Tutorial 2Finite Element AnalysisUsing Pro-E and ANSYS

In this section we will attempt to perform a FEA (Finite Element Analysis)on a shaft. Before that, I created a shaft using Pro-E.Create the shaft as shown.

Figure 1

Adding the coordinate system:

_PART >> Feature > Create > Datum > Coord Sys > Default

Adding points to the model:

The purpose of adding point to the model is for force and moment placementlater on.

Adding to center

_ FEAT >> Create > Datum > Point > At center >

√√↵

edgecircular select the

Select Query > Accept > Done Sel (PNT 0)

Adding another on the surface

_ DTM PNT MODE >> Add New > Three Srf > Pick >

√√↵

intersect point to want the

you wheresurface 3pick > Done (PNT 1)

In my case: - I select DTM2, DTM3 and the Circular Edge (end of the shaft)

Figure 2

Creating material properties:

_ PART >> Set Up > Material > Define > (enter filename: FEA) >

(Vi editor appear)

If you are familiar with Vi editor then start enter the properties of the partotherwise save it to file, quit and use other editor to edit the file.

Type (shift : w and filename.mat) to saveIn my case, I Type (: w Part.mat) to save

Type (shift : and q!) to quit.

In UNIX, use other editor to edit the file that you save.You need to enter the first 4 line of information: Young Modulus, PoissonRatio, Shear Modulus and the Weight Density.

Applying load to the part:

_PART >> FEM > Define Model > Load / BC > Add > (enter

name: FEM)

Applying Force to the part:

_ STRUCTURAL >> Force | Uniform | Constraint | Select | Pick >

(select PNT 1) > Done Sel

_ CSYS SELECT >> Select | Cartesian > Pick > (Select CS 0) >

√√↵

550 :force

component Xenter > √√↵

0 :force

component Yenter >

√√↵

0 :force

component enter Z

> Done Sel > Yes

You will see and arrow pointing down toward the CS 0.If the arrow is in the wrong direction, reselect PNT 1 redo the whole processand this time set the force to Ð100.

Figure 3.

Applying moment:

_ STRUCTURAL >> Moment | Uniform | Constant | Select | Query

Select > (Select PNT O) > Accept > Pick > (Select CS 0) >

√√↵

0 :moment

component Xenter > √√↵

30 :moment

component Yenter >

√√↵

0 :moment

component enter Z > Done Sel

When applying the moment, use the right hand rule method. The thumbrepresent the magnitude for the moment in Pro-E.

Figure 4.

Also there are other way applying the moment to the shaft. You have toconvert the moment to force and apply as a force as shown below.

In my case, I apply a force in PNT 1 in the x-direction and applyanotherforce of the same magnitude but opposite x-direction on PNT 0.

Figure 5

Applying a pressure

_ STRUCTURAL >> Pressure | Uniform | Constraint | Select | Pick

> Query Select > √√↵

tshaf theof edge

circular select the > Accept

> √√↵

select

otherwise Confirm To

NEXT> Done Sel > (Enter Pressure).

Figure 6

Grounding the part

Go to the other end of the shaft, in this section we are we are going toground the shaft.

_ STRUCTURAL >> Displacement | Uniform | Constraint |

Immovable | Select | Single | Query Select (Select the circular

edge) > Accept > Done Sel

Figure 7

Assigning material to part:

_ PART >> FEM > Define Model > Materials > Whole Part | Assign

| From File > √√√

↵

matPart

mat

.:

extension with

filenameenter

Meshing Control:

_ FEM >> Define Model > Mesh Control > Global Max | Constraint

> √√↵

060. : (max) size

meshingEnter > Done / Return

Meshing:

_FEM >> Make Model > Tet Mesh > Yes

Output of Meshing:

_FEM >> Output Model > √√↵

ANSYS togo

:solverUnder > (enter filename) >OK

In our situation, we create the meshing in PRO-E and perform the FEA inANSYS program.

Before using ANSYS program, you must quit PRO-E.

Using ANSYS to solve the Finite Element Analysis:

XANSYS53 MENU >> Run Interactive Now

ANSYS / UNIVERSITY UTILITY MENU >> Read Input From >

√√↵

ans.* : E-Proon earlier

saveyou that filenameSelect > OK

ANSYS / UNIVERSITY UTILITY MENU >> Plot > Element

ANSYS / UNIVERSITY UTILITY MENU >> PlotCtrls > Pan,

Zoom and RotateÉ.

Align the part for better viewing using the Pan, Zoom and Rotate menu.

ANSYS MAIN MENU >> Solution > Run FORTRAN

ANSYS MAIN MENU >> General PsotProc > Plot results > Element

SoluÉ

In the menu, select stress and Von Mises and hit OK.

Figure 8

To Print the Result:

ANSYS / UNIVERSITY UTILITY MENU >> PlotCtrls > Capture Image

Under the image menu, go to

File >> Print

Menu shown below will appear:

Type in the command for printing and filename for saving and then hit OK.

Figure 9