link bodies as Flexible bodies. Support CAD Geometries in Track LM

RecurDyn is now able to create the Track (LM) system with the user's CAD geometry (Sprocket, Flanges, Link)

Pin- Bushing Geometry Position

The left and right pins of the track(LM) link can be selected to calculate more accurate friction force of the sprocket with the link pin.

(11969) Contact output file

The contact points between the track-link and the sprocket are outputted as a file. The Contact output file option is supported in the

Sprocket dialog box.

Upgraded Functions Multi Properties about Ground

It is possible to apply multi properties about Ground with the Track To

Surface contact in the Track system.

Fixed Problems (18335) The Friction force of Track Road contact has been improved in

order to consider the static friction correctly.

(18422) The speed of the model is lower by the track to surface

contact than the contact between the link and the ground in a track

model with the same condition. Because the logic for updating the

patch information in V8R2 has optimized, the speed of the model is

faster than the previous version. But, the speed can be lower than the

contact between the link and the ground because the track to surface

contact is needed to update the location information of road at every

step.

(17188) When the contact force is generated between the track-link

pin and the sprocket, the contact point was not considered correctly. In

V8R1, the contact point was defined in the track-link pin's center. In

- 33 -

particular, when the friction force is calculated, the relative velocity in

the contact position can have a large error. So, the contact point is

correctly defined in V8R2. The contact point will be on the sprocket

surface and this will generate the correct friction force.

(18139) The contact between the track link and the roller flange was

not correct. The length of link was not considered.

(18259) In case of the partial search contact between the sprocket and

link, RecurDyn was crashed when performing an analysis for the model

that the contact did not occurred at the start time.

RecurDyn/Track_HM

Upgraded Functions Multi Properties about Ground

It is possible to apply multi properties about Ground with the Track To

Surface contact in the Track system.

Fixed Problems (18335) The Friction force of Track Road contact has been improved in

order to consider the static friction correctly.

(18422) The speed of the model is lower by the track to surface

contact than the contact between the link and the ground in a track

model with the same condition. Because the logic for updating the

patch information in V8R2 has optimized, the speed of the model is

faster than the previous version. But, the speed can be lower than the

contact between the link and the ground because the track to surface

contact is needed to update the location information of road at every

step.

(17188) When the contact force is generated between the track-link

pin and the sprocket, the contact point was not considered correctly. In

V8R1, the contact point was defined in the track-link pin's center. In

particular, when the friction force is calculated, the relative velocity in

the contact position can have a large error. So, the contact point is

correctly defined in V8R2. The contact point will be on the sprocket

surface and this will generate the correct friction force.

(18259) In case of the partial search contact between the sprocket and

link, RecurDyn was crashed when performing an analysis for the model

that the contact did not occurred at the start time.

Copyright 2013 FunctionBay, Inc. All rights reserved

User and training documentation from FunctionBay, Inc. is subjected to the copyright laws of the

Republic of Korea and other countries and is provided under a license agreement that restricts

copying, disclosure, and use of such documentation. FunctionBay, Inc. hereby grants to the licensed

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only for internal/personal use and in accordance with the license agreement under which the

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and any other proprietary notice provided by FunctionBay, Inc. This documentation may not be

disclosed, transferred, modified, or reduced to any form, including electronic media, or transmitted or

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Information described herein is furnished for general information only, is subjected to change without

notice, and should not be construed as a warranty or commitment by FunctionBay, Inc. FunctionBay,

Inc. assumes no responsibility or liability for any errors or inaccuracies that may appear in this

document.

The software described in this document is provided under written license agreement, contains

valuable trade secrets and proprietary information, and is protected by the copyright laws of the

Republic of Korea and other countries. UNAUTHORIZED USE OF SOFTWARE OR ITS DOCUMENTATION

CAN RESULT IN CIVIL DAMAGES AND CRIMINAL PROSECUTION.

Registered Trademarks of FunctionBay, Inc. or Subsidiary

RecurDyn is a registered trademark of FunctionBay, Inc.

RecurDyn/Professional, RecurDyn/ Modeler,

RecurDyn/Solver,RecurDyn/ProcessNet,RecurDyn/AutoDesign,

RecurDyn/CoLink,RecurDyn/ChScript,RecurDyn/FFlex, RecurDyn/Mesher,RecurDyn/RFlex,

RecurDyn/Linear,RecurDyn/CATIA Read

&Write,RecurDyn/EHD(Steyr),RecurDyn/ECFD_EHD,RecurDyn/Control, RecurDyn/Hydraulic,

RecurDyn/MeshInterface, RecurDyn/Bearing,RecurDyn/Driver,RecurDyn/Spring, RecurDyn/Tire,

RecurDyn/Belt,RecurDyn/Chain,

RecurDyn/Crank,RecurDyn/Engine,RecurDyn/Gear,RecurDyn/HAT,RecurDyn/MTT2D,

RecurDyn/MTT3D,RecurDyn/Piston,RecurDyn/Track_HM, RecurDyn/Track_LM, RecurDyn/TimingChain,

RecurDyn/Valve are trademarks of FunctionBay, Inc.

Third-Party Trademarks Windows and Windows XP are registered trademarks of Microsoft Corporation.

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CADAM and CATIA are registered trademark of Dassault Systems.

FLEXlmis a registered trademark of

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All other brand or product names are trademarks or registered trademarks of their respective holders.

Edition Note This document describes the release information of RecurDynV8R2.

Revision History

First Revision, August 2013

Second Revision, October 2013

© 2013 FunctionBay, Inc. All rights reserved. This software and related documentation are property of FunctionBay, Inc. 5F, Pangyo Seven Venture Valley 1danji 2dong, 625,Sampyeong-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, KOREA 463-400 TEL : 82-31-622-3700 Fax : 82-31-622-3704