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专业: 结构工程

[求助] ansys热结构耦合分析奇怪错误

大家好，我做的是热结构耦合分析，热分析结束后，在结构分析时出现下面警告和错误，有人遇到过吗？求大神指导。为什么我热分析能顺利进行，而在结构分析时说我温度超出限制，结构分析时不是没涉及温度么？
*** WARNING ***                      CP = 1591.812 TIME= 10:47:11
There are 6104 small equation solver pivot terms.  May be a
transitional effect caused by the Newton-Raphson logic.

*** ERROR ***                         CP = 1596.625 TIME= 10:47:37
The value of TEMP at node 16606 is 4.771374672E+31.  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 = 1596.719 TIME= 10:47:42
*** 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 check contact
status in the SOLUTION module for the converged solutions using
CNCHECK.

*** ERROR ***                         CP = 1596.781 TIME= 10:47:44
*** MESSAGE CONTINUATION ---- DIAGNOSTIC INFORMATION ***
Rigid body motion can also occur when net section yielding has
occurred resulting in large displacements for small increments of load
or when buckling has occurred.  You can plot the time history curve
for node 16606 in the TEMP direction to check for stiffness (slope of
the curve) approaching zero.

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