哪位大神帮我看一下这个ANSYS模型怎么收敛不了

/filename,A2 !长度单位mm,重力单位N
/prep7
et,1,solid92
mp,ex,1,2e5
mp,nuxy,1,0.3
tb,miso,1
tbpt,,0.002,400 !这里屈服台阶用水平线模拟,是标准的钢筋三折线模型
tbpt,,0.029,400
tbpt,,0.139,620
tbplot
*dim,ban,array,9,1
ban(1,1)=7.19,7.36,7.1,7.3,7.18,7.39,7.33,7.45,7.4
*do,i,1,9,1
k,i,50*(i-1),ban(i)
*enddo
bsplin,all
k,10,0,0
k,11,400,0
l,1,10
l,9,11
l,10,11
al,1,2,3,4
vrotat,all,,,,,,10,11
lesize,all,4$mshape,1,3D$mshkey,0$vmesh,all
nummrg,all$nummcmp,all
/solu
asel,s,loc,x,0$da,all,ux$da,all,uy$da,all,uz$allsel,all
asel,s,loc,x,400$da,all,uy$da,all,uz$allsel,all
autots,on
outres,all,all
nsubst,10
nlgeom,on
asel,s,loc,x,400$sfa,all,1,pres,-70000/172.034$allsel,all
solve
finish
我是初学者，啥都不懂，在线等大神指导