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7/24/2019 Ansys Exemple 01 Plaque
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Course in ANSYS
Example0702
Computational Mechanics, AAU, EsbjergAutoDesk Inventor
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Syllabus 2Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example Plate with a hole
E = 210000N/mm2
= 0.3
a = 200mm
b = 100mm
t = 10mm
r = 10mm
s = 100N/mm2
Objective:Determine the maximum stress in the x-direction forpoint A and display the deformation figureTasks:
Create a submodel to increase the accuracy of the FEAwithout increasing the computational effort significantly?
Topics:
Element type, Real constants, modeling, mapped mesh,
plot results, output graphics, path operations,submodeling
A
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Steps in Submodeling
The process for using submodeling is as
follows:Create and analyze the coarse model.Create and analyze the coarse model.
Create the submodel. Perform cut boundary interpolation (CBI).
Analyze the submodel.
Verify that the distance between the cut
boundaries and the stress concentration is
adequate.Syllabus 3
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Example - title
Utili ty Menu > File > Change Jobname
/jobname, Example0702_coarse Command line entryGUI
Enter: Example0702_coarse
Utili ty Menu > File > Change Title
/title, Plate with a holeEnter: Plate with a hole
Syllabus 4Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example Areas RectanglePreprocessor > Modeling > Create > Areas > Rectangle > By Dimensions
Create an area given by X=(0,100) and Y=(0,50)
Enter 0 or
leave empty
Syllabus 5Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Enter 100
Enter 50Enter 0 or
leave emptyPress OK
Note: Keypoints (4 kps) and lines
(4 lines) are automatically generated
(also numbered automatically)
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Example Areas Rectangle
Syllabus 6Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example Areas CirclePreprocessor > Modeling > Create > Areas > Circle > Solid Circle
Create an area given by (X,Y)=(0, 0) and Radius=10
Syllabus 7Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Enter 10
Press OK
Note: Keypoints (4 kps) and lines
(4 lines) are automatically generated(also numbered automatically)
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Example - Area
Syllabus 8Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Syllabus 9Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - OperatePreprocessor > Modeling > Operate > Booleans > Subtract > AreasCreate the final area by subtracting the circular area from the rectangular area
Note: Bottom left corner of ANSYS GUI
Press OK
Select the rectangular area and press OK
Note: Bottom left corner of ANSYS GUI
Select the circular area
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Example Areas
Syllabus 10Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example - Numbering
Syllabus 11Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Switch on Keypoint, Line, and Area Numbers
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Example - List Menu
List Keypoint, Lines, and Areas
Syllabus 12Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example - Plot Menu
Plot Keypoint, Lines, and Areas
Syllabus 13Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example Element TypePreprocessor > Element Type > Add/Edit/Delete
Press Add
Syllabus 14Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example - Element TypePreprocessor > Element Type > Add/Edit/Delete
Syllabus 15Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Press Options
Press Help to learn more about theelement.
Select Plane strs w/thk
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Example Real ConstantsPreprocessor > Real Constants > Add
Place the cursor
on the relevantelement and
press OK
Syllabus 16Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example - Real ConstantsPreprocessor > Real Constants > Add
Press OK
Press Close
to finish
Enter 10
Syllabus 17Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example - Material PropertiesPreprocessor > Material Props > Material Models
Double Click
to step in the
material tree
Syllabus 18Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example - Material Properties
Syllabus 19Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Preprocessor > Material Props > Material ModelsEnter 210000
Modulus of elasticity
Enter 0.3
Poissons ratio
Click here
to Close
Press OK
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Example - MeshingPreprocessor > Meshing > Size Cntrls > ManualSize > Lines > Picked Lines
Syllabus 20Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Select/Pick
Lines tospecify
mesh size
for
Pick the two
longest lines
Press OK when finish with selection
See next page
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Example Mesh Size
3 Element subdivisions
5 Element subdivisions
6 Element subdivisions
Syllabus 21Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example Concatenate Lines
Syllabus 22Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Select L2 and L3 to create
a topologically four sided
geometryPress OK
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Example - MeshingPreprocessor > Meshing > Mesh > Areas > Mapped > 3 or 4 sided
Syllabus 23Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Select individual areas
to be meshed
Select all areas defined
to be meshed
NB: It is often
necessary to Clear
the model forexample if Element
Type or model
geometry is to be
changed
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Example Mapped Mesh
Syllabus 24Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example Analysis Type
Solution > Analysis Type > New Analysis
File > Write DB log file
Enter example0702_coarse.lgw
Syllabus 25Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example Define LoadsSolution > Define Loads > Apply > Structural > Displacement > On Lines
Select UY to fix the plate in the y-direction
Select the
bottom straight
line
Press OK
Syllabus 26Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example Define LoadsSolution > Define Loads > Apply > Structural > Displacement > On Lines
Select UX to fix the plate in the x-direction
Select the left
straight line
Press OK
Syllabus 27Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example Define LoadsSolution > Define Loads > Apply > Structural > Pressure > On l ines
Select theright
straight line
Enter -100
Press OK
to finish
Syllabus 28Computational Mechanics, AAU, Esbjerg
AutoDesk InventorNote: Pressure acts normal and
inward to a surface
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Example - Save
