本科生作业题有限元及答案.docx
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本科生作业题有限元及答案.docx
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本科生作业题有限元及答案
作业内容:
基结构为100mm×100mm×100mm的三维正方体,弹性模量E=210×103MPa,泊松比
=0.3,密度
=7.8×10-6kg/mm3,集中力P=30000N,作用于上表面中间一个节点,下边界四个角点采用固定支撑,划分10×10×10个体单元,要求建模后求出von米塞斯应力最大值与位移的最大变形值。
Project正方体的有限元建模与变形分析
计算分析模型如图所示,习题文件名:
cube
5.1进入ANSYS
程序→Ansys→Interactive→changetheworkingdirectoryintoyours→inputInitialjobname:
cube→Run
5.2设置计算类型
ANSYSMainMenu:
Preferences→selectStructural→OK
5.3选择单元类型
ANSYSMainMenu:
Preprocessor→ElementType→Add/Edit/Delete→Add→selectSolidBrick8node45→OK(backtoElementTypeswindow)→OK→Close(theElementTypewindow)
5.4定义材料参数
ANSYSMainMenu:
Preprocessor→MaterialProps→MaterialModels→Structural→Linear→Elastic→Isotropic→inputEX:
2.1e11,PRXY:
0.3→OK
5.5生成几何模型
✓生成立体
ANSYSMainMenu:
Preprocessor→Modeling→Create→Volumes→Block→依次输入三个点的坐标:
input:
1(0,0.1),2(0,0.1),3(0,0.1)→OK
5.6网格划分
ANSYSMainMenu:
Preprocessor→Meshing→MeshTool→(SizeControls)lines:
Set→PickAll(inPickingMenu)→inputNDIV:
10→OK→(backtothemeshtoolwindow)Mesh:
Columes,Shape:
HEX,Free→Mesh→PickAll(inPickingMenu)→Close(theMeshToolwindow)
5.8模型施加约束
✓给模型施加底面方向约束
ANSYSMainMenu:
Solution→DefineLoads→Apply→Structural→Displacement→OnNodes→拾取底边四个顶点:
AllDof→OK
✓施加y方向的载荷
ANSYSMainMenu:
Solution→DefineLoads→Apply→Structural→Force→Onnode→Pick———OK→VALI:
-3000→OK
5.9分析计算
ANSYSMainMenu:
Solution→Solve→CurrentLS→OK(toclosethesolveCurrentLoadStepwindow)→OK
5.10结果显示
ANSYSMainMenu:
GeneralPostproc→PlotResults→DeformedShape…→selectDef+Undeformed→OK(backtoPlotResultswindow)→ContourPlot→NodalSolu→select:
DOFsolution,UX,UY,Def+Undeformed→(backtoPlotResultswindow)Stress→VonMisesStress-----OK
Def+Undeformed最大变形为0.478E-5
DOFsolution,UX
DOFsolution,UY
VonMisesStress,最大值为0.457e+08
5.11退出系统
ANSYSUtilityMenu:
File→Exit→SaveEverything→OK
Log文件
/BATCH
/COM,ANSYSRELEASE10.0UP2005071811:
21:
2610/27/2009
/TITLE,cube
!
*
/NOPR
/PMETH,OFF,0
KEYW,PR_SET,1
KEYW,PR_STRUC,1
KEYW,PR_THERM,0
KEYW,PR_FLUID,0
KEYW,PR_ELMAG,0
KEYW,MAGNOD,0
KEYW,MAGEDG,0
KEYW,MAGHFE,0
KEYW,MAGELC,0
KEYW,PR_MULTI,0
KEYW,PR_CFD,0
/GO
!
*
/COM,
/COM,PreferencesforGUIfilteringhavebeensettodisplay:
/COM,Structural
!
*
/PREP7
!
*
ET,1,PLANE82
!
*
ETDEL,1
!
*
ET,1,PLANE2
!
*
ETDEL,1
!
*
ET,1,SOLID45
!
*
KEYOPT,1,1,0
KEYOPT,1,2,0
KEYOPT,1,4,0
KEYOPT,1,5,0
KEYOPT,1,6,0
!
