求教大神，这种空心圆管（孔插销孔）的体，应该如何划分单元，求详细命令流，新用户，金币有限，感谢。建体命令如下：
FINISH
/CLEAR
!定义参数
*SET,INTERR,80       !内径internal diameter
*SET,EXTERR,90       !外径external diameter
*SET,LEGHIGH,1500    !桩腿长度
*SET,HOLED,200       !孔距Hole distance
*SET,HOLER,20
/PREP7     
ET,1,SOLID92
MP,EX,1,2.06E5       !材料性质,单位N，mm，kg
MP,PRXY,1,0.3
mp,dens,1,7.85e-6
WPROTA,0,90,         !WPROTA, THXY, THYZ, THZX
CYLIND,INTERR,EXTERR,0,LEGHIGH,
WPROTA,0,-90,
CYLIND,0,HOLER,-EXTERR,EXTERR,
WPROTA,0,0,90
CYLIND,0,HOLER,-EXTERR,EXTERR,
WPROTA,0,0,-90
ALLSEL,ALL
VGEN,2,2,,,0,-HOLED/2,,,,
VGEN,NINT(LEGHIGH/HOLED),3,4,1,0,-HOLED,,,,
VDELE,2,,,1
VSBV,1,ALL, , , DELETE
NUMCMP,ALL


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