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10.5 blast loading on a stiffened plate*Amplitude, name=Blast, smooth=0.250., 0., 0.001, 700000., 0.01, 700000., 0.02, 0.0.05, 0.* * MATERIALS*材料明确为铁 *Material, name=Steel*Density7800.,*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* * BOUNDARY CONDITIONS* * Name: Fix edges Type: Symmetry/Antisymmetry/Encastre*BoundaryEdge, ENCASTRE* -* * STEP: Blast* *Step, name=BlastApply blast loading*显性动态分析*Dynamic, Explicit, 0.05*Bulk Viscosity!修改屈曲粘性参数，均使用缺省值0.06, 1.2* * LOADS* * Name: Pressure load Type: 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，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*MATERIAL, 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，静力分析(屈曲崩塌分析 关键字*STATIC,STABILIZE的使用)例字手册1.2.5Unstable static problem: reinforced plate under compressive loads*ELEMENT,TYPE=SPRING1,ELSET=EPONT 50000,340 50001,2881*弹簧可模拟拉条*SPRING,ELSET=EPONT 3, 5.3E+08,*BEAM SECTION,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, *BEAM SECTION,MATERIAL=ACIER,SECTION=RECT,ELSET=E0000002 1.500000E-02, 1.500000E-02 0.000000E+00, 8.695324E-03,-9.999622E-01*SHELL SECTION,ELSET=E0000003,MATERIAL=ACIER 7.000E-03, 3*SHELL SECTION,ELSET=E0000004,MATERIAL=ACIER 1.000E-02, 3*SHELL SECTION,ELSET=TOLE,MATERIAL=ACIER 5.000E-03, 3*SHELL SECTION,ELSET=E0000006,MATERIAL=ACIER 6.000E-03, 3*SHELL SECTION,ELSET=E0000007,MATERIAL=ACIER 7.000E-03, 3*SHELL SECTION,ELSET=E0000008,MATERIAL=ACIER 1.000E-02, 3*SHELL SECTION,ELSET=E0000009,MATERIAL=ACIER 1.000E-02, 3*SHELL SECTION,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*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=200S,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，静力分析，焊点与接触的使用例子1.2.3Buckling of a column with 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, 0.0000000E+00180.0E6, 1.7205942E-03190.0E6, 3.8296832E-03200.0E6, 6.3897874E-03210.0E6, 9.4694765E-03220.0E6, 1.3143660E-02230.0E6, 1.7493792E-02240.0E6, 2.2608092E-02250.0E6, 2.8581845E-02260.0E6, 3.5517555E-02270.0E6, 4.3525275E-02280.0E6, 5.2722659E-02290.0E6, 6.3235357E-02300.0E6, 7.5197279E-02310.0E6, 8.8750519E-02320.0E6, 0.1040458330.0E6, 0.1212430340.0E6, 0.1405106350.0E6, 0.1620263360.0E6, 0.1859779370.0E6, 0.2125620380.0E6, 0.2419857390.0E6, 0.2744660400.0E6, 0.3102303410.0E6, 0.3495160420.0E6, 0.3925720430.0E6, 0.4396578440.0E6, 0.4910434450.0E6, 0.5470111460.0E6, 0.6078544470.0E6, 0.6738777480.0E6, 0.7453985490.0E6, 0.8227461500.0E6, 0.9062610510.0E6, 0.9962980*NSET,NSET=BASE,GEN 101,129,1 200,214,1*BOUNDARY BASE,ENCASTRE*