三维基坑开挖模拟碰到的问题 [复制链接]

自己做的一个三维基坑开挖的模拟，建模完了进行计算的时候出现这个问题


SEVERITY  : WARNING
ERROR CODE: /DIANA/LB/EL30/0093
ERRORMSG.W: Results of your calculation may be inaccurate.
One of the angles between edges at node 9568 of element 20613 is
less than 1 degree or larger than 179 degrees.

SEVERITY  : WARNING
ERROR CODE: /DIANA/LB/EL30/0093
ERRORMSG.W: Results of your calculation may be inaccurate.
One of the angles between edges at node 10067 of element 21119 is
less than 1 degree or larger than 179 degrees.

SEVERITY  : WARNING
ERROR CODE: /DIANA/LB/EL30/0093
ERRORMSG.W: Results of your calculation may be inaccurate.
One of the angles between edges at node 10566 of element 21625 is
less than 1 degree or larger than 179 degrees.

不知道是哪里的问题，请问有没有人碰到过类似的？

图片:未命名.jpg

网格划分不好，检查一下下有无自由面 线
划分网格之前，做好删除重复线，交叉分割，检查短线小面或合并线等工作。具体问题可去midas官方论坛提问。http://www.midasuser.cn/bbs/forum-44-1.html

某一步没有收敛或者收敛标准较低，而继续计算，最终结果误差很大