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登錄若直接設通用接觸,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,并設置調整過盈,則開始計算時會直接將上板向上調整9mm至與模具接觸。
基于COHESIVE做水力壓裂時,在地應力平衡分析步時,用fixed時說Fixed time increment is too large。程序直接報錯。另一模型中的第一步也是fixed但未報錯,兩個模型的初始應力,孔隙壓力,材料屬性一模一樣,為什么第一步地應力平衡會出現這樣的問題呢?求指教Job-COH3.zip
Too many attempts made for this increment。(這個是報錯程序)下面的是出現的警告Displacement increment for contact is too big.
2.對分析主要對象添加塑性參數后,提交計算出現too many attempts made for this increment,1u-5u),查看MSG文件,有多個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

以下是status文件相關信息***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.
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. ”查找節點ID號后發現有幾個是彈簧選擇的面上的節點

要不出現這個Time increment required is less than the minimum specified要不出現這個Too many attempts made for this increment到底怎么調節分析步合適?
;The strain increment is so large that the program will not attempt the plasticity calculation at 27 points 報錯信息: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”請為各位前輩,問題出到哪里了?
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