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ANSYS Sample 2-D Problem No.1 Rev. 11/17/05
Preparation
Make a sketch of the structure
Choose your global reference frame
Calculate the coordinates of keypointsLook up material
properties, thickness.
Create a directory for your ANSYS files
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ANSYS Setup
Login and execute ANSYS from the START Menu / CAD Programs/
Ansys 9.0/ Ansys
Change your jobname, title, default directory
Switch Output to jobname.out [ ] Append box.
Set Preferences - Structural, h-code Select Units
BIN________________________________________________________________________________________________________________
Create ModelDefine Model Elements
>Preprocessor
>Element Type >Add/Edit/Delete
[Add] (Solid, Quad 8 node 82)
[Options] (Plane stress w/ thickness)
>Real Constants[Add] THK (0.5)
>Material Properties (enter or select from
library)>Material Library >Select Units> BIN
>Material Model >Structural >Linear >Elastic
>Isotropic
EX (3e7)
PRXY (0.28)
[Save_db]
Create Rectangle (5x2 = quarter section of a flat tension
member)
>Modeling >Create >Areas >Rectangle >By
DimensionsX1, X2 ( 0, 6 ) (horiz range)
Y1, Y2 ( 0, 2 ) (vert range)
[PlotCtrls] >Numbering >Area numbers (On)
[PlotCtrls] >Pan, Zoom, Rotate > [ ] (Zoom Out)
Create Circle (2 Diam at the origin)
>Modeling >Create >Areas >Circle >Solid
CirclePick circle center point: (Click inside window. Hold button
down)Move arrow until: WPX = 0, WPY = 0
Click at center, drag until: Radius = 1.0
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Subtract Holes Boolean Operation
>Modeling > Operate >Boolean >Subtract >
Areas
Pick: base area : (rectangle ) [Apply]
Pick: hole: (remaining area is drawn automatically)
[File] > Save as: hole1.db
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Mesh Model
Automatic Mesh Generation
>Preprocessor
>Meshing >Size Controls > Manual Size >Global
>Size
SIZE (0.5)
>Meshing >Mesh > Areas >FreePick rectangle area:
Re-do Mesh
>Meshing > ClearPick area (rectangle)
[Plot] > Areas( Try different mesh size, etc)
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Solution
Apply Boundary Constraints
>Solution
[Plot] > Lines
>Define Loads > Apply >Structural >Displacement
>On LinesPick left side of rectangle DOFs constrained:
UXDisplacement Value: 0
>Define Loads > Apply >Structural >Displacement
>On LinesPick bottom side of rectangle DOFs constrained:
UYDisplacement Value: 0
Apply Loads
>Solution
>Define Loads > Apply > Structural > Pressure >
On LinesRight side of rectangle:
Pick line on right side [Apply] (Uniform pressure
distribution)
ValueI: (-100) [Apply] (Neg pressure acts away from the
surface)
[Save_db]
Solve Current Load Set
>Solution
>Solve >Current LS (Note: Complete results are stored in
results file: jobname.rst )
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View Results
Deformed Shape
>General Postprocessor
>Plot Results >Deformed Shape(Select Deformed and
Undeformed Shape)
[PlotCtrls] > Style > Displacement Scaling > (Rescale
plot)
User Specified (400)
Replot
Stress Contours
>Plot Results >Contour Plot >Nodal Solution
Select: (Stress) Scroll to: ( von Mises)Scale Factor:
(blank)
(Def shape only)
Interpolation Nodes: (Corners only)
Eff Nu (0)
Element Plot
[PlotCtrls] > Numbering >
Elem / Attrib (Element Numbers)
Numbers shown with (Colors only)
Replot
Plot Input Data
Meshed model with node numbers
Line model with loads and constraints
List Results Tables
>General Postprocessor
>List Results > Nodal Solution, Element Solution, and
Reaction Solution
(All items )
List input data
[List] Nodal coordinates, elements, properties, real constants,
loads, constraints
[File] >Print
or...[File] >Save as: (send to file: jobname.out)
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Select "All DOF" (display table of results)
[File] >Print lp -d CB230ps
or...[File] >Copy to Output File (send to file:
jobname.out)
>Plot Element Solution
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Other ANSYS Features
Dependent Constraints
>Preprocessor
>Couple / ceqn>Constraint Eqn
0 = -1*4Y + 0.2*4X Angled constraint: at node 4, displ in Y dir.
equals
0.2* displ in X dir. (i.e. positive slope)
0 = -1*4X + 1*3X Pin joint: coincident nodes 3 and 4 move
together in the
0 = -1*4Y + 1*3Y X and Y dir, but rotate independently
Screen Capture
[PlotCtrls] >Hard Copy
Send to default printer: lp -d CB230ps
Print a Table or a Help File[File] >Print (Use File option in
the table window)
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ANSYS Help and File Management
Help
Help - Table of Contents - Workbook Sample Problems
Help - Table of Contents - Procedures Manual
Sec. 2.4 Typical ANSYS Analysis
Sec. 11.2 General Postprocessor
Sec. 12.5 Creating Graphs
App. A File Management
Help plane82 (description of 8 node quad elements)
Files
Look in your ANSYS directory.
jobname.db Database file - your ANSYS input data
jobname.dbb Backup of database file - created when you do a
Save-dbjobname.emat Element matrices
jobname.err Error/warning log
jobname.esav Saved element data
jobname.log Command history - complete record of commands used
in a session
jobname.out ANSYS Output file
jobname.rst ANSYS Results file
