是一个沉井结构，底部有底板，底板下面有十字交叉深梁，采用solid65单元建模，下面是我的命令流，按照我的方法计算时总不收敛，我想会不会是划分网格的问题，想请前辈帮忙指教，ansys用得不是很熟练，希望能给出命令流或给予详细的解答，谢谢了。
finish
/clear
/filname,chenjing-solid
/title,analysis of chenjing-solid
!参数定义
t1=1.5 !沉井壁厚
t2=1 !混凝土底板厚
t3=0.6 !深梁宽
b1=9.5 !沉井外半径
b2=1.5 !开孔半径
!--------前处理---------------------------
/PREP7
!定义单元类型
ET,1,solid65
KEYOPT,1,1,0
KEYOPT,1,5,0
KEYOPT,1,6,0
KEYOPT,1,7,1
!定义实常数
!实参数1：沉井不同方向配筋
R,1,2,0.004,90,,2,0.04,
RMORE,90,90,,,,, ! 环向配筋率为0.4%，纵向配筋率为4%
R,2,2,0.04,,,2,0.04,
RMORE,90,,,,,, ! x向配筋率为4%，y向配筋率为4%
!显示控制
/PNUM,KP,0
/PNUM,LINE,0
/PNUM,AREA,0
/PNUM,VOLU,1
!定义材料属性
!混凝土基本材料属性
fc=14.3e6
ft=1.43e6
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,1,,3e10
MPDATA,PRXY,1,,0.2
!破坏准则 TB,CONC,1,1,9,
TBTEMP,0
TBDATA,,0.3,0.5,ft,fc,,
TBDATA,,,,1,,,
MPTEMP,,,,,,,,
MPTEMP,1,0
!钢材基本属性
MPDATA,EX,2,,2.06e11
MPDATA,PRXY,2,,0.3
!屈服准则TB,BISO,2,1,2,
TBTEMP,0TBDATA,,235e6,,,,,
!创建关键点,创建沉井
k,1,0,0,0
k,2,0,0,30.8
l,1,2
PCIRC,8,9.5,0,360
VDRAG,1,,,,,,1
allsel
vplot
!开孔1
k,19,0,0,8
k,20,15,0,8
l,19,20
wpoffs,,,8
wprota,,,90
PCIRC,1.5,,0,360
VDRAG,11,,,,,,26
vptn,all
vdele,3,5,,1
numcmp,all
!开孔2
k,29,-13.703,-6.101,8
l,19,29
wprota,,156
PCIRC,1.5,,0,360
VDRAG,15,,,,,,41
vptn,all
vdele,3,5,,1
allsel
numcmp,all
!创建混凝土底板
wprota,,-156,-90
wpoffs,,,-3
cyl4,0,0,8,,,,1
allsel
!深梁
wpstyl,defa
a,8,39,40,9
voffst,23,0.3
vsymm,y,3
a,7,38,41,10
voffst,35,0.3
vsymm,x,5
vsel,s,,,2,6
vadd,all
allsel
numcmp,all
vovlap,all
numcmp,all
allsel
vdele,1,8,,1
numcmp,all
vglue,allallsel
!网格划分
wpoffs,,,12
vsbw,2
numcmp,all
CSWPLA,11,1,1,1
vsel,s,,,2,3
VATT,1,1,1,11
allsel
vsel,s,,,1
vatt,1,2,1,0
allsel
csys,0
MSHAPE,1,3D
mshkey,0
vsel,s,,,1
esize,0.6
vmesh,all
allsel
vsel,s,,,2
esize,1.5
vmesh,all
allsel
vsel,s,,,3
esize,0.6
vmesh,all
vimp,all,1,1
allsel