接触单元生成问题

simons

/prep7
et,1,solid95
et,2,targe170
et,3,conta174
keyopt,3,9,1
keyopt,3,12,1

mp,ex,1,2.06e5
mp,prxy,1,0.277
r,1,,,0.01,0.1,,
r,2,,,0.01,0.1,,
!modeling
k,1,,,
k,2,60,,
k,3,-3.5,13.5,   
k,4,-3.5,25,
k,5,-14,25,  
k,6,-14,28.4,
k,7,-7,28.4,
k,8,-5,30.4,
k,9,,30.4,   
k,10,,63.6,   
k,11,9,63.6,  
k,12,9,40.5,  
k,13,10.5,39,
k,14,10.5,28,
k,15,18.5,28,
k,16,18.5,21,
k,17,58,21,   
k,18,58,13.5,
l,3,4   
l,4,5   
l,5,6   
l,6,7   
l,7,8   
l,8,9   
l,9,10  
l,10,11
l,11,12
l,12,13
l,13,14
l,14,15
l,15,16
l,16,17
l,17,18
l,18,3
lfillt,1,2,2
lfillt,6,7,2
lfillt,11,12,5  
lfillt,13,14,2
al,all
vrotat,1,,,,,,1,2,-180,
wpoff,,50,   
wprota,,,90
cylind,,6,-2,11,,360
wpoff,47.553,-34.549,0  
cylind,,6,-2,11,,360
wpoff,-18.164,-55.902,0
cylind,,6,-2,11,,360
vsbv,1,3,,,
vsbv,6,4,,,     
vsbv,2,5,,,
vglue,1,3,
wpcsys,1,

mshape,1,3d
mshkey,0
vsel,all
vmesh,all

asel,s,,,17,19,1,1
asel,a,,,38,40,1,
nsla,s,,
esln,s,0
type,3
real,1
esurf
问题在执行倒数第5行命令时出现.说是"...线选不上".这是不是模型问题呢,还是另有原因?
模型图见图1
选不上的线示意图见图2

众位能不能帮忙指点小弟一下?不胜感激!

[ 本帖最后由 simons 于 2007-12-15 22:17 编辑 ]

simons

怎么没人理我啊??