求助
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本人新手，在用ansys算简单结构：一块板，板下布有纵梁和横梁，由纵梁支撑在支座上。采用SOLID45单元划分，约束施加在纵梁底部节点上，三向约束，总是求解不成，警告如下：
*** WARNING *** CP = 659.250 TIME= 23:32:22
Smallest negative equation solver pivot term encountered at UZ DOF of
node 63196. Check for an insufficiently constrained model.
如果将横梁去掉即可求解，请教各位高手是什么原因？
*** WARNING *** CP = 659.250 TIME= 23:32:22
Smallest negative equation solver pivot term encountered at UZ DOF of
node 63196. Check for an insufficiently constrained model.
如果将横梁去掉即可求解，请教各位高手是什么原因？
