• To ensure all created files in the same

directory/folder as the icon, change “Start in” in

icon properties to %currdir%

• Copy the icon to the folder you create for the

ABAQUS analysis

• Go thru two tutorial problems

• Find Tutorial problems in the Help manual

ABAQUS Initiation

%currdir%

• Icons to ‘Translate’, ‘Rotate’,

‘Zoom’, ‘Box Zoom’, and ‘Fit’

Model Tree

• Convenient for modeling

• Record modeling status

• Quick to switch to appropriate

item for modifying model

• Move mouse to any item and

right click the mouse for

options

Modules:

Part: Sketch two- or 3-dimensional profiles and create a part to be

assembled into a model

Property: Define material properties and section properties for model

Assembly: Assemble the model and create sets

Step: Configure analysis procedure and request output

Load: Apply loads and boundary conditions to structure

Mesh: Mesh the model

Job: Create analysis job and submit for solution

Visualization: View the results of analysis

ABAQUS Modeling and Analysis

Icons

changed

according

to Module

Actions need user’s input

• Messages and instructions displayed

• Actions needed from user

• Click any other option/icon or press Esc

key to interrupt or alter the action

Message Area

Tutorial 1: a Solid Beam is subjected to pressure on top surface

Steps:

• Generate Part Geometry

• Input Materials

• Assign Section Properties

• Create Assembly

• Apply Loads (Pressure)

• Apply Boundary Conditions

• Mesh the Model

• Create Analysis Job

• Create Part 200X20 (3D/Deformable/Solid/Extrusion), extrude by 25 > Action is

waiting for Instruction at the bottom of model window

• Change/edit the Part in Features

• Create Materials (for entire model): Steel (E=209E3, v=.3) for entire model (all

parts)

• Learn how to edit/change materials

• Create Section: beam > create new materials if needed

• Learn Delete, Suppress, Rename, Resume,

• Go to Part to assign Sections

• Create Instances (selection of Parts) in Assembly (add another beam)

• Apply Boundary Conditions and Loads to Assembly

• Create Step after Initial

• Create Load: Pressure (all units have to be consistent)

• Assign Surface (all Nodes on Surface will be assigned)

• Create BC: Select Type & Assign Surface

Steps and Notices for modeling

(additional details, please see

ABAQUS CAE Tutorials)

• Meshing

• Assign Element Type: Incompatible Mode

• Assign Mesh Control; Structure, Sweep, Free

• Seed Part (10); Edge by Size, by Number, Biased; Delete

Seed; Change Seed

• Create Job

• Submit, Write Input, Data Check, Monitor

• Results Visualization

• Display Stress: von Mises, S11, S22, S12, etc.

• Display Displacements: Amplify

• Display Symbol Variables

• Display Cutting Plane

Fixed ends

P = 1000N

R=5 mm

L=200 mm

Steel (E=209E3, v=.3)

Steps:

• Generate Part Geometry

• Input Materials

• Assign Section Properties

• Create Assembly

• Apply Loads

• Apply Boundary Conditions

• Mesh the Model

• Create Analysis Job

Create an assembly composed of a hinge

held together by a pin

Lub. Hole

• ABAQUS Help Manual

• Creating a cube

• Adding the flange

• Modifying for the lub. hole

ABAQUS Modeling and Analysis Examples

(Tutorial 2)

Hinge-Hole Model

• Create a 0.04X0.04X0.04 cube (Approximate size =0.2)

• Create & add a flange: Shape > Solid > Extrude

• Create .02 line; constrain the other by equal length

• Create half a circle (3 points) and tangent the edges

• Create a circle approximately (r=.01) (approximate centered, dimension

center to a edge point as .01(Horiz) & 0.0(Vert)

• Dimension vertical distance between circle center and edge to zero

• Edit Extrusion “Blind”, “.02”, and “Flip”

• Edit “Features” in Part

• “Edit Section Sketch” in Solid extrude-2 for r=.012: select the “edit dimension

value” icon

• Edit, exit and click OK

• Click Apply in Edit box

• Generate lub. Hole

• Creating a datum point (Edit Parameter > select edge > .25)

• Creating a datum axis (2 points > center & Datum point)

• Creating a datum plane (Point & Normal)

• Creating a datum point on the other side (Edit Parameter >

select edge > .75)

• Creating a datum point (Midway between 2 points)

Creating lub. Hole

• Shape > Cut > Extrude: r=.003

• Edit Cut Extrusion: Up to Face

• Select the inner Face

• Open Example2-Geo-only.cae

• Define Material Properties: Steel (E=209E9, v=0.3)

