求教，abaqus中微米尺度的单位怎么识别？

abaqus初级用户

最近小弟在对表面粗糙形貌的接触进行仿真，由于粗糙表面的尺寸为微米，刚开始我用毫米对应的单位跑通后，当我把他的单位统一成微米后abaqus一直警告：There is zero FORCE everywhere in the model based on the default criterion. please check the value of the average FORCE during the current iteration to verify that the FORCE is small enough to be treated as zero. if not, please use the solution controls to reset the criterion for zero FORCE.我怀疑是我的弹性模量等参数转换到微米级别太小以致于abaqus直接当做零，请问大神们怎么解决这个问题？

abaqus初级用户

有人吗？