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1、有限元软件应用作业作业：对一典型框架结构进行静力、模态、谐响应及单点响应谱分析问题：如图所示一典型混凝土框架，层高 4m，立柱 0.5m*0.5m，横向梁 0.6*0.22,纵向梁 0.6*0.22，板厚 0.2，纵向间距 5m，横向间距 4.5m 和 1.5m，材料密度：2500kg/m3,E=3e10pa,泊松比0.1667，柱底全部刚接，视为固端。求解问题：1. 了解该结构在静力下的变形与内力情况2. 对该结构的模态进行分析，得到各阶振型与频率3. 对该结构进行谐响应分析，得到结构在动力作用下的反应。求解过程1. 建立实体模型/clear,start/filename, structur
2、e/title structure/PREP7 ET,1,SOLID45, !选择单元类型 MP,EX,1,3e10 , MP,PRXY,1,0.1667, MP,DENS,1,2500, !设置材料属性 K,1,1.25,0,0.25K,2,1.25,0,-0.25K,3,0.75,0,0.25K,4,0.75,0,-0.25 K,5,1.25,12,0.25K,6,1.25,12,-0.25K,7,0.75,12,0.25K,8,0.75,12,-0.25!设置关键点V, 1, 2, 4, 3, 5, 6, 8, 7 !用点生成柱FLST,3,1,6,ORDE,1 FITEM,3,1 VG
3、EN,2,P51X, , ,6, , , ,0 FLST,3,2,6,ORDE,2 FITEM,3,1 FITEM,3,-2 VGEN,5,P51X, , , , ,5, ,0 !复制柱FLST,3,10,6,ORDE,2 FITEM,3,1 FITEM,3,-10 VSYMM,X,P51X, , , ,0,0 !镜像K,161,0.75,3.4,-0.11，K,162,0.75,3.4,0.11，K,163,0.75,4,-0.11，K,164,0.75,4,0.11， K,165,-0.75,3.4,-0.11，K,166,-0.75,3.4,0.11，K,167,-0.75,4,-0.1
4、1，K,168,-0.75,4,0.11， !设置关键点V,161,162,164,163,165,166,168, 167 !用点生成梁FLST,3,1,6,ORDE,1 FITEM,3,21 VGEN,5,P51X, , , , ,5, ,0 !复制梁K,201,1.25,3.4,-0.11，K,202,1.25,3.4,0.11，K,203,1.25,4,-0.11，K,204,1.25,4,0.11， K,205,6.75,3.4,-0.11，K,206,6.75,3.4,0.11，K,207,6.75,4,-0.11，K,208,6.75,4,0.11， !设置关键点V,201,20
5、2,204,203,205,206,208,207, !用点生成梁FLST,3,1,6,ORDE,1 FITEM,3,26 VGEN,5,P51X, , , , ,5, ,0 !复制SAVEFLST,3,5,6,ORDE,2 FITEM,3,26 FITEM,3,-30 VSYMM,X,P51X, , , ,0,0 !镜像FLST,3,15,6,ORDE,2 FITEM,3,21 FITEM,3,-35 VGEN,3,P51X, , , ,4, ,0 !复制K,521,0.89,3.4,0.25，K,522,1.11,3.4,0.25，K,523,1.11,4,0.25， K,524,0.89
6、,4,0.25， K,525,0.89,3.4,4.75，K,526,1.11,3.4,4.75，K,527,1.11,4,4.75， K,528,0.89,4,4.75，V,521,522,523,524,525,526,527,528,FLST,3,1,6,ORDE,1 FITEM,3,66 VGEN,4,P51X, , , , ,5, ,0 !复制FLST,3,4,6,ORDE,2 FITEM,3,66 FITEM,3,-69 VGEN,2,P51X, , ,6, , , ,0 !复制FLST,3,8,6,ORDE,2 FITEM,3,66 FITEM,3,-73 VSYMM,X,P51
7、X, , , ,0,0 ！镜像FLST,3,16,6,ORDE,2 FITEM,3,66 FITEM,3,-81 VGEN,3,P51X, , , ,4, ,0 ！复制K,905,-7.25,3.8,-10.25，K,906,-7.25,3.8,10.25，K,907,7.25,3.8,10.25，K,908,7.25,3.8,-10.25， K,909,-7.25,4,-10.25，K,910,-7.25,4,10.25，K,911,7.25,4,10.25，K,912,7.25,4,-10.25，v,905,906,907,908,909,910,911,912,！生成板FLST,3,1,
8、6,ORDE,1 FITEM,3,114 VGEN, ,P51X, , , , ,10, , ,1 !移动FLST,3,1,6,ORDE,1 FITEM,3,114 VGEN,3,P51X, , , ,4, ,0 ！复制FLST,2,116,6,ORDE,2 FITEM,2,1 FITEM,2,-116VOVLAP,P51X！叠加建模结果：2. 划分网格/prep7LESIZE,ALL,1, , , ,1, , ,1, MSHKEY,0MSHAPE,1,3d FLST,5,384,6,ORDE,2 FITEM,5,117 FITEM,5,-500CM,_Y,VOLU VSEL, , , ,P5