• Define Section Properties: Solid

• Assign a Section

• Copy Hinge-hole to Hinge-solid in Parts

• Remove hole in Feature

• Create Rigid Pin

• Create Parts > Analytical Rigid > Revolved Shell > Approximate size (.2)

• Create a line to the right of axis> Dimension .012 for distance between line & center> Dimension .06

for line length >Done

• Assign RP to ring

• Create Instances > Auto Offset

• Constraint Instances > Face to Face > arrows point the same direction after constraint (clearance 0.04) (see

instruction for fixed & movable instances)

FE Modeling of Example 2

• Constraint > Coaxial > arrows point the same direction after constraint

• Constraint > Edge to Edge > arrows point the same direction after

constraint

• Constraint > Coaxial for Rigid Pin

• Instance > Translate “Rigid Pin” by (0,0,.02) > click OK

• Instance > Convert Constraints > Done

• Create Analysis Step

• Initial step .1

• Max step size .25

• Request Output

• Introduce the concept of contact surface & 3 contact pairs

• Create Interaction Properties > Frictionless

• Interactions > Define Contact Pairs > Name/Rename contact pairs

• Select Contact Pairs > select Master Surface (Brown or Pink) & slave

surface > “Surf-Surf” or “Node-Surf”; interaction property; Adjust for

overclosure

• Define Boundary Conditions

• Fixed one surface

• No Slip > constrain all DOF on RP in “Initial” > release U1 & UR2

DOF in “Step-1”

• Constrain > constrain 1 thru 3 DOF on a point in “Initial” > release

U1 DOF in “Step-1”

• Define Loads

• In Step-1

• Apply pressure of -1E6 on the Hinge-solid surface

• Meshing

• Only the Hinge-hole and Hinge-solid to be meshed in Part

• Go to Parts

• Partition Parts for Meshing: only yellow or green part can be

modeled by Hex elements

• Partition Cell for both hinges (student do one) > Extend

face; then Defining Cutting Plane > Point & Normal or 3

points

• Mesh each Part > assign element type > assign mesh

controls > seed part (Seed size 0.004) > mesh > verify

mesh

• Check the mesh in Assembly

• Turn off Datum point, axis, plane…

• Turn off unwanted Instances

• Create Job

• Submit Analysis

• Monitor the progress

• View Results

• Turn on/off instances to see results

on each one

• Select only elements you want to

see

• Select elements to be moved from

visualization

• See contact pressure, opening,

shear force

• .cae and .odb are independent, No .odb

can be changed

Contact

Opening

Contact

Pressure

Contact

Opening Contact

Opening

Hole

Hole Hole

Solid

Part

Modeling: 3D Deformable, Shell

Dimension: 30X30X0.2

Partition into 4 squares

Structured Mesh w/ seed =1.0 (All Quad)

Materials

Elastic: E=20000, v =0.3

Boundary conditions: Fixed all around

Loads: Concentrated at the center of plate

P = -20

Analysis of Plate-Bending

Model

P=-20

A simple rectangular plate is subjected to

a concentrated force at the center of the

plate. Please solve the problem with linear

and nonlinear analyses.

Part:

1. 3D, Deformable, Shell, Planar

2. Partition Surface (Equally divided the square plate)

3. Materials (Elastic; Plastic)

4. Section (Shell, Homogeneous, thickness = 0.2)

5. Assign Section Property

6. Mesh with Quad (Green)

7. Mesh Seed = 1

8. BC (fixed all around)

9. Loads

10.Create Job “elastic” then plastic

11. Submit for analysis

Modeling

Materials;

Elastic: E=20000, v =0.3

Plastic:

Boundary conditions: Fixed all around

Loads: Concentrated at the center of plate

P = -20

Job Step:

Initial:0.05

Max Incre:0.1

Yield Stress Plastic Strain

340 0

350 0.001

360 0.01

380 0.1

Plate-Yielding: Materials input for elasto-plastic

nonlinear analysis

Different Analysis Cases:

1. Elastic analysis with Nlgeom=off and Step incr=1.0

2. Elastic analysis with Nlgeom=on, Step incr=1.0

3. Elastic analysis with Nlgeom=on, Initial step=0.05 and Max step

incr= 0.1

4. Elasto-Plastic analysis with Nlgeom=on, Initial step=0.05 and

Max step incr= 0.1

Needs for Large Deformation Nonlinear Analysis

(Even Elastic)

Elastic Plate-Bending Results

Total Max Principal Strain (Max .0332)

Von Mises Stress (Max 857.0) Displacement Magnitude (Max 6.90)

Elasto-Plastic Plate-Bending Results

Total Max Principal Strain (Max .0144) Max Principal Plastic Strain (Max 3.69E-4)

Von Mises Stress (Max 345.8) Displacement Magnitude (Max 0.927)