/TITLE,topo for 2D cantiliver
/PREP7
!*
ET,1,PLANE82 !定义单元类型
!*
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,EX,1,,2e11
MPDATA,PRXY,1,,0.3 !定义材料属性
B=2 $H=1
BLC4,0,0,B,H !定义设计域
ESIZE,H/30,0, !定义网格划分尺寸
AMESH,ALL !划分网格
!*
NSEL,S,LOC,X,0
D,ALL, , , , , ,ALL, , , , , !施加位移约束
NSEL,S,LOC,X,B
NSEL,R,LOC,Y,H/2
F,ALL,FY,-1000 !施加载荷
ALLSEL,ALL
TOCOMP,COMP,SING,1, !定义单工况,柔度最小化优化
TOVAR,COMP,OBJ !定义目标函数COMP
TOVAR,VOLUME,CON, ,50, !定义体积约束(减掉50%体积)
/GRAPHICS,FULL
TOTYPE,OC !选择OC方法进行求解
TODEF,0.0001, !定义优化精度(收敛准则)0.0001
TOLOOP,40,1 !设置迭代次数40
!*
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