Ansys Exemple 01 Plaque

7/24/2019 Ansys Exemple 01 Plaque

1/111

Course in ANSYS

Example0702

Computational Mechanics, AAU, EsbjergAutoDesk Inventor


2/111

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


3/111

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

Computational Mechanics, AAU, EsbjergAutoDesk Inventor


4/111

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


AutoDesk Inventor


5/111

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


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)


6/111

Example Areas Rectangle


AutoDesk Inventor


7/111

Example Areas CirclePreprocessor > Modeling > Create > Areas > Circle > Solid Circle

Create an area given by (X,Y)=(0, 0) and Radius=10


AutoDesk Inventor

Enter 10

Press OK


(4 lines) are automatically generated(also numbered automatically)


8/111

Example - Area


AutoDesk Inventor


9/111


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


Select the circular area


10/111

Example Areas


AutoDesk Inventor


11/111

Example - Numbering


AutoDesk Inventor

Switch on Keypoint, Line, and Area Numbers


12/111

Example - List Menu

List Keypoint, Lines, and Areas


AutoDesk Inventor


13/111

Example - Plot Menu

Plot Keypoint, Lines, and Areas


AutoDesk Inventor


14/111

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

Press Add


AutoDesk Inventor


15/111

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


AutoDesk Inventor

Press Options

Press Help to learn more about theelement.

Select Plane strs w/thk


16/111

Example Real ConstantsPreprocessor > Real Constants > Add

Place the cursor

on the relevantelement and

press OK


AutoDesk Inventor


17/111

Example - Real ConstantsPreprocessor > Real Constants > Add

Press OK

Press Close

to finish

Enter 10


AutoDesk Inventor


18/111

Example - Material PropertiesPreprocessor > Material Props > Material Models

Double Click

to step in the

material tree


AutoDesk Inventor


19/111

Example - Material Properties


AutoDesk Inventor

Preprocessor > Material Props > Material ModelsEnter 210000

Modulus of elasticity

Enter 0.3

Poissons ratio

Click here

to Close

Press OK


20/111

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


AutoDesk Inventor

Select/Pick

Lines tospecify

mesh size

for

Pick the two

longest lines

Press OK when finish with selection

See next page


21/111

Example Mesh Size

3 Element subdivisions




AutoDesk Inventor


22/111

Example Concatenate Lines


AutoDesk Inventor

Select L2 and L3 to create

a topologically four sided

geometryPress OK


23/111

Example - MeshingPreprocessor > Meshing > Mesh > Areas > Mapped > 3 or 4 sided


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


24/111

Example Mapped Mesh


AutoDesk Inventor


25/111

Example Analysis Type

Solution > Analysis Type > New Analysis

File > Write DB log file

Enter example0702_coarse.lgw


AutoDesk Inventor


26/111

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


AutoDesk Inventor


27/111

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


AutoDesk Inventor


28/111

Example Define LoadsSolution > Define Loads > Apply > Structural > Pressure > On l ines

