1、一起學(xué)習(xí)板屈曲分析simwe會(huì)員名：LXCAD一，材料為鐵，適合做模板分析，動(dòng)態(tài)顯性,物質(zhì)的非線形指南10.5 blast loading on a stiffened plate*Amplitude, name=Blast, smooth=0.250., 0., 0.001, ., 0.01, ., 0.02, 0.0.05, 0.* * MATERIALS*材料明確為鐵 *Material, name=Steel*Density7800.,*Elastic 2.1e+11, 0.3* Plastic關(guān)鍵字規(guī)定使用Misess屈服準(zhǔn)則*Plastic 3e+08, 0. 3.5e+08, 0

2、.025 3.75e+08, 0.1 3.94e+08, 0.2 4e+08, 0.35* * BOUNDARY CONDITIONS* * Name: Fix edges Type: Symmetry/Antisymmetry/Encastre*BoundaryEdge, ENCASTRE* -* * STEP: Blast* *Step, name=BlastApply blast loading*顯性動(dòng)態(tài)分析*Dynamic, Explicit, 0.05*Bulk Viscosity!修改屈曲粘性參數(shù)，均使用缺省值0.06, 1.2* * LOADS* * Name: Pressure

3、 load Type: Pressure*Dsload, amplitude=Blast_PickedSurf6, P, 1.* 二，箱型結(jié)構(gòu)使用動(dòng)態(tài)求特征值例子手冊(cè)2.2.4中，Eigenvalue analysis of a structure using the parallel Lanczos eigensolver*PARAMETER* modal input parametersnumModes = 200lowFreq = 0.0highFreq = 133.0*SHELL GENERAL SECTION, ELSET=ALL, MATERIAL=STEEL0.01*MATERI

4、AL, NAME=STEEL*ELASTIC200.E9, 0.3*DENSITY7800.0* Step definition*STEPFrequency extraction*FREQUENCY, NUMBER INTERVAL=4,*BOUNDARYBOTLEFT, ENCASTREBOTRIGHT, ENCASTRE*output, field, freq=0*END STEP三，靜力分析(屈曲崩塌分析 關(guān)鍵字*STATIC,STABILIZE的使用)例字手冊(cè)1.2.5Unstable static problem: reinforced plate under compressive

5、 loads*ELEMENT,TYPE=SPRING1,ELSET=EPONT 50000,340 50001,2881*彈簧可模擬拉條*SPRING,ELSET=EPONT 3, 5.3E+08,*BEAM SECTION,MATERIAL=ACIER,SECTION=RECT,ELSET=E 1.E-02, 1.E-02 0.E+00, 6.E-03,-9.E-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, *B

6、EAM SECTION,MATERIAL=ACIER,SECTION=RECT,ELSET=E 1.E-02, 1.E-02 0.E+00, 8.E-03,-9.E-01*SHELL SECTION,ELSET=E,MATERIAL=ACIER 7.000E-03, 3*SHELL SECTION,ELSET=E,MATERIAL=ACIER 1.000E-02, 3*SHELL SECTION,ELSET=TOLE,MATERIAL=ACIER 5.000E-03, 3*SHELL SECTION,ELSET=E,MATERIAL=ACIER 6.000E-03, 3*SHELL SECTI

7、ON,ELSET=E,MATERIAL=ACIER 7.000E-03, 3*SHELL SECTION,ELSET=E,MATERIAL=ACIER 1.000E-02, 3*SHELL SECTION,ELSET=E,MATERIAL=ACIER 1.000E-02, 3*SHELL SECTION,ELSET=E,MATERIAL=ACIER 1.000E-02, 3*NSET,NSET=NM1 329, *ELSET,ELSET=HILOIRE E,E,E*ELSET,ELSET=BARROTS E,E,E*ELSET,ELSET=TOT TOLE,HILOIRE,BARROTS,E,

8、E,E*MPCBEAM,COTE1,NM1*BOUNDARYNM1,3,3NM1,4,4NM1,6,6COTE2,1,1COTE2,3,3COTE2,4,4COTE2,6,68896,2,2COTE3,2,2COTE3,4,4COTE3,6,6COTE4,2,2COTE4,4,4COTE4,6,6*RESTART,WRITE,F=30* *STEP,NLGEOM,INC=1GRAVITY LOAD*STATIC1.,1.*DLOADTOT,GRAV,9.81,0,0,-1.*NODE FILE,NSET=NM1,FREQ=1U,CF*EL FILE,ELSET=HILOIRE,FREQ=200

9、S,E,PE *ENERGY FILE *OUTPUT,FIELD,FREQ=30*NODE OUTPUT U,*OUTPUT,HISTORY*NODE OUTPUT,NSET=NM1U,CF*ENERGY OUTPUT,VARIABLE=ALL*EL PRINT,FREQ=0*NODE PRINT,FREQ=0*END STEP*STEP,NLGEOM,INC=1000BUCKLING LOAD*STATIC,STABILIZE0.1,1.,*CLOADNM1,1,646.E+04*END STEP四，靜力分析，焊點(diǎn)與接觸的使用例子1.2.3Buckling of a column with

10、 spot welds*SHELL SECTION,ELSET=WPIL,MATERIAL=STEEL, SECTION INTEGRA=GAUSS 0.002,*SHELL SECTION,ELSET=BPIL,MATERIAL=STEEL, SECTION INTEGRA=GAUSS 0.003,*MATERIAL,NAME=STEEL*DENSITY 7850.,*ELASTIC 206.8E9,0.3*PLASTIC170.0E6, 0.E+00180.0E6, 1.E-03190.0E6, 3.E-03200.0E6, 6.E-03210.0E6, 9.E-03220.0E6, 1.