Display of Analysis model
Save the model
Syllabus 29Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example - SolveSolution > Solve > Current LS
Syllabus 30Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Press OK
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Example - SolvePress Close
Press here
to Close
Syllabus 31Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example Contour PlotGeneral Postproc > Plot Results > Contour Plot > Nodal Sol
Select Stress
Select SX for stresses inx-direction
Syllabus 32Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example Contour Plot
Syllabus 33Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example Select - Entities
See next page
for selection
Syllabus 34Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Syllabus 35Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example Select Nodes
Select the
indicated
nodes
Enter OK when finished
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Example List Results
Syllabus 36Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Select Stress, SCOMP
Press OK
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Example List Results
Syllabus 37Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
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Example - Plot - Nodes
Plot Nodes
Only 11 FE nodes are
displayed the same nodes as
selected previously
Syllabus 38Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
S
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Example Select - Entities
Select Pick All
Syllabus 39Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
E l Pl t N d
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Example - Plot - Nodes
Plot Nodes
Syllabus 40Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
E l Pl t N d
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Example - Plot - Nodes
Syllabus 41Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
E l D fi P th
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Syllabus 42Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example Define Path
See next page for selection
E l D fi P th B N d
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Example Define Path - By Nodes
Syllabus 43Computational Mechanics, AAU, Esbjerg
AutoDesk InventorEnter OK when finished
Select the
indicated
nodes
Note: the
selection
order isimportant
start from the
hole
E l D fi P th B N d
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Example Define Path - By Nodes
Enter an appropiate name, e.g. SSX
Enter OK
Syllabus 44Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
E l M t P th
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Syllabus 45Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example Map onto Path
Select Stress, SX
Press OK
Example Plot Path on Graph
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Syllabus 46Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example Plot Path on Graph
Select SX
Press OK
Example Plot Path on Graph
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Example Plot Path on Graph
Syllabus 47Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Steps in Submodeling
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Steps in Submodeling
The process for using submodeling is as
follows: Create and analyze the coarse model.
Create theCreate the submodelsubmodel..
Perform cut boundary interpolation (CBI).
Analyze the submodel.
Verify that the distance between the cutboundaries and the stress concentration is
adequate.
Syllabus 48Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example title
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Example - title
Utili ty Menu > File > Change Jobname
/jobname, Example0702_fine Command line entryGUI
Enter: Example0702_fine
Utili ty Menu > File > Change Title
/title, Plate with a holeEnter: Plate with a hole
Syllabus 49Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example Areas Rectangle
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Example Areas RectanglePreprocessor > Modeling > Create > Areas > Rectangle > By DimensionsCreate an area given by X=(0,25) and Y=(0,25)
Enter 0 or
leave empty
Syllabus 50Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Enter 25
Enter 25Enter 0 or
leave emptyPress OK
Note: Keypoints (4 kps) and lines
(4 lines) are automatically generated
(also numbered automatically)
Example Areas Rectangle
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Example Areas Rectangle
Syllabus 51Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example Areas Circle
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Example Areas CirclePreprocessor > Modeling > Create > Areas > Circle > Solid CircleCreate an area given by (X,Y)=(0, 0) and Radius=10
Syllabus 52Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Enter 10
Press OK
Note: Keypoints (4 kps) and lines
(4 lines) are automatically generated
(also numbered automatically)
Example - Area
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Example - Area
Syllabus 53Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - Operate
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Syllabus 54Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - OperatePreprocessor > Modeling > Operate > Booleans > Subtract > AreasCreate the final area by subtracting the circular area from the rectangular area
Note: Bottom left corner of ANSYS GUI
Press OK
Select the rectangular area and press OK
Note: Bottom left corner of ANSYS GUI
Select the circular area
Example Areas
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Example Areas
Syllabus 55Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - Numbering
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Example Numbering
Syllabus 56Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Switch on Keypoint, Line, and Area Numbers
Example - List Menu
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Example List Menu
List Keypoint, Lines, and Areas
Syllabus 57Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - Plot Menu
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Example Plot Menu
Plot Keypoint, Lines, and Areas
Syllabus 58Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example Element Type
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Example Element TypePreprocessor > Element Type > Add/Edit/Delete
Press Add
Syllabus 59Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - Element Type
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Example Element TypePreprocessor > Element Type > Add/Edit/Delete
Press Options
Syllabus 60Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Press Help to learn more about the
element.