Select theright

straight line

Enter -100

Press OK

to finish


AutoDesk InventorNote: Pressure acts normal and

inward to a surface


29/111

Example - Save

Display of Analysis model

Save the model


AutoDesk Inventor


30/111

Example - SolveSolution > Solve > Current LS


AutoDesk Inventor

Press OK


31/111

Example - SolvePress Close

Press here

to Close


AutoDesk Inventor


32/111

Example Contour PlotGeneral Postproc > Plot Results > Contour Plot > Nodal Sol

Select Stress

Select SX for stresses inx-direction


AutoDesk Inventor


33/111

Example Contour Plot


AutoDesk Inventor


34/111

Example Select - Entities

See next page

for selection


AutoDesk Inventor


35/111


AutoDesk Inventor

Example Select Nodes

Select the

indicated

nodes

Enter OK when finished


36/111

Example List Results


AutoDesk Inventor

Select Stress, SCOMP

Press OK


37/111



AutoDesk Inventor


38/111

Example - Plot - Nodes

Plot Nodes

Only 11 FE nodes are

displayed the same nodes as

selected previously


AutoDesk Inventor

S


39/111


Select Pick All


AutoDesk Inventor

E l Pl t N d


40/111


Plot Nodes


AutoDesk Inventor

E l Pl t N d


41/111



AutoDesk Inventor

E l D fi P th


42/111


AutoDesk Inventor

Example Define Path

See next page for selection

E l D fi P th B N d


43/111

Example Define Path - By Nodes


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


44/111


Enter an appropiate name, e.g. SSX

Enter OK


AutoDesk Inventor

E l M t P th


45/111


AutoDesk Inventor

Example Map onto Path

Select Stress, SX

Press OK

Example Plot Path on Graph


46/111


AutoDesk Inventor


Select SX

Press OK



47/111



AutoDesk Inventor



48/111



follows: Create and analyze the coarse model.

Create theCreate the submodelsubmodel..

Perform cut boundary interpolation (CBI).


Verify that the distance between the cutboundaries and the stress concentration is

adequate.


AutoDesk Inventor

Example title


49/111

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


AutoDesk Inventor



50/111

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


AutoDesk Inventor

Enter 25

Enter 25Enter 0 or

leave emptyPress OK






51/111



AutoDesk Inventor

Example Areas Circle


52/111

Example Areas CirclePreprocessor > Modeling > Create > Areas > Circle > Solid CircleCreate an area given by (X,Y)=(0, 0) and Radius=10


AutoDesk Inventor

Enter 10

Press OK




Example - Area


53/111

Example - Area


AutoDesk Inventor

Example - Operate


54/111


AutoDesk Inventor

Example - OperatePreprocessor > Modeling > Operate > Booleans > Subtract > AreasCreate the final area by subtracting the circular area from the rectangular area


Press OK

Select the rectangular area and press OK


Select the circular area

Example Areas


55/111

Example Areas


AutoDesk Inventor

Example - Numbering


56/111

Example Numbering


AutoDesk Inventor

Switch on Keypoint, Line, and Area Numbers

Example - List Menu


57/111

Example List Menu

List Keypoint, Lines, and Areas


AutoDesk Inventor

Example - Plot Menu


58/111

Example Plot Menu

Plot Keypoint, Lines, and Areas


AutoDesk Inventor

Example Element Type


59/111


Press Add


AutoDesk Inventor

Example - Element Type


60/111


Press Options


AutoDesk Inventor

Press Help to learn more about the

element.

Select Plane strs w/thk

Example Real Constants


61/111


Place the cursor

on the relevant

element andpress OK


AutoDesk Inventor

Example - Real Constants


62/111


Press OK

Press Closeto finish

Enter 10


AutoDesk Inventor



63/111

p pPreprocessor > Material Props > Material Models

Double Click

to step in the

material tree


AutoDesk Inventor



64/111

p p


AutoDesk Inventor

Preprocessor > Material Props > Material ModelsEnter 210000

Modulus of elasticity

Enter 0.3

Poissons ratio

Click here

to Close

Press OK

Example - Meshing


65/111

p gPreprocessor > Meshing > Size Cntrls > ManualSize > Lines > Picked Lines


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


66/111

p





AutoDesk Inventor

Example Concatenate Lines


67/111

p


AutoDesk Inventor

Select L2 and L3 to create

a topologically four sided

geometryPress OK

Example - Meshing


68/111

p gPreprocessor > Meshing > Mesh > Areas > Mapped > 3 or 4 sided


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


69/111


AutoDesk Inventor

Example Define Loads


70/111

Solution > Define Loads > Apply > Structural > Displacement > On Lines

Select UY to fix the plate in the y-direction

Select thebottom straight

line

Press OK


AutoDesk Inventor

Example Define Loads


71/111

Solution > Define Loads > Apply > Structural > Displacement > On Lines

Select UX to fix the plate in the x-direction

Select the leftstraight line

Press OK


AutoDesk Inventor

Example - Submodel


72/111


AutoDesk Inventor

Example - Steps in Submodeling


73/111


follows:

Create and analyze the coarse model.