11、E-02230.0E6, 1.E-02240.0E6, 2.E-02250.0E6, 2.E-02260.0E6, 3.E-02270.0E6, 4.E-02280.0E6, 5.E-02290.0E6, 6.E-02300.0E6, 7.E-02310.0E6, 8.E-02320.0E6, 0.330.0E6, 0.340.0E6, 0.350.0E6, 0.360.0E6, 0.370.0E6, 0.380.0E6, 0.390.0E6, 0.400.0E6, 0.410.0E6, 0.420.0E6, 0.430.0E6, 0.440.0E6, 0.450.0E6, 0.460.0E6

12、, 0.470.0E6, 0.480.0E6, 0.490.0E6, 0.500.0E6, 0.510.0E6, 0.*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, *RIGID BODY,ELSET=ROOF,REF=60000*NSET,NSET=WELDREFNODES,GEN 5203,45203,10000 5211,45211,10000*ELEMENT

13、, TYPE=CONN3D2, ELSET=FASTCONN,5203,15203,25203,35203,45203,5211,15211,25211,35211,45211,*ORIENTATION, NAME=GLOBAL1.,0.,0.,0.,1.,0.*CONNECTOR SECTION, ELSET=FASTCONN, BEHAVIOR=BEHV,ELIMINATION=NOCARTESIAN,CARDANGLOBAL,*CONNECTOR BEHAVIOR, NAME=BEHV*CONNECTOR DERIVED COMPONENT, NAME=normal3,1.0*CONNE

14、CTOR DERIVED COMPONENT, NAME=normal4,5.3333,.3333*CONNECTOR DERIVED COMPONENT, NAME=shear6,.5,*CONNECTOR DERIVED COMPONENT, NAME=shear1,21.0,1.0*CONNECTOR ELASTICITY, COMPONENT=12.E+11,*CONNECTOR ELASTICITY, COMPONENT=22.E+11,*CONNECTOR ELASTICITY, COMPONENT=32.E+11,*CONNECTOR ELASTICITY, COMPONENT=

15、42.E+11,*CONNECTOR ELASTICITY, COMPONENT=52.E+11,*CONNECTOR ELASTICITY, COMPONENT=62.E+11,*CONNECTOR DAMAGE INITIATION,CRITERION=FORCE,2.E+5*CONNECTOR POTENTIALnormal,.02,MACAULEYshear,.05,ABS*CONNECTOR DAMAGE EVOLUTION,TYPE=MOTION,AFFECTED COMPONENTS,SOFTENING=TABULAR1,2,3,4,5,60.0,0.01.0,1.E-7*CON

16、NECTOR POTENTIAL1,2,3,4,5,6,*FASTENER, INTERACTION NAME=SPOTWELDS, ELSET=FASTCONN,PROPERTY=WELDPROPS BPIL, WPIL*FASTENER PROPERTY, NAME=WELDPROPS 0.001,*STEP*DYNAMIC,EXPLICIT ,10.E-3*CONTACT PAIR BPIL,*CONTACT PAIR,INTER=WELDS BPIL, WPIL*SURFACE INTERACTION,NAME=WELDS*FRICTION .3,*BOUNDARY,TYPE=VELO

17、CITY 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,TIME MARKS=YES,NUMBER INTER=50*NODE OUTPUT U, *OUTPUT,FIELD, NUMBER=2*NODE OUTPUT, NSET=QA_TEST U,*OUTPUT,HISTORY*ELEMENT OUTPUT, ELSET=FASTCONNCTF,CDIF,CDMG*ENERGY OUTPUT, VAR=PRESELEC

18、T*END STEP五，基準(zhǔn)手冊(cè)中1.2.6Buckling of a column with general contactBASEDHEADINGBUCKLING OF X SHAPED CROSS SECTIONWITH GENERAL CONTACT*PREPRINT,MODEL=YES,HISTORY=YES,CONTACT=YES*NODE 601,0.,-.2,0.0 611,0., .2,0.0 106,0., 0.,-.21106,0., 0., .2*10601,0.05,-.2,0.010611,0.05, .2,0.010106,0.05, 0.,-.211106,0.

