求助！！急！！！在线等

hit3034

***WARNING: SOLVER PROBLEM.  ZERO PIVOT WHEN PROCESSING A (TIED) CONTACT
             CONSTRAINT D.O.F. 1 FOR SLAVE NODE 147300 INSTANCE PART-1-1.  THIS
             MAY BE DUE TO THE UNIT USED FOR THE DISPLACEMENT DIFFERS BY MORE
             THAN 10 ORDER OF MAGNITUDE THAN THE UNIT USED FOR THE MATERIAL
             STIFFNESS.  IF THIS IS THE CASE, PLEASE USE A DIFFERENT UNIT
             SYSTEM.
OVERCONSTRAINT CHECKS:
An overconstraint was detected at one of the Lagrange multipliers associated
with contact slave node 147300 INSTANCE PART-1-1. There are multiple constraints applied directly
or chained constraints that are applied indirectly to this node.
A list of nodes and chained constraints between these nodes that most likely lead
to the detected overconstraint can be printed out to the message file by including
*constraint controls, print=yes in the input file.


***WARNING: Solver problem. Zero pivot when processing D.O.F. 1 of 16 nodes.
             The nodes have been identified in node set
             WarnNodeSolvProbZeroPiv_1_1_1_1_1.

                17394 SEVERE DISCONTINUITIES OCCURRED DURING THIS ITERATION.
                13004 POINTS CHANGED FROM CLOSED TO OPEN
                 4390 POINTS CHANGED FROM SLIPPING TO STICKING

               CONVERGENCE CHECKS FOR SEVERE DISCONTINUITY ITERATION     1

   MAX. PENETRATION ERROR -0.963702 AT NODE PART-1-1.148405 OF CONTACT PAIR
   (ASSEMBLY_DAMPBAR2_BOTTOM_SUR_2,ASSEMBLY_DAMPBAR1_UP_SUR_2)
   MAX. CONTACT FORCE ERROR -3.13875E+009 AT NODE PART-1-1.148146 OF CONTACT
   PAIR (ASSEMBLY_DAMPBAR2_BOTTOM_SUR_3,ASSEMBLY_DAMPBAR1_UP_SUR_3)
          PENETRATION ERROR TOO LARGE COMPARED TO DISPLACEMENT INCREMENT.


这些错误是什么意思？我该如何调整？？？

[ 本帖最后由 hit3034 于 2008-1-18 17:30 编辑 ]

bookup

貌似你的模型出现了过约束

zhangmeng

接触也是一种约束呀