1、结构动力学作业杜玉东 2003205009!空间框架的动力分析/clear/title,kongjiankuangjiadyan/PREP7 wide=0.5high=0.5DAMPRATIO=0.05ET,1,BEAM189 ET,2,SHELL63R,1,0.1, , , , , , MP,EX,1,3e7MP,PRXY,1,0.2 MP,DENS,1,2.5 SECTYPE, 1, BEAM, RECT, secA, 0 SECOFFSET, CENT SECDATA,wide,high,0,0,0,0,0,0,0,0 K,1 k,2,0,6k,3,6,6k,4,6,0kgen,2,1,
2、4,1,0,0,3,4 LSTR,1,5 LSTR, 2,6 LSTR,3,7 lstr,4,8LSEL,all LATT,1,1,1, , , ,1 LSEL, , , ,ALL LESIZE,ALL, , ,2, , , , ,1 LMESH,alla,5,6,7,8TYPE, 2 MSHAPE,0,2D MSHKEY,1 AMESH,1 egen,5,100,all,0,0,3NUMMRG,ALLNUMCMP,ALL/SOLU nsel,s,loc,z,0D,all,ALLallsel/SOLU ! 模态分析ANTYPE,2MODOPT,SUBSP,8 MXPAND,8, , ,1 SO
3、LVEFINI!得到自振频率 1*GET,FREQ1,MODE,1,FREQ /ESHAPE,1.0 /SOLU ANTYPE,SPECTR !谱分析 SPOPT,SPRSMDAMP,1,0.05, , , , , , SED,1SVTYPE,2,1FREQ,0.167,0.25,0.333,0.44444,0.5,0.667,1,1.25,1.667SV,0.154350625,0.191590625,0.210210625,0.224175625,0.250716714,0.329514922,0.484352764,0.598723486,0.786897371FREQ,2.222,10
4、,100000SV,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 TG0.45SRSS,0.01,DISPSOLVEFINISH/POST1/INP,MCOMNSORT,U,SUM *GET,DMAX_SPE,SORT, ,MAX !反应谱最大变形FINISH ！时程分析/CONFIG,NRES,2000*SET,NT,1200*SET,DT,0.01 *DIM,AC,NT *VREAD,AC(1),tjb,TXT ！输入地震波(F10.4) /SOLUANTYPE,TRANSTRNOPT,FULL*DO,I,1
5、,1000ACEL,AC(I),0,0TIME,I*0.01OUTRES,ALL,ALLSOLVE*ENDDOFINISH/POST26FILENSOL,2,20,U,X,PLVAR,2, , , , , , , , , ,STORE,MERGEXVAR,1PLVAR,2,*GET,DMAX_TRANS,VARI,2,EXTREM,VMAX, , ! 时程分析最大位移模态分析结果结构前八阶频率SET TIME/FREQ LOAD STEP SUBSTEP CUMULATIVE1 0.96222 1 1 12 0.96222 1 2 23 1.4900 1 3 34 4.9614 1 4 45
6、4.9614 1 5 56 5.0973 1 6 67 5.1153 1 7 78 5.1211 1 8 8谱分析部分结果PRINT U NODAL SOLUTION PER NODE* POST1 NODAL DEGREE OF FREEDOM LISTING * NODE UX 2 0.12309E-0261 0.83655E-0289 0.12817E-01117 0.17251E-01MAXIMUM ABSOLUTE VALUESNODE 117VALUE 0.17251E-01NODE UY 2 0.31146E-0361 0.21167E-0289 0.32427E-02117 0
7、.43647E-02 PRINT M ELEMENT SOLUTION PER ELEMENTELEM= 1 MX MY MZ 1 12.257 48.509 0.38924E-044 10.004 39.499 0.38912E-043 0.26724E-04 0.10484E-03 0.11753E-07ELEM= 2 MX MY MZ 4 10.004 39.499 0.38901E-042 7.7570 30.509 0.38865E-045 0.72749E-04 0.28555E-03 0.35249E-07ELEM= 3 MX MY MZ 6 12.302 48.516 0.39
8、682E-049 9.9879 39.493 0.39670E-048 0.26782E-04 0.10450E-03 0.11664E-07时程分析结果顶层节点位移值和反应曲线TIME 129 UX UX 3.8100 -2.79595 3.8200 -2.99968 3.8300 -3.19384 3.8400 -3.37624 3.8500 -3.54517 3.8600 -3.69929 3.8700 -3.83751 3.8800 -3.95888 3.8900 -4.06273 3.9000 -4.14874 3.9100 -4.21677 3.9200 -4.26673 3.9300 -4.29859 3.9400 -4.31262 3.9500 -4.30937 3.9600 -4.28938 3.9700 -4.25305 3.9800 -4.20058 3.9900 -4.13220 4.0000 -4.04815
