ABAQUS樁基計算不收斂問題,求問?
具體warning信息為:
Node 1300 instance soil-1 is common between the contact pair (assembly_soil-1_zhuang2-zs-sizhou, assembly_soil-1_soil-zhuang2-zs-sizhou). No constraint is formed for this node.
Warning message limit reached. No further warning messages will be reported.
Solver problem. Zero pivot when processing D.O.F. 1 of 49 nodes. The nodes have been identified in node set WarnNodeSolvProbZeroPiv_1_1_1_1_1.
The strain increment is so large that the program will not attempt the plasticity calculation at 44439 points
The plasticity/creep/connector friction algorithm did not converge at 2 points
Program is asked to invert a singular matrix
The strain increment is so large that the program will not attempt the plasticity calculation at 42610 points
諸如此類。。。。
我設置的樁和土體摩擦接觸,樁底和土tie約束。不知何故,無法收斂。























用節點集合去設置約束和接觸,這樣可以避免邊緣的節點同時參與約束和接觸,形成過約束。另外根據你的提示信息,可能是某些節點沒有納入到約束中,有單元應變很大導致無法收斂