一起学习板屈曲分析.docx
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一起学习板屈曲分析.docx
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一起学习板屈曲分析
一起学习板屈曲分析
simwe会员名:
LXCAD
一,材料为铁,适合做模板分析,动态显性,物质的非线形
指南10.5blastloadingonastiffenedplate
*Amplitude,name=Blast,smooth=0.25
0.,0.,0.001,700000.,0.01,700000.,0.02,0.
0.05,0.
**
**MATERIALS
****材料明确为铁
*Material,name=Steel
*Density
7800.,
*Elastic
2.1e+11,0.3
******Plastic关键字规定使用Misess屈服准则
*Plastic
3e+08,0.
3.5e+08,0.025
3.75e+08,0.1
3.94e+08,0.2
4e+08,0.35
**
**BOUNDARYCONDITIONS
**
**Name:
FixedgesType:
Symmetry/Antisymmetry/Encastre
*Boundary
Edge,ENCASTRE
**----------------------------------------------------------------
**
**STEP:
Blast
**
*Step,name=Blast
Applyblastloading
******显性动态分析
*Dynamic,Explicit
0.05
*BulkViscosity!
!
!
!
修改屈曲粘性参数,均使用缺省值
0.06,1.2
**
**LOADS
**
**Name:
PressureloadType:
Pressure
*Dsload,amplitude=Blast
_PickedSurf6,P,1.
**
二,
箱型结构使用动态求特征值
例子手册2.2.4中,EigenvalueanalysisofastructureusingtheparallelLanczoseigensolver
*PARAMETER
**modalinputparameters
numModes=200
lowFreq=0.0
highFreq=133.0
**
*SHELLGENERALSECTION,ELSET=ALL,MATERIAL=STEEL
0.01
*MATERIAL,NAME=STEEL
*ELASTIC
200.E9,0.3
*DENSITY
7800.0
**
**Stepdefinition
**
*STEP
Frequencyextraction
*FREQUENCY,NUMBERINTERVAL=4
*BOUNDARY
BOTLEFT,ENCASTRE
BOTRIGHT,ENCASTRE
*output,field,freq=0
*ENDSTEP
三,静力分析(屈曲崩塌分析关键字*STATIC,STABILIZE的使用)
例字手册1.2.5 Unstablestaticproblem:
reinforcedplateundercompressiveloads
*ELEMENT,TYPE=SPRING1,ELSET=EPONT
50000,340
50001,2881
*******弹簧可模拟拉条
*SPRING,ELSET=EPONT
3,
5.3E+08,
*BEAMSECTION,MATERIAL=ACIER,SECTION=RECT,
ELSET=E0000001
1.500000E-02,1.500000E-02
0.000000E+00,6.557236E-03,-9.999785E-01
*MATERIAL,NAME=ACIER
*ELASTIC
2.100E+11,3.000E-01
*PLASTIC
235.259E+06,0.0
471.9E+06,0.18837
*DENSITY
7.850E+03,
*BEAMSECTION,MATERIAL=ACIER,SECTION=RECT,
ELSET=E0000002
1.500000E-02,1.500000E-02
0.000000E+00,8.695324E-03,-9.999622E-01
*SHELLSECTION,ELSET=E0000003,MATERIAL=ACIER
7.000E-03,3
*SHELLSECTION,ELSET=E0000004,MATERIAL=ACIER
1.000E-02,3
*SHELLSECTION,ELSET=TOLE,MATERIAL=ACIER
5.000E-03,3
*SHELLSECTION,ELSET=E0000006,MATERIAL=ACIER
6.000E-03,3
*SHELLSECTION,ELSET=E0000007,MATERIAL=ACIER
7.000E-03,3
*SHELLSECTION,ELSET=E0000008,MATERIAL=ACIER
1.000E-02,3
*SHELLSECTION,ELSET=E0000009,MATERIAL=ACIER
1.000E-02,3
*SHELLSECTION,ELSET=E0000010,MATERIAL=ACIER
1.000E-02,3
*NSET,NSET=NM1
329,
*ELSET,ELSET=HILOIRE
E0000004,E0000009,E0000010
*ELSET,ELSET=BARROTS
E0000003,E0000007,E0000008
*ELSET,ELSET=TOT
TOLE,HILOIRE,BARROTS,E0000001,E0000002,E0000006
**
*MPC
BEAM,COTE1,NM1
**
*BOUNDARY
NM1,3,3
NM1,4,4
NM1,6,6
COTE2,1,1
COTE2,3,3
COTE2,4,4
COTE2,6,6
8896,2,2
COTE3,2,2
COTE3,4,4
COTE3,6,6
COTE4,2,2
COTE4,4,4
COTE4,6,6
**
*RESTART,WRITE,F=30
**
************************************************
**
*STEP,NLGEOM,INC=1
GRAVITYLOAD
*STATIC
1.,1.
