本文用一个简单的例子来介绍采用ANSYS开展地震分析(包括静态分析、模态分析、反应谱分析和LS-DYNA时程分析)的一些概念,并给出详细的命令流,希望能够给那些初学者一些启示和帮助。本文命令流在ANSYS15.0下测试通过。

MP,EX,1,30e9 MP,NUXY,1,0.25

!**************************************************************** !---------------------建立框架结构几何模型----------------------- !**************************************************************** !顶视图 /VIEW,1,,,1 /ANG,1 /REP,FAST

!%%%%%%%%%%%%%%%%%%% !初步建立各层关键点 !%%%%%%%%%%%%%%%%%%%

!建立地面关键点(关键点编号100+) k,1,0,0,0 k,2,L,0,0 k,3,L,W,0 k,4,0,W,0

!复制生成1层关键点

kgen,2,1,4,1,,,Height_1,100,1, !复制生成2层关键点

kgen,2,1,4,1,,,Height_2,200,1,

!%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%&& !生成主立柱的全部线(组集:LiZhu_Main) !%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% allsel NUMSTR,LINE, 1 *do,i,1,2 *do,j,1,4

l,(i-1)*100+j,(i-1)*100+j+100 *enddo

*enddo lsel,all

CM,LiZhu_Main_LINE,LINE !建立主立柱的线集合(SET) !给立柱划分网格

k,9999,1000, 0, 0 !远点 lesize,all,mesh_size_LZ LATT,1,1,1, ,9999 , , lmesh,all allsel

!%%%%%%%%%%%%%%%%%%%%% !横梁建模并划分网格 !%%%%%%%%%%%%%%%%%%%%% k,8888,-1,-1,2000 !远点