LS-dyna冲击分析不发生碰撞

大神帮我看一下，这个程序有什么问题，在运行后两个物体不能碰撞到一起。
/prep7
et,1,solid164
et,2,solid168
mp,ex,1,2e5
mp,ex,2,2e5
mp,prxy,1,0.3
mp,prxy,2,0.3
mp,dens,1,7.8e-9
mp,dens,2,7.8e-9
!!!!!!!built the model
k,1, 0,0,0
k,2,0,1,0
k,3,-14.95
k,4,-50.3
k,5,-14.95,91.623
k,6,-50.3,149.3
k,7,-48.25,149.3
l,4,3
l,3,5
l,5,7
l,7,6
l,6,4
al,1,2,3,4,5
vrotat,1,,,,,,1,2
sph4,,166.839,25,45.555 !!!locat156.839 there is a offset about 10
lsel,s,,,41,48
lesize,all,,,,10
!!!transfer volume to elment
mat,1
type,1
mshape,0
mshkey,1,3D
esize,4
*do,i,1,4
vsweep,i
*enddo
mat,2
type,2
mshape,1
mshkey,0,3D
esize,8
vmesh,5
asel,s,,,2,20,6
nsla,s,1
cm,cont_node,node
asel,s,,,6,24,6
nsla,s,1
cm,cont_node1,node
edpart,create
asel,s,,,4,22,6
nsla,s,1
cm,area_conta,area
asel,s,,,26
nsla,s,1
cm,area_target,area
edcgen,asts,1,2,0.1,0.1
edcontact,,,,,,,1,,0
allsel,all
fini
/solu
edenergy,1,1,1,1
edbvis,1,0.06
edopt,add,,both
edrst,100
edhtime,100
time,0.5
nsub,10
asel,s,,,2,20,6
asel,a,,,6,24,6
nsla,s,1
d,all,all
allsel
time,1
nsub,10
edpv,vgen,2,,-20000
allsel
solve
谢谢！！！