***WARNING: Temperature at 1 nodes has fallen below absolute zero. Increment
will be attempted again with a new time increment.
***WARNING: TEMPERATURE AT NODE 9250 INSTANCE Weld Instance (-285.91) HAS
FALLEN BELOW ABSOLUTE ZERO (-273.10). INCREMENT WILL BE ATTEMPTED
AGAIN WITH A TIME INCREMENT OF 7.95898E-03
请问高手这是什么原因,很着急,请大家不吝赐教啊
多谢大家