Select Plane strs w/thk
Example Real Constants
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Example Real ConstantsPreprocessor > Real Constants > Add
Place the cursor
on the relevant
element andpress OK
Syllabus 61Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - Real Constants
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Example Real ConstantsPreprocessor > Real Constants > Add
Press OK
Press Closeto finish
Enter 10
Syllabus 62Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - Material Properties
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p pPreprocessor > Material Props > Material Models
Double Click
to step in the
material tree
Syllabus 63Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - Material Properties
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p p
Syllabus 64Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Preprocessor > Material Props > Material ModelsEnter 210000
Modulus of elasticity
Enter 0.3
Poissons ratio
Click here
to Close
Press OK
Example - Meshing
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p gPreprocessor > Meshing > Size Cntrls > ManualSize > Lines > Picked Lines
Syllabus 65Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Select/Pick
Lines tospecify
mesh size
for
Pick the twolongest lines
Press OK when finish with selection
See next page
Example Mesh Size
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p
6 Element subdivisions
10 Element subdivisions
12 Element subdivisions
Syllabus 66Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example Concatenate Lines
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p
Syllabus 67Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Select L2 and L3 to create
a topologically four sided
geometryPress OK
Example - Meshing
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p gPreprocessor > Meshing > Mesh > Areas > Mapped > 3 or 4 sided
Syllabus 68Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Select individual areas
to be meshed
Select all areas defined
to be meshed
NB: It is often
necessary to Clear
the model for
example if ElementType or model
geometry is to be
changed
Example Mapped Mesh
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Syllabus 69Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example Define Loads
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Solution > Define Loads > Apply > Structural > Displacement > On Lines
Select UY to fix the plate in the y-direction
Select thebottom straight
line
Press OK
Syllabus 70Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example Define Loads
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Solution > Define Loads > Apply > Structural > Displacement > On Lines
Select UX to fix the plate in the x-direction
Select the leftstraight line
Press OK
Syllabus 71Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - Submodel
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Syllabus 72Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - Steps in Submodeling
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The process for using submodeling is as
follows:
Create and analyze the coarse model.
Create the submodel.
Perform Cut Boundary Interpolation (CBI).Perform Cut Boundary Interpolation (CBI).
Analyze the submodel.
Verify that the distance between the cutboundaries and the stress concentration is
adequate.
Syllabus 73Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI Steps
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The following tasks are involved in performing
the cut boundary interpolation:1.1. Identify and write the cutIdentify and write the cut--boundary nodesboundary nodes
2. Restore the full set of nodes, write the database to
Jobname.DB
3. To do the cut boundary interpolation restore the coarsemodel
4. Enter POST1
5. Point to the coarse results file
6. Read in the desired set of data from the results file
7. Initiate cut-boundary interpolation
8. All interpolation work is now done
Syllabus 74Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 1
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Plot Nodes
Syllabus 75Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 1
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See next page
for selection
Syllabus 76Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 1
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Syllabus 77Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 1
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Plot Nodes
Syllabus 78Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 1
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Syllabus 79Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 1
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Syllabus 80Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Enter example0702_cutboundaryPress OK
Example - CBI Steps
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The following tasks are involved in performing
the cut boundary interpolation:1. Identify and write the cut-boundary nodes
2.2. Restore the full set of nodes, write the database toRestore the full set of nodes, write the database to
Jobname.DBJobname.DB
3. To do the cut boundary interpolation restore the coarsemodel
4. Enter POST1
5. Point to the coarse results file
6. Read in the desired set of data from the results file
7. Initiate cut-boundary interpolation
8. All interpolation work is now done
Syllabus 81Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 2
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Select Pick All
Syllabus 82Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - CBI Steps
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The following tasks are involved in performing
the cut boundary interpolation:
1. Identify and write the cut-boundary nodes
2. Restore the full set of nodes, write the database to
Jobname.DB
3.3. To do the cut boundary interpolation restore theTo do the cut boundary interpolation restore thecoarse modelcoarse model
4. Enter POST1
5. Point to the coarse results file
6. Read in the desired set of data from the results file
7. Initiate cut-boundary interpolation
8. All interpolation work is now done
Syllabus 83Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 3
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Enter example0702_coarse.db