*
ETDEL,1
!
*
ET,1,SOLID45
!
*
KEYOPT,1,1,0
KEYOPT,1,2,0
KEYOPT,1,4,0
KEYOPT,1,5,0
KEYOPT,1,6,0
!
*
!
*
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,1,,2.1e11
MPDATA,PRXY,1,,0.3
!
*
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDE,EX,1
MPDE,PRXY,1
MPDATA,EX,1,,2.1E+011
MPDATA,PRXY,1,,0.3
/REPLOT,RESIZE
BLOCK,0,0.1,0,0.1,0,0.1,
/ANG,1,30,ZS,1
/REP,FAST
/VIEW,1,1,1,1
/ANG,1
/REP,FAST
/DIST,1,0.729,1
/REP,FAST
/DIST,1,1.37174211248,1
/REP,FAST
SMRT,6
SMRT,5
SMRT,6
/ANG,1,-30,YS,1
/REP,FAST
/ANG,1,-30,YS,1
/REP,FAST
/ANG,1,-30,YS,1
/REP,FAST
FLST,5,12,4,ORDE,2
FITEM,5,1
FITEM,5,-12
CM,_Y,LINE
LSEL,,,,P51X
CM,_Y1,LINE
CMSEL,,_Y
!
*
/UI,MESH,OFF
/VIEW,1,1,1,1
/ANG,1
/REP,FAST
/VIEW,1,,-1
/ANG,1
/REP,FAST
/VIEW,1,-1
/ANG,1
/REP,FAST
/VIEW,1,,,1
/ANG,1
/REP,FAST
/VIEW,1,1,2,3
/ANG,1
/REP,FAST
/VIEW,1,1,1,1
/ANG,1
/REP,FAST
/FOC,1,0.3,,,1
/REP,FAST
/FOC,1,0.3,,,1
/REP,FAST
/AUTO,1
/REP,FAST
/USER,1
/DIST,1,0.106760391957
/ANG,1,-15.0000000000
/REPLO
/DIST,1,0.107098375811
/ANG,1,-10.8000000000
/REPLO
/DIST,1,1.08222638492,1
/REP,FAST
/DIST,1,0.108461042951
/ANG,1,-13.8000000000
/REPLO
/DIST,1,0.108718467028
/ANG,1,1.05000000000
/REPLO
FLST,5,9,4,ORDE,6
FITEM,5,2
FITEM,5,-3
FITEM,5,5
FITEM,5,-8
FITEM,5,10
FITEM,5,-12
CM,_Y,LINE
LSEL,,,,P51X
CM,_Y1,LINE
CMSEL,,_Y
!
*
FLST,5,9,4,ORDE,6
FITEM,5,2
FITEM,5,-3
FITEM,5,5
FITEM,5,-8
FITEM,5,10
FITEM,5,-12
CM,_Y,LINE
LSEL,,,,P51X
CM,_Y1,LINE
CMSEL,,_Y
!
*
/VIEW,2,1,1,1
/ANG,2
/REP,FAST
/AUTO,2
/REP,FAST
FLST,5,9,4,ORDE,6
FITEM,5,2
FITEM,5,-3
FITEM,5,5
FITEM,5,-8
FITEM,5,10
FITEM,5,-12
CM,_Y,LINE
LSEL,,,,P51X
CM,_Y1,LINE
CMSEL,,_Y
!
*
LESIZE,_Y1,,,10,,,,,1
!
*
FLST,5,12,4,ORDE,2
FITEM,5,1
FITEM,5,-12
CM,_Y,LINE
LSEL,,,,P51X
CM,_Y1,LINE
CMSEL,,_Y
!
*
LESIZE,_Y1,,,10,,,,,1
!
*
MSHAPE,1,3D
MSHKEY,0
!
*
CM,_Y,VOLU
VSEL,,,,1
CM,_Y1,VOLU
CHKMSH,'VOLU'
CMSEL,S,_Y
!
*
VMESH,_Y1
!
*
CMDELE,_Y
CMDELE,_Y1
CMDELE,_Y2
!
