应力约束下拓扑优化 求高手指点迷津
本帖最后由 chongbin 于 2011-10-30 14:10 编辑应力约束下做拓扑优化，绿色设计区体积最小为优化目标，总是出现柔性过大的错误，不知该如何进行设置
鼓起部分为固定约束部位
在拓扑优化前做过Radioss，应力正常，变形也正常
************************************************
** PROGRAM STOPPED: FATAL ERROR(s) ENCOUNTERED.
**** END OF REPORT ****
For Useful OptiStruct Tips and Tricks, go to the URL:
http://www.altairhyperworks.com/tips.aspx
************************************************
RADIOSS/OptiStruct error termination report:
RAM: 95 MB total, 95 MB used.
Data arrays: 417 total, 206 allocated.
DATA SET size 46 MB, ram_disk 2 MB
DATASET USAGE: ndirs: 1, nfiles 1, nsets: 10, nblocks: 10, mode: 8
DIR: 0, size 45.4, path "D:/10.30/" num_files 1
---
PROGRAM STOPPED DUE TO ERROR.
************************************************
A fatal error has occurred during computations:
** ERROR #312 **
In static load case 1
the compliance is negative or large 4.383816E+11
Optimization/buckling analysis cannot be performed
due to possible rigid body mode
OPTIMIZATION HAS CONVERGED.
FEASIBLE DESIGN.
...
************************************************ 静态工况载荷1中，应变能奇异或过大。由于可能存在的的刚体模型，屈曲优化分析不能执行。不知道对不对？？
页:
[1]