请问怎么用柱坐标选择环形单元

wangdegui

/prep7    ! Enter the preprocessor
et,1,solid90
mp,alpx,1,1.06e-5  !钢的线膨胀系数
MP,Dens,1,920   !钢的密度
mp,c,1,2040   ! 钢的比热
mp,kxx,1,44  ! 钢的导热系数
mptemp,,20,200,400,600,800
mpdata,ex,1,,2.06e11,1.92e11,1.75e11,1.53e11,1.25e11 ! 不同温度点钢的弹性模量
mpdata,prxy,1,,0.3,0.3,0.3,0.3,0.3  ! 不同温度点钢的泊松比
tb,bkin,1,5  ! 指定材料模型
tbtemp,20
tbdata,1,1.40e9,2.06e10  ! 输入钢的屈服强度和切变模量
tbtemp,200
tbdata,1,1.33e9,1.98e10
tbtemp,400
tbdata,1,1.15e9,1.83e10
tbtemp,600
tbdata,1,0.92e9,1.56e10
tbtemp,800
tbdata,1,0.68e9,1.12e10

! define geometry   
k,1,-0.452571,0.836
k,2,-0.4557488,0.745
k,3,-0.4505,0.745
k,4,-0.4505,0.738
k,5,0.4505,0.738
k,6,0.4505,0.5945334
k,7,0.4922512,0.5595
k,8,0.5465,0.5595
k,9,0.622,0.507
k,10,0.622,0.488
k,11,0.8792613,0.488
k,12,0.89,0.4818
k,13,0.93,0.4818
k,14,0.9130452,0.5208
k,15,0.89,0.5341052
k,16,0.8661052,0.558
k,17,0.7781739,0.558
k,18,0.7015695,0.5937212
k,19,0.6273956,0.6821183
k,20,0.604,0.7463971
k,21,0.604,0.821
k,22,0.589,0.836
k,23,0.474429,0.836
k,24,0.4712512,0.745
k,25,0.4557488,0.745
k,26,0.452571,0.836
k,27,0.4505,0.745
*do,i,1,25
l,i,i+1
*enddo
l,23,26
l,25,27
l,5,27
l,26,1
a,1,2,3,4,5,27,25,26
a,23,24,25,26
a,24,25,27,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19
a,19,20,21,22,23,24
aglue,all

旋转成体
k,28,0,0,0
k,29,100,0,0
thetamax=180
vrotat,1,2,3,4,,,28,29,thetamax,1
thetamax=-180
vrotat,1,2,3,4,,,28,29,thetamax,1

体2和8是焊接地方，它们组成一个圆环，请问怎么将其单元排序，用来模拟焊接过程

ckwit

我也想问这个