大家帮忙看看为什么中间腹杆没有力的作用，附命令流

alwayszi

分析命令流如下，不知道哪一步出现问题了，中间腹杆没有应力，请大家指点。
finish
/clear
/title, diagonal ligament structural analysis
/prep7
dist1=1500
dist2=3500
height=14000
width=2500
q1=7.18
q2=7.494

et,1,188
keyopt,1,1,1
keyopt,1,2,1

r,1,1250
et,2,8

mp,ex,1,1.73e5
mp,nuxy,1,0.3
mp,dens,1,7.85e-9

sectype,1,beam,i,I175,0
secdata,175,175,175,11,11,7.5


k,1,0,0,0
kgen,8,all,,,,dist1,,,0
k,9,,height-500
k,10,,7*dist1+dist2
k,11,2500,1000
k,12,2500-500*0.194,1500
kgen,8,12,,,-291.57,1500,,,0

k,1000,10*width
k,2000,-10*width

*do,i,1,9,1
l,i,i+1
*enddo

*do,i,11,18,1
l,i,i+1
*enddo
l,9,19

*do,i,2,8,1
l,i,i+10
*enddo
*do,i,3,7,2
l,i,i+9
l,i,i+11
*enddo
l,1,12

lsel,s,line,,1,9,,1
latt,1,,1,,1000,,1
lesize,all,200,,,,,,,1
lmesh,all
allsel

lsel,s,line,,10,18,1,1
latt,1,,1,,2000,,1
lesize,all,200,,,,,,,1
lmesh,all
allsel

lsel,s,line,,19,32,,1
latt,1,1,2
lesize,all,,,1,,,,,1
lmesh,all
allsel
nummrg,node,,,,low
nummrg,kp,,,,low
/eshape,1
/replot

/solu
sstif,on
ksel,s,kp,,1,11,10
dk,all,ux,0,,0,uy,uz,rotx,roty,rotz

lsel,s,line,,1,6,,1
esll,s
sfbeam,all,,pres,-q1
allsel

lsel,s,line,,7,9,,1
esll,s
sfbeam,all,,pres,-q2
allsel
solve

/post1
plnsol,u,sum,2
plnsol,u,x,2
plnsol,s,eqv,2

应力云图

alwayszi

找到原因了，嘿嘿。其实腹杆是有力的作用的，只是plnsol不能将其显示出来。
esel
etable
pletable
就可以将腹杆的应力显示出来了。
，学的还是不够好啊，继续努力！