焊接应力间接法模拟求助

chibao

[img]file:///D:/My%20Documents/Tencent%20Files/1359073472/Image/PMN[~2ZZ0L~1NCNAKTRQ05B.jpg[/img]

chibao

这是没有打开大变形选项的结果，程序可以运行
要是打开大变形选项则会出错
*** ERROR ***                           CP =     676.859   TIME= 20:12:41
One or more elements have become highly distorted.  Excessive           
distortion of elements is usually a symptom indicating the need for     
corrective action elsewhere.  Try incrementing the load more slowly     
(increase the number of substeps or decrease the time step size).  You  
may need to improve your mesh to obtain elements with better aspect     
ratios.  Also consider the behavior of materials, contact pairs,        
and/or constraint equations.  If this message appears in the first      
iteration of first substep, be sure to perform element shape checking.  
                                                                        
青虬(1359073472) 22:51:34
求大家热心讨论分析原因