*
FLST,5,12,4,ORDE,2
FITEM,5,1
FITEM,5,-12
CM,_Y,LINE
LSEL,,,,P51X
CM,_Y1,LINE
CMSEL,,_Y
!
*
LESIZE,_Y1,,,10,,,,,1
!
*
MSHAPE,0,3D
MSHKEY,1
!
*
CM,_Y,VOLU
VSEL,,,,1
CM,_Y1,VOLU
CHKMSH,'VOLU'
CMSEL,S,_Y
!
*
!
*
VCLEAR,_Y1
VMESH,_Y1
!
*
CMDELE,_Y
CMDELE,_Y1
CMDELE,_Y2
!
*
FINISH
/SOL
/ANG,2,45.000000,XS,1
/REP,FAST
/ANG,2,45.000000,XS,1
/REP,FAST
/FOC,2,-0.450000,,,1
/REP,FAST
/FOC,2,-0.450000,,,1
/REP,FAST
/FOC,2,-0.450000,,,1
/REP,FAST
/ANG,2,-65.000000,ZS,1
/REP,FAST
/ANG,2,-65.000000,ZS,1
/REP,FAST
/VIEW,2,,-1
/ANG,2
/REP,FAST
/VIEW,2,,-1
/ANG,2
/REP,FAST
FLST,2,3,1,ORDE,3
FITEM,2,22
FITEM,2,122
FITEM,2,-123
/ANG,2,-45,XS,1
/REP,FAST
/ANG,2,-45,XS,1
/REP,FAST
/ANG,2,-45,XS,1
/REP,FAST
/ANG,2,-45,XS,1
/REP,FAST
/ANG,2,-45,XS,1
/REP,FAST
/ANG,2,-45,XS,1
/REP,FAST
/ANG,2,45,XS,1
/REP,FAST
/ANG,2,45,XS,1
/REP,FAST
/ANG,2,-45,YS,1
/REP,FAST
/ANG,2,-45,YS,1
/REP,FAST
/ANG,2,45,YS,1
/REP,FAST
/ANG,2,45,YS,1
/REP,FAST
/ANG,2,1,ZS,1
/REP,FAST
/ANG,2,1,ZS,1
/REP,FAST
/FOC,1,0.509342610551E-01,0.499760430110E-01,0.490896981691E-01
/REPLO
/FOC,1,0.511733212299E-01,0.499666439932E-01,0.488600370121E-01
/REPLO
/DIST,1,0.108701286431
/ANG,1,-0.300000000096E-01
/REPLO
/DIST,1,0.107942335362
/ANG,1,-4.18000000001
/REPLO
/ZOOM,2,BACK
FLST,2,3,1,ORDE,3
FITEM,2,22
FITEM,2,122
FITEM,2,-123
/DIST,1,1.00263748495,1
/REP,FAST
/VIEW,1,1
/ANG,1
/REP,FAST
/VIEW,1,,-1
/ANG,1
/REP,FAST
FLST,2,4,1,ORDE,4
FITEM,2,1
FITEM,2,12
FITEM,2,122
FITEM,2,-123
!
*
/GO
D,P51X,,,,,,ALL,,,,,
/VIEW,1,1,1,1
/ANG,1
/REP,FAST
/VIEW,1,,-1
/ANG,1
/REP,FAST
FLST,2,2,1,ORDE,2
FITEM,2,11
FITEM,2,-12
!