Press OK
Syllabus 84Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 3
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Syllabus 85Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - CBI Steps
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The following tasks are involved in performing
the cut boundary interpolation:
1. Identify and write the cut-boundary nodes
2. Restore the full set of nodes, write the database to
Jobname.DB
3. To do the cut boundary interpolation restore the coarsemodel
4.4. Enter POST1Enter POST1
5.5. Point to the coarse results filePoint to the coarse results file
6.6. Read in the desired set of data from the results fileRead in the desired set of data from the results fi le
7. Initiate cut-boundary interpolation
8. All interpolation work is now done
Syllabus 86Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 4-6
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Syllabus 87Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Browse to find the result file
see next page
Select All items
Example CBI: Step 4-6R d th Fi t S t
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Read the First Set
Enter example0702_coarse.rst
Syllabus 88Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - CBI Steps
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The following tasks are involved in performing
the cut boundary interpolation:
1. Identify and write the cut-boundary nodes
2. Restore the full set of nodes, write the database to
Jobname.DB
3. To do the cut boundary interpolation restore the coarsemodel
4. Enter POST1
5. Point to the coarse results file
6. Read in the desired set of data from the results file
7.7. Initiate cutInitiate cut--boundary interpolationboundary interpolation
8. All interpolation work is now done
Syllabus 89Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 7
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Syllabus 90Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Press OK Browse to find
example0702_cutboundary
Example CBI: Step 7
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Press OKEnter example0702_fine.db
Syllabus 91Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 7
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Load the example0702_fine.cbdo
Press OK
Syllabus 92Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example CBI: Step 8
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Syllabus 93Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example - SolvePress Close
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Press Close
Press here
to Close
Syllabus 94Computational Mechanics, AAU, Esbjerg
AutoDesk Inventor
Example Contour PlotGeneral Postproc > Plot Results > Contour Plot > Nodal Sol
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General Postproc > Plot Results > Contour Plot > Nodal Sol
Select Stress
Select SX for stresses in
x-direction
Syllabus 95Computational Mechanics, AAU, Esbjerg
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Example Contour Plot
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Syllabus 96Computational Mechanics, AAU, Esbjerg
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Example Select - Entities
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See next pagefor selection
Syllabus 97Computational Mechanics, AAU, Esbjerg
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Example Select Nodes
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Select the
indicated
nodes
Syllabus 98Computational Mechanics, AAU, Esbjerg
AutoDesk InventorEnter OK when finished
Example List Results
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Syllabus 99Computational Mechanics, AAU, Esbjerg
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Select Stress, SCOMP
Press OK
Example List Results
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Syllabus 100Computational Mechanics, AAU, Esbjerg
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Example - Plot - Nodes
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Plot Nodes
Only 21 FE nodes aredisplayed the same nodes as
selected previously
Syllabus 101Computational Mechanics, AAU, Esbjerg
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Example Select - Entities
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Select Pick All
Syllabus 102Computational Mechanics, AAU, Esbjerg
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Example - Plot - Nodes
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Plot Nodes
Syllabus 103Computational Mechanics, AAU, Esbjerg
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Example - Plot - Nodes
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Syllabus 104Computational Mechanics, AAU, Esbjerg
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Example Define Path
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Syllabus 105Computational Mechanics, AAU, Esbjerg
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See next page for selection
Example Define Path - By Nodes
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Select the
indicated
nodes
Note: the
selection
order is
important start from the
hole
Syllabus 106Computational Mechanics, AAU, Esbjerg
AutoDesk InventorEnter OK when finished
Example Define Path - By Nodes
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Enter an appropiate name, e.g. SSX
Enter OK
Syllabus 107Computational Mechanics, AAU, Esbjerg
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Example Map onto Path
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Syllabus 108Computational Mechanics, AAU, Esbjerg
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Select Stress, SX
Press OK
Example Plot Path on Graph
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Syllabus 109Computational Mechanics, AAU, Esbjerg
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Select SX
Press OK
Example Plot Path on Graph
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Syllabus 110Computational Mechanics, AAU, Esbjerg
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File menu
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Syllabus 111Computational Mechanics, AAU, Esbjerg
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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.