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