Create the submodel.

Perform Cut Boundary Interpolation (CBI).Perform Cut Boundary Interpolation (CBI).


Verify that the distance between the cutboundaries and the stress concentration is

adequate.


AutoDesk Inventor

Example CBI Steps


74/111

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


AutoDesk Inventor

Example CBI: Step 1


75/111

Plot Nodes


AutoDesk Inventor

Example CBI: Step 1


76/111

See next page

for selection


AutoDesk Inventor

Example CBI: Step 1


77/111


AutoDesk Inventor

Example CBI: Step 1


78/111

Plot Nodes


AutoDesk Inventor

Example CBI: Step 1


79/111


AutoDesk Inventor

Example CBI: Step 1


80/111


AutoDesk Inventor

Enter example0702_cutboundaryPress OK

Example - CBI Steps


81/111


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


4. Enter POST1






AutoDesk Inventor

Example CBI: Step 2


82/111

Select Pick All


AutoDesk Inventor

Example - CBI Steps


83/111


the cut boundary interpolation:

1. Identify and write the cut-boundary nodes


Jobname.DB

3.3. To do the cut boundary interpolation restore theTo do the cut boundary interpolation restore thecoarse modelcoarse model

4. Enter POST1






AutoDesk Inventor

Example CBI: Step 3


84/111

Enter example0702_coarse.db

Press OK


AutoDesk Inventor

Example CBI: Step 3


85/111


AutoDesk Inventor

Example - CBI Steps


86/111





Jobname.DB


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




AutoDesk Inventor

Example CBI: Step 4-6


87/111


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


88/111

Read the First Set

Enter example0702_coarse.rst


AutoDesk Inventor

Example - CBI Steps


89/111





Jobname.DB


4. Enter POST1



7.7. Initiate cutInitiate cut--boundary interpolationboundary interpolation



AutoDesk Inventor

Example CBI: Step 7


90/111


AutoDesk Inventor

Press OK Browse to find

example0702_cutboundary

Example CBI: Step 7


91/111

Press OKEnter example0702_fine.db


AutoDesk Inventor

Example CBI: Step 7


92/111

Load the example0702_fine.cbdo

Press OK


AutoDesk Inventor

Example CBI: Step 8


93/111


AutoDesk Inventor

Example - SolvePress Close


94/111

Press Close

Press here

to Close


AutoDesk Inventor

Example Contour PlotGeneral Postproc > Plot Results > Contour Plot > Nodal Sol


95/111

General Postproc > Plot Results > Contour Plot > Nodal Sol

Select Stress

Select SX for stresses in

x-direction


AutoDesk Inventor

Example Contour Plot


96/111


AutoDesk Inventor



97/111

See next pagefor selection


AutoDesk Inventor

Example Select Nodes


98/111

Select the

indicated

nodes





99/111


AutoDesk Inventor

Select Stress, SCOMP

Press OK



100/111


AutoDesk Inventor



101/111

Plot Nodes

Only 21 FE nodes aredisplayed the same nodes as

selected previously


AutoDesk Inventor



102/111

Select Pick All


AutoDesk Inventor



103/111

Plot Nodes


AutoDesk Inventor



104/111


AutoDesk Inventor

Example Define Path


105/111


AutoDesk Inventor

See next page for selection



106/111

Select the

indicated

nodes

Note: the

selection

order is

important start from the

hole





107/111

Enter an appropiate name, e.g. SSX

Enter OK


AutoDesk Inventor

Example Map onto Path


108/111


AutoDesk Inventor

Select Stress, SX

Press OK



109/111


AutoDesk Inventor

Select SX

Press OK



110/111


AutoDesk Inventor

File menu


111/111


AutoDesk Inventor

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.

Date post:	22-Feb-2018
Category:	Documents
Upload:	el-youbi-mohammed
View:	216 times
Download:	0 times

Ansys Exemple 01 Plaque

Documents