*
/GO
D,P51X,,,,,,ALL,,,,,
/VIEW,1,1,1,1
/ANG,1
/REP,FAST
FLST,2,1,1,ORDE,1
FITEM,2,11
FLST,2,1,1,ORDE,1
FITEM,2,11
DDELE,P51X,ALL
FLST,2,1,1,ORDE,1
FITEM,2,12
DDELE,P51X,ALL
FLST,2,1,1,ORDE,1
FITEM,2,1
DDELE,P51X,ALL
FLST,2,1,1,ORDE,1
FITEM,2,22
DDELE,P51X,ALL
/DIST,1,1.00263748495,1
/REP,FAST
/AUTO,1
/REP,FAST
/VIEW,1,1,2,3
/ANG,1
/REP,FAST
/VIEW,1,,,-1
/ANG,1
/REP,FAST
/VIEW,1,1
/ANG,1
/REP,FAST
/VIEW,1,1,2,3
/ANG,1
/REP,FAST
FLST,2,1,1,ORDE,1
FITEM,2,22
DDELE,P51X,ALL
/ZOOM,1,RECT,1.14893,-0.106777,1.34427549886,-0.0166384165225
/VIEW,1,1,1,1
/ANG,1
/REP,FAST
/DIST,1,0.997369453077,1
/REP,FAST
/DIST,1,0.997369453077,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/DIST,1,1.00263748495,1
/REP,FAST
/AUTO,1
/REP,FAST
FLST,2,1,1,ORDE,1
FITEM,2,22
DDELE,P51X,ALL
FLST,2,1,1,ORDE,1
FITEM,2,22
!
*
/GO
D,P51X,,,,,,ALL,,,,,
/VIEW,1,1
/ANG,1
/REP,FAST
/VIEW,1,,-1
/ANG,1
/REP,FAST
FLST,2,1,1,ORDE,1
FITEM,2,1
!
*
/GO
D,P51X,,,,,,ALL,,,,,
/VIEW,1,1,1,1
/ANG,1
/REP,FAST
FLST,2,1,1,ORDE,1
FITEM,2,1
DDELE,P51X,ALL
FLST,2,1,1,ORDE,1
FITEM,2,30
/VIEW,1,,-1
/ANG,1
/REP,FAST
FLST,2,1,1,ORDE,1
FITEM,2,11
!
*
/GO
D,P51X,,,,,,ALL,,,,,
/VIEW,1,1,1,1
/ANG,1
/REP,FAST
FLST,2,1,1,ORDE,1
FITEM,2,7
!
*
/GO
F,P51X,FY,3000
FLST,2,1,1,ORDE,1
FITEM,2,7
!
*
/GO
F,P51X,FY,-3000
FLST,2,1,1,ORDE,1
FITEM,2,6
FDELE,P51X,ALL
FLST,2,1,1,ORDE,1
FITEM,2,7
FDELE,P51X,ALL
FLST,2,1,1,ORDE,1
FITEM,2,7
!
*
/GO
F,P51X,FY,-3000
/VIEW,1,,-1
/ANG,1
/REP,FAST
/VIEW,1,1
/ANG,1
/REP,FAST
/VIEW,1,,,1
/ANG,1
/REP,FAST
/VIEW,1,,,-1
/ANG,1
/REP,FAST
/VIEW,1,1,1,1
/ANG,1
/REP,FAST
FLST,2,1,1,ORDE,1
FITEM,2,11
FDELE,P51X,ALL
FLST,2,1,1,ORDE,1
FITEM,2,11
FDELE,P51X,ALL
/USER,1
/ANG,1,-0.710000000000
/REPLO
/DIST,1,0.107771879291
/ANG,1,-0.820000000000
/REPLO
/REPLO
/REPLO
/AUTO,1
/REP,FAST
/VIEW,1,1,2,3
/ANG,1
/REP,FAST
/VIEW,1,,1
/ANG,1
/REP,FAST
/VIEW,1,,,-1
/ANG,1
/REP,FAST
FLST,2,1,1,ORDE,1
FITEM,2,11
FDELE,P51X,ALL
/VIEW,1,,-1
/ANG,1
/REP,FAST
/VIEW,1,1,2,3
/ANG,1
/REP,FAST
/VIEW,1,,,1
/ANG,1
/REP,FAST
/VIEW,1,,1
/ANG,1
/REP,FAST
/VIEW,1,1,2,3
/ANG,1
/REP,FAST
FLST,2,1,1,ORDE,1
FITEM,2,7
FDELE,P51X,ALL
/VIEW,1,,,1
/ANG,1
/REP,FAST
FLST,2,1,1,ORDE,1
FITEM,2,11
DDELE,P51X,ALL
/VIEW,1,1,1,1
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