间接法求热应力总是无法完成求解
用间接法求热应力,热分析结果正确无误,但是转换成结构分析总是无法求解完成,然后错误信息是这样的*** ERROR *** CP = 11.934 TIME= 09:40:18 A small negative equation solver pivot term has been encountered at theUY degree of freedom of node 2559.Check for an insufficiently constrained model.
*** ERROR *** CP = 39.203 TIME= 10:31:49
A small negative equation solver pivot term has been encountered at the
UX degree of freedom of node 857.Check for an insufficiently
constrained model.
*** ERROR *** CP = 43.353 TIME= 10:36:59
A small negative equation solver pivot term has been encountered at the
UX degree of freedom of node 3241.Check for an insufficiently
constrained model.
等等,每次都不一样。虽然知道着说的是约束不全,但是不知道究竟应该是哪方面的问题;网上看也有很多人出现过这个问题,但是都没有给出很好的解决方案。希望能在这里解惑
期待高人解答! 已解决。
XY平面没有约束,产生刚性位移。
如果不想约束整条线,可以只在角点约束UX=0,UY=0.
页:
[1]