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若直接設(shè)通用接觸，一開始就不收斂（有Displacement increment for contact is too big.的警告信息）；若使用面面接觸，同樣不收斂（Displacement increment for contact is too big.）；若使用面面接觸，并設(shè)置調(diào)整過盈，則開始計(jì)算時(shí)會(huì)直接將上板向上調(diào)整9mm至與模具接觸。

Too many attempts made for this increment。（這個(gè)是報(bào)錯(cuò)程序）下面的是出現(xiàn)的警告Displacement increment for contact is too big.

基于COHESIVE做水力壓裂時(shí)，在地應(yīng)力平衡分析步時(shí)，用fixed時(shí)說Fixed time increment is too large。程序直接報(bào)錯(cuò)。另一模型中的第一步也是fixed但未報(bào)錯(cuò)，兩個(gè)模型的初始應(yīng)力，孔隙壓力，材料屬性一模一樣，為什么第一步地應(yīng)力平衡會(huì)出現(xiàn)這樣的問題呢？求指教Job-COH3.zip

2.對(duì)分析主要對(duì)象添加塑性參數(shù)后，提交計(jì)算出現(xiàn)too many attempts made for this increment，1u-5u），查看MSG文件，有多個(gè)numerical singularity。 3.嘗試了很多辦法，包括修改初始增量步，最小增量步，提高Ia到10，接觸主從面互換，重新設(shè)置接觸，都不行。

Too many attempts made for this increment Abaqus/Standard Analysis exited with an error - Please see the message file for possible error messages if the file exists.

FOR P=0.0 0.100 CONTACT FORCE ERROR TOLERANCE FOR CONVERT SDI=YES 1.00 DISPLACEMENT COMPATIBILITY TOLERANCE FOR DCOUP ELEMENTS 1.000E-05

It is likely that either a displacement boundary condition has been applied directly onto a constraint equation or two or more constraint equations share too many degrees of freedom. ”查找節(jié)點(diǎn)ID號(hào)后發(fā)現(xiàn)有幾個(gè)是彈簧選擇的面上的節(jié)點(diǎn)

以下是status文件相關(guān)信息***WARNING: Master surface ASSEMBLY_SURF-CU-3 of contact pair # 5 contains facets with out-of-plane warping of at least 20.000 degrees in increment 22480.

要不出現(xiàn)這個(gè)Time increment required is less than the minimum specified要不出現(xiàn)這個(gè)Too many attempts made for this increment到底怎么調(diào)節(jié)分析步合適？

；The strain increment is so large that the program will not attempt the plasticity calculation at 27 points 報(bào)錯(cuò)信息：Too many attempts made for this increment

OP=NEW on *CONTACT is ignored when the general contact definition is specified as model data.

All output requests have been written for the last converged increment. Too many attempts made for this increment”請(qǐng)為各位前輩，問題出到哪里了？

CONTACT FORCE ERROR -18.3432E-09 AT NODE 270738 OF CONTACT PAIR (S2,S1) THE CONTACT CONSTRAINT ERRORS ARE WITHIN THE TOLERANCES.