1 elements in the adaptive mesh domain are distorting so much that
 they turn inside out. The elements have been identified in element
 set WarnElemAdaptMeshDistortStep3Inc69.

 ADAPTIVE MESH CONSTRAINTS CANNOT BE APPLIED IN THIS INCREMENT.  
           CONSIDER RERUNNING THE ANALYSIS WITH SMALLER TIME INCREMENTATION IN
           THIS STEP.

单元高度6um，磨损深度U2和单元高度一样就报错停止了