FINI /CLEAR /UNITS,SI /PREP7 DAMPRATIO=0.02 !振型阻尼系数都为0.02 ET,1,BEAM188 KEYOPT,1,7,1 KEYOPT,1,8,1 ET,2,MASS21,,,4 MP,EX,1,210E9 MP,NUXY,1,0.3
MP,DENS,1,7800 MPDATA,DAMP,1,,DAMPRATIO SECTYPE,3,BEAM,I SECDATA,0.2,0.2,0.5,0.01,0.01,0.008 R,1,1.6E2,1.6E2 R,2,1.2E2,1.2E2 K,1,0,0,0 K,2,0,3,0 K,3,0,6,0 K,4,0,9,0 K,5,0,12,0 K,6,0,0,10000
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L,1,2 L,2,3 L,3,4 L,4,5
LSEL,,,,1,4 LATT,1,0,1,,6,,3 ALLS
LESIZE,ALL, , ,3 , , , , ,1 LMESH,ALL NUMMRG,ALL NUMCMP,ALL TYPE,2 REAL,1 E,2 TYPE,2 REAL,2 E,8 E,14 E,20
!*SET,NT,1001 !*SET,DT,0.02
!*DIM,AC,,NT
!*VREAD,AC(1),RECORD,TXT !(F8.3) /SOLU D,1,ALL, ANTYPE,0 SOLVE FINISH
/SOLU !模态分析 ANTYPE,2
MODOPT,SUBSP,8 MXPAND,8, , ,1 SOLVE FINI
!得到自振频率1
*GET,FREQ1,MODE,1,FREQ /ESHAPE,1.0 /SOLU
ANTYPE,SPECTR !谱分析 SPOPT,SPRS
MDAMP,1,DAMPRATIO, , , , , , SED,1
SVTYPE,2,1
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FREQ,0.167,0.25,0.333,0.44444,0.5,0.667,1,1.25,1.667
SV,,0.154350625,0.191590625,0.210210625,0.224175625,0.250716714,0.329514922,0.484352764,0.598723486,0.786897371 FREQ,2.222,10,100000 SV,,1.034212766,1.034212766,0.3528
!按7度多遇地震，地震影响系数0.08 第一组III场地TG＝0.45 SRSS,0.01,DISP SOLVE FINISH /POST1 /INP,,MCOM
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