ansys example0120 .pdf

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Course in ANSYS
Example0120

ANSYS
Computational Mechanics, AAU, Esbjerg

Example – Cantilever beam

Objective:
Compute the maximum deflection
Tasks:
Create a table and compare results with results
obtained from beam theory?
Display the deflection figure?
Topics:
Topics: Start of analysis, Element type, Real constants,
Material, modeling, element size for beam models,
saving/restoring
ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

E = 210000N/mm2
n = 0.3
L = 5000mm
a = 250mm
b = 450mm
c = 10mm
d = 20mm
e = 15mm
f = 350mm
F = 100N
2

Example - title
Utility Menu > File > Change Jobname
/jobname, Example0120

GUI
Command line entry
Enter: Example0120

Utility Menu > File > Change Title
/title, Cantilever beam

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

Enter: Cantilever beam

3

Example - Keypoints

Note: An empty #
result in automatic
numbering.

Preprocessor > Modeling > Create > Keypoints > In Active CS
/PREP7
# Keypoint number
General
format:
K,,,,
X Keypoint x-coordinate
K,#,X,Y,Z
Y Keypoint y-coordinate
K,,5000,,
Z Keypoint z-coordinate
K,,,50,
Enter 0,0,0 and
Press Apply
Enter 5000,0,0 and
Press Apply
Enter 0,50,0 and
Press Apply

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

Note: An empty box
result in a zero. It is
allowed to enter 0.0
in each box.
4

Example - Numbering
Utility Menu > PlotCtrls > Numbering

Switch on Keypoint numbers

Press OK
ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

5

Example - Lines
Preprocessor > Modeling > Create > Lines > Lines > Straight Line
Create a line between Keypoint 1 and Keypoint 2.
L,1,2
HINT: By clicking with the righthand mouse button you shift
between the Pick/Unpick
function. This is indicated by
the direction of the cursor
arrow:
Pick: upward arrow
Unpick: downward arrow
Press OK or Cancel
to finish selection

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

6

Example – Element Type
Preprocessor > Element Type > Add/Edit/Delete

Press Add

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

7

Example - Element Type
Preprocessor > Element Type > Add/Edit/Delete

Press Options

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

8

Example - Element Type
Preprocessor > Element Type > Add/Edit/Delete

Press Help to learn more about the
element.

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

9

Example - Material Properties
Preprocessor > Material Props > Material Models

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

Double Click
to step in the
material tree

10

Example - Material Properties
Preprocessor > Material Props > Material Models
Enter:
Modulus of elasticity

Click here
to Close

Enter:
Poisson’s ratio

Press OK

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

11

Example - Section
Enter i253
Select the I profile

Follow the
guidelines at Enter
the appropiate
cross-sectional
data

Press OK to finish
ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

12

Example – Line Attributes
Preprocessor > Meshing > Mesh Attributes > Picked Lines
Select section I253

Change to Yes

Select KP3
Press OK to finish
ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

13

Example - Meshing
Preprocessor > Meshing > Size Cntrls > ManualSize > Lines > Picked Lines

Select/Pick
Lines to
specify
mesh size
for

Press OK when finish with selection
ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

Enter 5
14

Example - Meshing
Preprocessor > Meshing > Mesh > Lines

Select individual lines to be meshed by Picking

NB: It is often necessary to “Clear” the model for
example if Element Type is to be changed

Select all lines defined to be meshed

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

15

Example - PlotCtrls Menu

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

Change to On

16

Example – Display of Element

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

17

Example – Analysis Type
File > Write DB log file
Enter “example0120.lgw”

Solution > Analysis Type > New Analysis

Press OK

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

18

Example – Define Loads
Solution > Define Loads > Apply > Structural > Displacement > On Keypoints
Select keypoint 1
Select All DOF to fix/clamp the beam

Press OK
ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

19

Example – Define Loads
Solution > Define Loads > Apply > Structural > Force/Moment > On Keypoints
Select keypoint 2

Change to FY

Press OK to finish
ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

Enter -100
20

Example - Save
Display of Analysis model

Save the model

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

21

Example - Solve
Solution > Solve > Current LS

Press OK

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

22

Example - PostProcessing
General Postproc > Plot Results > Deformed Shape

Select “Def+undeformed”
and Press OK

ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

23

Example - PostProcessing

Read Maximum displacement: DMX
ANSYS
Computational Mechanics, AAU, Esbjerg

Example0120

24



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