element 零长度 求解决

shuibingling

本人在做一个题目时，遇到这样的问题，求大神解救

传导边界的一维传导问题，五节点四单元的link，第四跟第五节点同是[0.3,0]，error提示element 零长度
可是书里就是这么做的，请问是哪里出现问题的呢？

bennglove

这就是传说中的一维模型？？

为什么要做一维传导
ansys里是否有一维单元？

542623301

可能是你的单元不能生成在重合节点上吧

唯有奋斗

不会呀，完全没有任何警告的啊

supermenxp

LINK1 Assumptions and Restrictions
The spar element assumes a straight bar, axially loaded at its ends, of uniform properties from end to end.

The length of the spar must be greater than zero, so nodes I and J must not be coincident.

The spar must lie in an X-Y plane and must have an area greater than zero.

The temperature is assumed to vary linearly along the length of the spar.

The displacement shape function implies a uniform stress in the spar.

The initial strain is also used in calculating the stress stiffness matrix, if any, for the first cumulative iteration.

supermenxp

你还是先看看帮助

不知道你是什么单元，LINK1就不允许长度为零