最近在做一个关于非线性接触的实例。可无论我怎么调试，总是结果不收敛。并出现以下警告和错误，恳请哪位大侠或老师帮忙解答一下（我在论坛及其他地方看到过类似情况，但均没提出解决方法）。
①There are 5761 small equation solver pivot terms.
②The value of UX at node 11942 is 4686826.84. 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.
③If 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.
④Rigid 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 11942 in the UX direction to check for stiffness (slope of
the curve) approaching zero.
发表于 2009-9-22 08:17
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发表于 2009-9-22 08:25
楼主