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7/31/2019 Ansys 2d Tutorial Revised 2011
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ANSYS: 2-D Bridge Tutorial
Tutorial for 2-D
Bridge Design &Analysis Using
ANSYS
ENGR 190
Purdue University Calumet
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15 Ib24
in.
16
in.
4 in.
"Node"
"Elemen
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ANSYS: 2-D Bridge Tutorial
Ansys Window
This is the main window for the Ansys software. The Ansys main menu contains many
tools to help us with our design. The most important sub menus for our design are
1. Ansys Main Menu
Preprocessor
This menu has all the tools to help us build the bridge geometry, and set the
bridge parameters, such as material properties, cross-sectional area, etc.
Solution
Defines the loads and the anchor points for the bridge. When Design is
finished, the solve button in the menu gives us the solution to our analysis
design.
General Postproc
This is the menu to view the results of the analysis.
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1.
2.
3.
4.
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Part I: Design
To change the background color:
Utility menu: PlotCtrls Style Colors Reverse Video
Define the element type and material properties:
Main menu: Preprocessor Element type Add/Edit/Delete
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Assign the cross-sectional area of the truss members:
Main menu: Preprocessor Real Constants Add/Edit/Delete
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Close the Define Material Model Behavior window.
Save the input data:
ANSYS Toolbar: SAVE_DB
Main menu: Preprocessor Modeling Create Nodes On Working Plane
On the workplane, apply the joints (nodes):
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(0,0) Click Apply
(4,0) Click Apply
(8,0) Click Apply
(12,0) Click Apply
(16,0) Click Apply
(20,0) Click Apply
(24,0) Click Apply
(4,4) Click Apply
(8,4) Click Apply
(12,4) Click Apply
(16,4) Click Apply
(20,4) Click OK
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Turn on the node numbering:
Utility menu: PlotCtrls Numbering
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You may want to list nodes at this point in order to check your work:
Utility menu: List Nodes
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Close
ANSYS Toolbar: SAVE_DB
ELEMENTS
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Use the middle button anywhere in the ANSYS graphics window to apply
Node12 and then node 7
Use the middle button anywhere in the ANSYS graphics window to apply
Node 2 and then node 8
Use the middle button anywhere in the ANSYS graphics window to apply
Node 2 and then node 9
Use the middle button anywhere in the ANSYS graphics window to apply
Node 3 and then node 9
Use the middle button anywhere in the ANSYS graphics window to apply
Node 4 and then node 9
Use the middle button anywhere in the ANSYS graphics window to apply
Node 4 and then node 10
Use the middle button anywhere in the ANSYS graphics window to apply
Node 4 and then node 11
Use the middle button anywhere in the ANSYS graphics window to apply
Node 5 and then node 11
Use the middle button anywhere in the ANSYS graphics window to apply
Node 6 and then node 11
Use the middle button anywhere in the ANSYS graphics window to apply
Node 6 and then node 12
Use the middle button anywhere in the ANSYS graphics window to apply
Click OK
Utility menu:PlotCtrls Numbering
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This will turn the numbering on the elements on. Allowing us to recognize which
member has what force when we get the results back from our analysis.
ANSYS Toolbar: SAVE_DB
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Part II: Analysis
Apply boundary conditions and loads:
Main menu: Solution Define Loads Apply Structural Displacement On
Nodes
Click on node 1 and 7
Click Apply
Main menu: Solution Define Loads Apply Structural Force/Moment On Nodes
Click on node 4
Click Apply
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Click OK
ANSYS Toolbar: SAVE_DB
Solve the problem:
Main menu: Solution Solve Current LS
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For the postprocessing phase, first plot the deformed shape:
Main menu: General Plot Results Deformed Shape
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To see the animation:
Utility menu: PlotCtrls Animate Deformed Results
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Main menu: General Postpoc List Results Nodal Solution
Close
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To review other results, such as axial forces, we must copy these results into element
tables. These items are obtained using item label and sequence numbers. For truss
elements, the values of internal forces, which ANSYS computes from the nodal
displacement results, may be looked up and assigned to user-defined labels.
Main menu: General Postpoc Element Table Define Table
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Main menu: General Postpoc Element Table List Element Table
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Note: Negative (+) Tension
Positive (-) Compression
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Element # Force (Ib)Tension orCompressio
nLength (in) Size (in)
1
2
34
5
6
7
8
9
10
11
12
1314
15
16
17
18
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20
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Close
Exit ANSYS and save everything, including element tables and reaction forces:
ANSYS Toolbar: QUIT
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