*DLOAD
TOT,GRAV,9.81,0,0,-1.
*NODEFILE,NSET=NM1,FREQ=1
U,CF
*ELFILE,ELSET=HILOIRE,FREQ=200
S,E,PE
*ENERGYFILE
*OUTPUT,FIELD,FREQ=30
*NODEOUTPUT
U,
*OUTPUT,HISTORY
*NODEOUTPUT,NSET=NM1
U,CF
*ENERGYOUTPUT,VARIABLE=ALL
*ELPRINT,FREQ=0
*NODEPRINT,FREQ=0
*ENDSTEP
**
*STEP,NLGEOM,INC=1000
BUCKLINGLOAD
*STATIC,STABILIZE
0.1,1.,,
*CLOAD
NM1,1,646.E+04
*ENDSTEP
四,静力分析,焊点与接触的使用
例子1.2.3 Bucklingofacolumnwithspotwelds
************************************************
**
*SHELLSECTION,ELSET=WPIL,MATERIAL=STEEL,
SECTIONINTEGRA=GAUSS
0.002,
*SHELLSECTION,ELSET=BPIL,MATERIAL=STEEL,
SECTIONINTEGRA=GAUSS
0.003,
************************************************
**
*MATERIAL,NAME=STEEL
*DENSITY
7850.,
*ELASTIC
206.8E9,0.3
*PLASTIC
170.0E6,0.0000000E+00
180.0E6,1.7205942E-03
190.0E6,3.8296832E-03
200.0E6,6.3897874E-03
210.0E6,9.4694765E-03
220.0E6,1.3143660E-02
230.0E6,1.7493792E-02
240.0E6,2.2608092E-02
250.0E6,2.8581845E-02
260.0E6,3.5517555E-02
270.0E6,4.3525275E-02
280.0E6,5.2722659E-02
290.0E6,6.3235357E-02
300.0E6,7.5197279E-02
310.0E6,8.8750519E-02
320.0E6,0.1040458
330.0E6,0.1212430
340.0E6,0.1405106
350.0E6,0.1620263
360.0E6,0.1859779
370.0E6,0.2125620
380.0E6,0.2419857
390.0E6,0.2744660
400.0E6,0.3102303
410.0E6,0.3495160
420.0E6,0.3925720
430.0E6,0.4396578
440.0E6,0.4910434
450.0E6,0.5470111
460.0E6,0.6078544
470.0E6,0.6738777
480.0E6,0.7453985
490.0E6,0.8227461
500.0E6,0.9062610
510.0E6,0.9962980
**************************************************
*NSET,NSET=BASE,GEN
101,129,1
200,214,1
*BOUNDARY
BASE,ENCASTRE
**************************************************
**
*SURFACE,TYPE=ELEMENT,NAME=BPIL
BPIL1,
*SURFACE,TYPE=ELEMENT,NAME=WPIL
WPIL1,
*RIGIDBODY,ELSET=ROOF,REF=60000
*NSET,NSET=WELDREFNODES,GEN
5203,45203,10000
5211,45211,10000
*ELEMENT,TYPE=CONN3D2,ELSET=FASTCONN
1000000,5203,105203
1000001,15203,1015203
1000002,25203,1025203
1000003,35203,1035203
1000004,45203,1045203
2000000,5211,105211
2000001,15211,1015211
2000002,25211,1025211
2000003,35211,1035211
2000004,45211,1045211
*ORIENTATION,NAME=GLOBAL
1.,0.,0.,0.,1.,0.
