请教：ANSYS三维网格划分 (附命令流）

结构很复杂
相当于一个实体（空气）抠去一个复杂的塔装的结构
我用自由剖分，计算机iteration4步开始划分时就跳出ansys了
还望大侠们指教如何剖分？谢谢！
  
（图片所示是加上空气之前被抠掉的模型）
  
/Filename,Ctower
  
!part 1:initializing geometry date
TtoGround=1615 !塔距离地面高度
Thigh=132 !塔架的厚度
CtoC=100 !电容器间距离
CtoT=18 !电容器与塔架的距离
TtoT=1230 !塔架之间的距离
Clen=1320 !电容器长
Cwid=325 !电容器的宽
CtoZ=328 !套管到底面距离
Chight=450 !电容器的高
Ttowall=5000 !塔到四周墙的距离
Bhigh=400 !套管高度
boltlen=48 !螺栓长度
BushHigh=448 !套管高度
nutrad=14 !螺母半径
Bushtobush=1900 !顶头的套管间距离
Junbushrad=20 !汇流排半径
fratofra=970 !框架间距离
Junbushlen=5820-2*fratofra !汇流排长度
framrad=150 !框架屏蔽半径
Pingblen=8306 !屏蔽间距
pingbwid=8320 !最上屏蔽宽
Pingbrad=600 !最上屏蔽半径
  
!Part2,creating the keypoint,line, areas and volume;
  
/PREP7
  
BLOCK,Ttowall,Ttowall+Clen,Ttowall,Ttowall+Cwid,TtoGround,TtoGround+Chight
!BLOCK,Ttowall+Clen+2*BushHigh+Bushtobush,Ttowall+Clen+2448+1320+448,Ttowall,Ttowall+Cwid,TtoGround,TtoGround+Chight
BLOCK,Ttowall+Clen+2*BushHigh+Bushtobush,Ttowall+Clen+2*BushHigh+Bushtobush+Clen,Ttowall,Ttowall+Cwid,TtoGround,TtoGround+Chight
WPOFFS,Ttowall+Clen+Bhigh
WPROTA,,,90
CYl4,-(TtoGround+CtoZ),Ttowall+Cwid/2,nutrad,,,,boltlen
WPOFFS,,,Bushtobush
CYl4,-(TtoGround+CtoZ),Ttowall+Cwid/2,nutrad,,,,boltlen
VGEN,13,1,14,1,0,CtoC+Cwid,0
VDELE,2,4,2
WPROTA,,-90
WPOFFS,,,Ttowall+fratofra
CYl4,-TtoGround-CtoZ,Bushtobush/2,Junbushrad,,,,Junbushlen
WPOFFS,CtoZ+18+framrad,,-Cwid-fratofra
CYl4,-TtoGround-CtoZ,Bushtobush+Clen+BushHigh+Cwid,framrad,,,,5820+framrad+Cwid !此处cwid不是指电容器宽，只是框架屏蔽中心到电容器的距离认为等于cwid
CYl4,-TtoGround-CtoZ,-(Clen+BushHigh+Cwid+boltlen),framrad,,,,5820+framrad+Cwid !竖屏蔽
  
WPROTA,,-90
WPOFFS,-TtoGround-CtoZ,,-(Clen+BushHigh+Cwid+boltlen)
CYl4,0,0,framrad,,,,(Bushtobush+Clen+BushHigh+Cwid)+(Clen+BushHigh+Cwid+boltlen)
CYl4,0,-(5820+framrad+Cwid),framrad,,,,(Bushtobush+Clen+BushHigh+Cwid)+(Clen+BushHigh+Cwid+boltlen)
  
Sphere,framrad
WPOFFs,,-(5820+framrad+Cwid)
Sphere,framrad
WPOFFs,,,(Bushtobush+Clen+BushHigh+Cwid)+(Clen+BushHigh+Cwid+boltlen)
Sphere,framrad
WPOFFs,,(5820+framrad+Cwid)
Sphere,framrad
vadd,4,53,54,55,56,57,58,59
allsel
NUMCMP,all
  
VGEN,10,1,52,1,,0,TtoT
  
WPOFFS,-2*(CtoZ+18+framrad)
WPOFFS,-12300+150+250,-(5820+framrad+Cwid)/2,-(Bushtobush+Clen+BushHigh+Cwid)/2-(Clen+BushHigh+Cwid+boltlen)/2
WPOFFS,,,Pingblen/2
WPOFFS,,pingbwid/2
WPROTA,,90
CYl4,0,0,Pingbrad,,,,pingbwid
WPOFFS,,-Pingblen
CYl4,0,0,Pingbrad,,,,pingbwid
wprota,,-90
CYl4,0,0,Pingbrad,,,,Pingblen
WPOFFS,,-pingbwid
CYl4,0,0,Pingbrad,,,,Pingblen
Sphere,Pingbrad
WPOFFS,,pingbwid
Sphere,Pingbrad
WPOFFS,,,Pingblen
Sphere,Pingbrad
WPOFFS,,-pingbwid
Sphere,Pingbrad
vadd,521,522,523,524,525,526,527,528
Allsel,all
Nummrg,all
Numcmp,all
  
!Part3: Creat air model
WPAVE,0,0,0
WPROTA,0,180,-90
!WPCSYS,,0 !工作平面回到整天笛卡儿座标
BLOCK,0,Ttowall*2+Clen*2+BushHigh*2+Bushtobush,0,Ttowall*2+5820,0,14880+6000
ALLsel,all
Vovlap,all
Nummrg,all
Numcmp,all
  
VDELE,1,521
ALLsel,all
Nummrg,all
NUMcmp,all