请教一个问题

yuanzhishui

我的文档出现错误
Model errors exist - file D:\chf\ki.dat has not been created.
Please resolve conditions indicated by ERROR or ALERT
messages given above.
***INPUT ERROR: Material
               
                 Material 3 assigned to element 941 has a different model type to that of
                 the default material, 11, for element group 11.

zstqq

看不懂，能具体说一下操作过程吗？