*CONNECTORSECTION,ELSET=FASTCONN,BEHAVIOR=BEHV,ELIMINATION=NO
CARTESIAN,CARDAN
GLOBAL,
*CONNECTORBEHAVIOR,NAME=BEHV
*CONNECTORDERIVEDCOMPONENT,NAME=normal
3,
1.0
*CONNECTORDERIVEDCOMPONENT,NAME=normal
4,5
.3333,.3333
*CONNECTORDERIVEDCOMPONENT,NAME=shear
6,
.5,
*CONNECTORDERIVEDCOMPONENT,NAME=shear
1,2
1.0,1.0
*CONNECTORELASTICITY,COMPONENT=1
2.E+11,
*CONNECTORELASTICITY,COMPONENT=2
2.E+11,
*CONNECTORELASTICITY,COMPONENT=3
2.E+11,
*CONNECTORELASTICITY,COMPONENT=4
2.E+11,
*CONNECTORELASTICITY,COMPONENT=5
2.E+11,
*CONNECTORELASTICITY,COMPONENT=6
2.E+11,
*CONNECTORDAMAGEINITIATION,CRITERION=FORCE
2.E+5
*CONNECTORPOTENTIAL
normal,.02,,MACAULEY
shear,.05,,ABS
*CONNECTORDAMAGEEVOLUTION,TYPE=MOTION,AFFECTEDCOMPONENTS,SOFTENING=TABULAR
1,2,3,4,5,6
0.0,0.0
1.0,1.E-7
*CONNECTORPOTENTIAL
1,
2,
3,
4,
5,
6,
*FASTENER,INTERACTIONNAME=SPOTWELDS,ELSET=FASTCONN,PROPERTY=WELDPROPS
BPIL,WPIL
*FASTENERPROPERTY,NAME=WELDPROPS
0.001,
**************************************************
*STEP
*DYNAMIC,EXPLICIT
10.E-3
********************
*CONTACTPAIR
BPIL,
********************
*CONTACTPAIR,INTER=WELDS
BPIL,WPIL
*SURFACEINTERACTION,NAME=WELDS
*FRICTION
.3,
********************
*BOUNDARY,TYPE=VELOCITY
60000,1,1,0.
60000,2,2,-25.
60000,3,3,-2.
60000,4,4,-7.
60000,5,5,0.
60000,6,6,-78.5
********************
*OUTPUT,FIELD,TIMEMARKS=YES,NUMBERINTER=50
*NODEOUTPUT
U,
*OUTPUT,FIELD,NUMBER=2
*NODEOUTPUT,NSET=QA_TEST
U,
*OUTPUT,HISTORY
*ELEMENTOUTPUT,ELSET=FASTCONN
CTF,CDIF,CDMG
*ENERGYOUTPUT,VAR=PRESELECT
*ENDSTEP
五,基准手册中1.2.6 Bucklingofacolumnwithgeneralcontact
BASEDHEADING
BUCKLINGOFXSHAPEDCROSSSECTION
WITHGENERALCONTACT
*PREPRINT,MODEL=YES,HISTORY=YES,CONTACT=YES
*NODE
601,0.,-.2,0.0
611,0.,.2,0.0
106,0.,0.,-.2
1106,0.,0.,.2
**
10601,0.05,-.2,0.0
10611,0.05,.2,0.0
10106,0.05,0.,-.2
11106,0.05,0.,.2
*NGEN,NSET=A
601,611,1
106,1106,100
*NGEN,NSET=A1
10601,10611,1
10106,11106,100
*NODE
200601,1.,-.2,0.0
200611,1.,.2,0.0
200106,1.,0.,-.2
201106,1.,0.,.2
**
190601,0.95,-.2,0.0
190611,0.95,.2,0.0
190106,0.95,0.,-.2
191106,0.95,0.,.2
*NGEN,NSET=B
200601,200611,1
200106,201106,100
*NGEN,NSET=B1
190601,190611,1
190106,191106,100
*NFILL,NSET=ALL1
A1,B1,18,10000
*ELEMENT,TYPE=S4R
1,601,602,10602,10601
101,606,607,10607,10606
201,106,206,10206,10106
301,606,706,10706,10606
*ELGEN,ELSET=FIN1
1,5,1,1,20,10000,5
*ELGEN,ELSET=FIN2
101,5,1,1,20,10000,5
*ELGEN,ELSET=FIN3
201,5,100,1,20,10000,5
*ELGEN,ELSET=FIN4
301,5,100,1,20,10000,5
*ELSET,ELSET=SHELLS
FIN1,FIN2,FIN3,FIN4
*SHELLSECTION,SECTIONINT=GAUSS,ELSET=SHELLS,MATERIAL=STEEL
.003,
*NODE
500001,0.,-.45,-.45
500002,0.,.0,-.45
500003,0.,.45,-.45
500004,0.,-.45,0.
