包裹CFRP的鋼管混凝土柱可以計(jì)算出結(jié)果，去掉CFRP后反而第一增量步就無(wú)法收斂，提示

 ***WARNING: THE PLASTICITY/CREEP/CONNECTOR FRICTION ALGORITHM DID NOT CONVERGE 

             AT 8 POINTS

  ***NOTE: MATERIAL CALCULATIONS FAILED TO CONVERGE OR WERE NOT ATTEMPTED AT ONE 

          OR MORE POINTS. CONVERGENCE IS JUDGED UNLIKELY.這可能是哪里的問(wèn)題