请问:1、板的厚度是通过建模见出来的还是通过赋予实常数来实现的?
2、对板进行网格划分,本文中的方式划分的网格过多,致使在进行静力分析时,导致速度太慢,有没有更好的划分网格的方法?
3、我想对这个板壳进行优化设计,以板的厚度为设计变量,以承受的最大应力和最大挠度为状态变量,以质量为目标函数,具体的命令流时什么,能不能发一些,供参考。- /FILNAM,SCRATCH
- /TITLE,OPTIMIZATION OF TOWER
- /PREP7
- ET,1,SHELL93
- MP,EX,1,2.07e11
- MP,PRXY,1,0.3
- MP,DENS,1,7850
- R,1,0.01
- *SET,D1,5.663
- *SET,D2,4.593
- *SET,D3,4.593
- *SET,D4,4.243
- *SET,D5,4.243
- *SET,t1,0.018
- *SET,t2,0.018
- *SET,t3,0.016
- *SET,t4,0.016
- *SET,t5,0.014
- K,1,D1/2,,,
- K,2,D2/2,,20.5,
- K,3,D3/2,,41,
- K,4,D4/2,,61.5,
- K,5,D5/2,,82,
- K,6,D5/2+t5,,82,
- K,7,D4/2+t4,,61.5,
- K,8,D3/2+t3,,41,
- K,9,D2/2+t2,,20.5,
- K,10,D1/2+t1,,0,
- l,1,2
- l,2,3
- l,3,4
- l,4,5
- l,5,6
- l,6,7
- l,7,8
- l,8,9
- l,9,10
- l,10,1
- LPLOT
- al,all
- K,100,0,,0,
- K,101,0,,82,
- vrotat,all,,,,,,100,101
- AATT,1,1,1,0
- LESIZE,ALL,0.25
- MSHAPE,1,2D
- AMESH,ALL
- CSYS,0 !创建刚性区域
- K,9999,0,0,82
- ET,2,MASS21
- R,1,0.01
- KSEL,S,LOC,Z,82,82
- KMESH,ALL
- NSEL,S,LOC,Z,82,82
- CERIG,NODE(0,0,82),ALL,ALL,,,,
- /SOL
- ANTYPE,0
- DA,11,ALL,
- DA,22,ALL,
- DA,33,ALL,
- DA,44,ALL,
- ACEL,0,0,9.8, !定义重力加速度
- F,164574,FY,385732
- nsel,all
- /STATUS,SOLU
- SOLVE !求解
- FINISH
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[ 本帖最后由 16443 于 2008-9-4 15:06 编辑 ] |