500005,0.,.0,0.
500006,0.,.45,0.
500007,0.,-.45,.45
500008,0.,.0,.45
500009,0.,.45,.45
599995,0.,0.,0.
*ELEMENT,TYPE=R3D4,ELSET=WALL1
500001,500001,500002,500005,500004
500002,500002,500003,500006,500005
500003,500004,500005,500008,500007
500004,500005,500006,500009,500008
*NODE
600001,1.,-.45,-.45
600002,1.,.0,-.45
600003,1.,.45,-.45
600004,1.,-.45,0.
600005,1.,.0,0.
600006,1.,.45,0.
600007,1.,-.45,.45
600008,1.,.0,.45
600009,1.,.45,.45
699995,1.,0.,0.
*ELEMENT,TYPE=R3D4,ELSET=WALL2
600001,600001,600002,600005,600004
600002,600002,600003,600006,600005
600003,600004,600005,600008,600007
600004,600005,600006,600009,600008
*MATERIAL,NAME=STEEL
*DENSITY
7850.,
*ELASTIC
200.E9,.3
*PLASTIC
250.E6,0.
700.E6,1.
*BOUNDARY
599995,2,3
599995,4,4
599995,6,6
699995,1,6
*INITIALCONDITIONS,TYPE=VELOCITY
599995,1,1,50.
599995,5,5,78.54
*RESTART,TIMEMARKS=NO,WRITE,NUM=10
**
*SURFACE,TYPE=ELEMENT,NAME=WALL1
WALL1,SPOS
*SURFACE,TYPE=ELEMENT,NAME=WALL2
WALL2,SNEG
*SURFACE,TYPE=NODE,NAME=A
A,
*SURFACE,TYPE=NODE,NAME=B
B,
**
*RIGIDBODY,ELSET=WALL1,REFNODE=599995
*RIGIDBODY,ELSET=WALL2,REFNODE=699995
*NSET,NSET=NRIGID
599995,699995
*TIE,NAME=TIE1,POSITIONTOLERANCE=1.E-4
A,WALL1
*TIE,NAME=TIE2,POSITIONTOLERANCE=1.E-4
B,WALL2
*STEP
*DYNAMIC,EXPLICIT
0.7E-2
*BOUNDARY,TYPE=VEL
**compress35percentaxiallyandrotate31degreesduringthestep
599995,1,1,50.
599995,5,5,78.54
**
*CONTACT
*CONTACTINCLUSIONS,ALLELEMENTBASED
**
**Outputrequestsforpostprocessing
**
*OUTPUT,FIELD,VAR=PRESELECT
*OUTPUT,HISTORY,TIMEINTERVAL=2.E-5
*NODEOUTPUT,NSET=NRIGID
U,RF
*ENERGYOUTPUT
ALLIE,ALLKE,ALLWK
**
**Outputrequestsforqatesting
**
*ELSET,ELSET=QA_TESTEL
FIN4,
*NSET,NSET=QA_TESTN,ELSET=FIN4
*NSET,NSET
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