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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2

15 Ib24

in.

16

in.

4 in.

"Node"

"Elemen


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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


ELEMENTS

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Use the middle button anywhere in the ANSYS graphics window to apply

Node12 and then node 7


Node 2 and then node 8


















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.


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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


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

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1314

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Close

Exit ANSYS and save everything, including element tables and reaction forces:

ANSYS Toolbar: QUIT

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Documents

Ansys 2d Tutorial Revised 2011