热分析求解时出错！！！

在进行稳态热分析时，总是提示下面的错误，请问各位有没有遇到过类似问题，问题最有可能出在哪，怎么解决的呢？
望高手指点，感激不尽！！！
*** ERROR *** CP = 52.484 TIME= 19:14:25
The value of TEMP at node 64098 is 3.986824628E+13. It is greater than
the current limit of 1000000. This generally indicates rigid body
motion as a result of an unconstrained model. Verify that your model
is properly constrained.

*** ERROR *** CP = 52.594 TIME= 19:14:34
*** MESSAGE CONTINUATION ---- DIAGNOSTIC INFORMATION ***
If one or more parts of the model are held together only by contact
verify that the contact surfaces are closed. You can use the CNCHECK
command to check the initial contact status in the SOLUTION module