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Course in ANSYS

Example0300

Example0300 2

Example – Cantilever beam

E = 210000N/mm2

n = 0.3L = 100mma = 10mmb = 10mmF = 100N

Objective:Compute the maximum deflection and locatepoint of maximum deflection Tasks:How should this be modelled?Compare results with results obtainedfrom beam theory?Topics:Element type, Real constants, modeling,Plot results, output graphics

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Example0300 3

Example - title

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

Utility Menu > File > Change Jobname/jobname, Example0300

Enter: Cantilever beam

Command line entryGUI

Enter: Example0300

Example0300 4

Example - AreasPreprocessor > Modeling > Create > Areas > Rectangle > By DimensionsCreate an area given by X=(0,100) and Y=(0,10)

Enter 0 orleave empty

Enter 100

Enter 10Enter 0 orleave empty

Note: Keypoints (4 kp’s) and lines(4 lines) are automatically generated(also numbered automatically)

Press OK

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Example0300 5

Example - Area

Example0300 6

Example - OperatePreprocessor > Modeling > Operate > Extrude > Areas > Along NormalCreate a volume by extruding the area 10 along its surface normal vector

Note: Bottom left corner of ANSYS GUI

Press OK Enter 10

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Example0300 7

Example – Mouse rotate

Rotate by holding the Ctrl key down while using the right hand mouse button

Example0300 8

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

Press Add

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Example0300 9

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

Press Options

Press Help to learn more about theelement.

Example0300 10

Example – Real ConstantsNo Real Constants are necessary for pure 3D solid models!

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Example0300 11

Example - Material PropertiesPreprocessor > Material Props > Material Models

Double Clickto step in thematerial tree

Example0300 12

Example - Material PropertiesPreprocessor > Material Props > Material Models

Enter:Modulus of elasticity

Enter:Poisson’s ratio

Click hereto Close

Press OK

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Example0300 13

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

Select/PickLines tospecifymesh sizefor

Press OK when finish with selection

Select the indicated lines

Example0300 14

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

Press OK when finish with selectionEnter 2

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Example0300 15

Example - MeshingPreprocessor > Meshing > Mesh > Volumes > Mapped > 4 or 6 sided

Select individual volumes to be meshed

Select all volumes defined to be meshed

NB: It is often necessary to “Clear” the model forexample if Element Type or model geometry is to be changed

Example0300 16

Example – 3D Mesh

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Example0300 17

Example – Analysis Type

Solution > Analysis Type > New Analysis

File > Write DB log fileEnter “example0300.lgw”

Example0300 18

Example – Define LoadsSolution > Define Loads > Apply > Structural > Displacement > On Areas

Select Area A6 or the left end area

Press OK

Select All DOF to fix/clamp the beam

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Example0300 19

Example – Define LoadsSolution > Define Loads > Apply > Structural > Force/Moment > On Nodes

Select indicated element node

Press OK

Note: If the model is remeshed all loads will be deleted with the element nodes

Example0300 20

Example – Define LoadsSolution > Define Loads > Apply > Structural > Force/Moment > On Nodes

Change to FY

Enter -100Press OK to finish

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Example0300 21

Example - Save

Display of Analysis model

Save the model

Example0300 22

Example - SolveSolution > Solve > Current LS

Press OK

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Example0300 23

Example - SolvePress Close

Press hereto Close

Example0300 24

Example - PostProcessingGeneral Postproc > Plot Results > Deformed Shape

Select “Def+undeformed”and Press OK

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Example0300 25

Example - PostProcessing

Read Maximum displacement: DMX

Example0300 26

Example – Comments/Questions

• What did change compared to the Beam model?

• The “example0300.lgw” can be edited in “Notepad”

• What are the assumptions in this case?• Will the shape or the number of elements

affect the solution?

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Example0300 27

File menu

Clears (zeros out) the database stored in memory. Clearing the database has the same effect as leaving and reentering the ANSYS program, but does not require you to exit.

You can include commands to be executed when the program starts up in the start71.ans file.