9、1X CM,_Y1,VOLU CHKMSH,VOLU CMSEL,S,_Y VMESH,_Y1 CMDELE,_Y CMDELE,_Y1 CMDELE,_Y2FINI划分结果：3，进行静力分析/SOLANTYPE,1 ！分析类型：静力FLST,2,20,5,ORDE,20 FITEM,2,1 FITEM,2,7 FITEM,2,13 FITEM,2,19 FITEM,2,25 FITEM,2,31 FITEM,2,37 FITEM,2,43 FITEM,2,49 FITEM,2,55 FITEM,2,61 FITEM,2,67 FITEM,2,73 FITEM,2,79 FITEM,2,85
10、FITEM,2,91 FITEM,2,97 FITEM,2,103 FITEM,2,109 FITEM,2,115 DA,P51X,ALL,！生成支座 ASEL,S,LOC,Y,4 FLST,2,77,5,ORDE,77 FITEM,2,124 FITEM,2,130 FITEM,2,136 FITEM,2,142 FITEM,2,148 FITEM,2,154 FITEM,2,160 FITEM,2,166 FITEM,2,172 FITEM,2,178 FITEM,2,184 FITEM,2,190 FITEM,2,196 FITEM,2,202 FITEM,2,208 FITEM,2,3
11、94 FITEM,2,400 FITEM,2,406 FITEM,2,412 FITEM,2,418 FITEM,2,424 FITEM,2,430 FITEM,2,436 FITEM,2,442 FITEM,2,448 FITEM,2,454 FITEM,2,460 FITEM,2,466 FITEM,2,472 FITEM,2,478 FITEM,2,484 FITEM,2,1087FITEM,2,1094FITEM,2,1100FITEM,2,1106FITEM,2,1652FITEM,2,1657FITEM,2,1662FITEM,2,1667FITEM,2,1672FITEM,2,1
12、697FITEM,2,1702FITEM,2,1707FITEM,2,1712FITEM,2,1717FITEM,2,1722FITEM,2,1828FITEM,2,1834FITEM,2,1840FITEM,2,1846FITEM,2,1853FITEM,2,1859FITEM,2,1865FITEM,2,1871FITEM,2,1877FITEM,2,1883FITEM,2,1981FITEM,2,2007FITEM,2,2011FITEM,2,2068FITEM,2,2074FITEM,2,2080FITEM,2,2086FITEM,2,2092FITEM,2,2098FITEM,2,2
13、306FITEM,2,2320FITEM,2,2326FITEM,2,2338FITEM,2,2344FITEM,2,2350FITEM,2,2352FITEM,2,2354FITEM,2,2356FITEM,2,2358FITEM,2,2506FITEM,2,2508SFA,P51X,1,PRES,2000ASEL,S,LOC,Y,8 FLST,2,77,5,ORDE,77 FITEM,2,214 FITEM,2,220 FITEM,2,226 FITEM,2,232 FITEM,2,238 FITEM,2,244 FITEM,2,250 FITEM,2,256 FITEM,2,262 FI
14、TEM,2,268 FITEM,2,274 FITEM,2,280 FITEM,2,286 FITEM,2,292 FITEM,2,298 FITEM,2,490 FITEM,2,496 FITEM,2,502 FITEM,2,508 FITEM,2,514 FITEM,2,520 FITEM,2,526 FITEM,2,532 FITEM,2,538 FITEM,2,544 FITEM,2,550 FITEM,2,556 FITEM,2,562 FITEM,2,568 FITEM,2,574 FITEM,2,580 FITEM,2,1112FITEM,2,1118FITEM,2,1125FI
15、TEM,2,1132FITEM,2,1677FITEM,2,1682FITEM,2,1687FITEM,2,1727FITEM,2,1732FITEM,2,1737FITEM,2,1742FITEM,2,1747FITEM,2,1752FITEM,2,1757FITEM,2,1762FITEM,2,1822FITEM,2,1888FITEM,2,1894FITEM,2,1900FITEM,2,1906FITEM,2,1913FITEM,2,1919FITEM,2,1925FITEM,2,1931FITEM,2,1937FITEM,2,1943FITEM,2,1985FITEM,2,2002FI
16、TEM,2,2104FITEM,2,2110FITEM,2,2116FITEM,2,2122FITEM,2,2128FITEM,2,2134FITEM,2,2386FITEM,2,2390FITEM,2,2392FITEM,2,2437FITEM,2,2451FITEM,2,2453FITEM,2,2455FITEM,2,2457FITEM,2,2510FITEM,2,2512FITEM,2,2514FITEM,2,2516SFA,P51X,1,PRES,2000ASEL,S,LOC,Y,12 FLST,2,77,5,ORDE,77 FITEM,2,304 FITEM,2,310 FITEM,2,316 FI
