急!! 请求 泥土摩擦接触 问题?

三寶

只有一步, 用CAX4R 和 CAX4P
*geostatic
*DLOAD
allel,  BZ, 8

接触方面用上:
*Surface Interaction, name=1
1.,
*Friction, elastic slip=0.02
0.3,
*Surface Behavior, pressure-overclosure=HARD
*Contact Pair, interaction=1, small sliding, type=surface to surface
SOIL, PILE

为什么用了以下的材料, 就出现问题4: :
*porous elastic
0.022,0.2
*clay plasticity
0.122,1,2.0833,1,1

如果只用了
*Elastic
2e+08, 0.2
就可以, 但我是要用上修正剑桥黏土模式的.

请问，应如何修改？
多谢～～


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

***WARNING: THE PLASTICITY/CREEP/CONNECTOR FRICTION ALGORITHM DID NOT CONVERGE
             AT 40 POINTS

***NOTE: MATERIAL CALCULATIONS FAILED TO CONVERGE OR WERE NOT ATTEMPTED AT ONE
          OR MORE POINTS. CONVERGENCE IS JUDGED UNLIKELY.


***ERROR: FIXED TIME INCREMENT IS TOO LARGE

三寶

还有那
40 点是指什么? 多谢!!

zhangmeng

自由度有问题，有问题的节点放到WarnNodeSolvProbZeroPiv_1_1_1_1_1.
还有材料塑性有问题！
看看诊断信息
请务必看清错误提示