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土-结构相互作用模型命令流,为什么在土体底部加地震波上部结构没有位移,大家帮忙分析一下为什么?
/PREP7
L=200 !x长度
H=100 !z高度
B=200 !y宽度
E=1.323E+8 !弹性模量
density=3.1E+03 !密度
mu=0.3 !泊松比
dxyz=10 !网格尺寸
et,1,solid45
keyopt,1,2,1 !采用一致缩减积分
mp,ex,1,E
mp,prxy,1,mu
mp,dens,1,density
esize,dxyz
vatt,1
vmesh,all
et,3,beam4
r,3,0.25,0.0052,0.0052,0.5,0.5
mp,ex,3,1.1e11
mp,prxy,3,0.3
mp,dens,3,2500
et,4,shell63
r,4,0.2
mp,ex,4,1.0e11
mp,prxy,4,0.3
mp,dens,4,2500
save
k,9,0,0,100
k,10,0,0,103
k,11,0,0,106
k,12,0,0,109
k,13,0,0,112
k,14,0,0,115
k,15,0,0,118
k,16,0,0,121
k,17,0,0,124
k,18,0,0,127
k,19,0,0,130
k,20,0,0,133
k,21,0,0,136
LSTR, 9, 10
LSTR, 10,11
LSTR, 11, 12
LSTR, 12, 13
LSTR, 13,14
LSTR, 14, 15
LSTR,15, 16
LSTR, 16,17
LSTR, 17, 18
LSTR, 18, 19
LSTR, 19,20
LSTR, 20, 21
!****************************************************************
lesize,0.2
mshape,0,2D !生成四边形单元,划分二维模型
mshkey,1 !映射网格划分
latt,3,3,3,
mat,3
type,3
lmesh,13,24,1
lgen,2,13,24,1,0,-20,0,, ,1 !移动线 !x方向移动-20m
lgen,2,13,24,1,0,40,0,,, !复制线
lsel,s,,,13,36
lgen,2,13,36,1,20,0,0
lgen,2,13,36,1,-20,0,0
LSTR,62,75
LSTR,10,23
LSTR,36,49
LSTR,62,10
LSTR,10,36
LSTR,23,49
LSTR,75,23
lsel,s,loc,z,103
lesize,0.2
mshape,0,2D !生成四边形单元,划分二维模型
mshkey,1 !映射网格划分
latt,3,3,3,
mat,3
type,3
lmesh,all
lgen,12,85,91,,,,3
al,85,89,90,91,87,88
asel,s,,,7
esize,2
mshape,0,2D
mshkey,0
aatt,4,4,4
mat,4
type,4
amesh,7
asel,s,,,7
!复制面
asel,s,,,7
agen,12,7,,,,,3
save
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