19、05, 0., .2*NGEN,NSET=A601,611,1106,1106,100*NGEN,NSET=A110601,10611,110106,11106,100*NODE,1.,-.2,0.0,1., .2,0.0,1., 0.,-.2,1., 0., .2*,0.95,-.2,0.0,0.95, .2,0.0,0.95, 0.,-.2,0.95, 0., .2*NGEN,NSET=B,1,100*NGEN,NSET=B1,1,100*NFILL,NSET=ALL1A1,B1,18,10000*ELEMENT,TYPE=S4R 1, 601,602,10602,10601101, 60

20、6,607,10607,10606201, 106,206,10206,10106301, 606,706,10706,10606*ELGEN,ELSET=FIN1 1, 5,1,1, 20,10000,5*ELGEN,ELSET=FIN2101, 5,1,1, 20,10000,5*ELGEN,ELSET=FIN3201, 5,100,1, 20,10000,5*ELGEN,ELSET=FIN4301, 5,100,1, 20,10000,5*ELSET,ELSET=SHELLSFIN1,FIN2,FIN3,FIN4*SHELL SECTION, SECTION INT=GAUSS,ELSE

21、T=SHELLS,MATERIAL=STEEL.003,*NODE,0.,-.45,-.45,0., .0,-.45,0., .45,-.45,0.,-.45,0.,0., .0,0.,0., .45,0.,0.,-.45,.45,0., .0,.45,0., .45, .45,0.,0.,0.*ELEMENT,TYPE=R3D4,ELSET=WALL1, , , , ,*NODE,1.,-.45,-.45,1., .0,-.45,1., .45,-.45,1.,-.45,0.,1., .0,0.,1., .45,0.,1.,-.45,.45,1., .0,.45,1., .45, .45,1

22、.,0.,0.*ELEMENT,TYPE=R3D4,ELSET=WALL2, , , , ,*MATERIAL,NAME=STEEL*DENSITY7850., *ELASTIC200.E9,.3*PLASTIC250.E6,0.700.E6,1.*BOUNDARY,2,3,4,4,6,6,1,6*INITIAL CONDITIONS,TYPE=VELOCITY , 1,1, 50. , 5,5, 78.54*RESTART,TIMEMARKS=NO,WRITE,NUM=10*SURFACE,TYPE=ELEMENT, NAME=WALL1WALL1,SPOS*SURFACE,TYPE=ELE

23、MENT, NAME=WALL2WALL2,SNEG*SURFACE,TYPE=NODE,NAME=A A,*SURFACE,TYPE=NODE,NAME=B B,*RIGID BODY, ELSET=WALL1, REF NODE=*RIGID BODY, ELSET=WALL2, REF NODE=*NSET,NSET=NRIGID ,*TIE, NAME=TIE1,POSITION TOLERANCE=1.E-4A, WALL1*TIE, NAME=TIE2,POSITION TOLERANCE=1.E-4B, WALL2*STEP*DYNAMIC,EXPLICIT,0.7E-2*BOU

24、NDARY,TYPE=VEL* compress 35 percent axially and rotate 31 degrees during the step, 1,1, 50., 5,5, 78.54*CONTACT*CONTACT INCLUSIONS,ALL ELEMENT BASED* Output requests for postprocessing*OUTPUT,FIELD,VAR=PRESELECT*OUTPUT,HISTORY,TIME INTERVAL=2.E-5*NODE OUTPUT, NSET=NRIGIDU, RF*ENERGY OUTPUTALLIE,ALLK

25、E,ALLWK* Output requests for qa testing*ELSET,ELSET=QA_TESTELFIN4,*NSET,NSET=QA_TESTN,ELSET=FIN4*NSET,NSET=QA_TESTRBNRIGID,*OUTPUT,FIELD,NUMBER INTERVAL=1*ELEMENT OUTPUT,ELSET=QA_TESTELPEEQ,*NODE OUTPUT,NSET=QA_TESTNU, *NODE OUTPUT, NSET=QA_TESTRBU, RF*OUTPUT,HISTORY,TIME INTERVAL=1.75E-3*ENERGY OUT

26、PUT,VAR=PRESELECT*FILE OUTPUT,NUMBER=4,TIMEMARKS=YES*ENERGY FILE*NODE FILEU,RF*END STEP六，基準(zhǔn)手冊(cè)中1.2.5Lateral buckling of an L-bracket*HEADING L-shaped bracket 17 element mesh, eigenvalue buckling analysis*NODE 101, 0., 225., 165, 225., 225., 173, 255., 225., 901, 0., 255., 965, 225., 255., 973, 255.,

27、255., 1101, 225., 0., 1165, 225., 225., 1901, 255., 0., 1965, 255., 225.,*NGEN,NSET=EDGE1 101, 165 165, 173*NGEN,NSET=EDGE2 901, 965 965, 973*NGEN,NSET=EDGE3 1101, 1165*NGEN,NSET=EDGE4 1901, 1965*NFILL EDGE1, EDGE2, 8, 100*NFILL EDGE3, EDGE4, 8, 100*ELEMENT,TYPE=S4 101, 101, 109, 909, 901 1101, 1101, 1901, 1909, 1109*ELGEN,ELSET=BLOCK1 101,9,8,1*ELGEN,ELSET=BLOCK2 1101,7,8,1*ELEMENT,TYPE=S4,ELSET=BLOCK3 110