隧道开挖中的 错误怎么解决

zjq4107

正在做一个二维的隧道开挖模拟，第一步的地应力平衡能收敛，一设第二步开挖影响的第一步也不收敛了，还出现了以下警告内容，不知道怎么解决，此问题已困扰将近一个月了，网格画的也么警告什么的，不知道错误怎么改正，请大侠们帮忙解决啊


The dilation angle is small or zero. The value will be set to 0.10000

A geostatic procedure with maximum displacement tolerances is supported only for the following materials: elastic, porous elastic, extended cam-clay plasticity model and mohr-coulomb plasticity model. In general, the use of other materials with this procedure may lead to poor convergence or no convergence of the analysis.

In step 2, removal specified for element 178 instance tuti-1 is redundant and ignored. This element is already inactive. This message will be printed a maximum of 10 times.
.......
In step 2, removal specified for element 282 instance tuti-1 is redundant and ignored. This element is already inactive. This message will be printed a maximum of 10 times.
In step 2, removal specified for element 392 instance tuti-1 is redundant and ignored. This element is already inactive. This message will be printed a maximum of 10 times.
There are 3 unconnected regions in the model.
The strain increment is so large that the program will not attempt the plasticity calculation at 1424 points
.......................
The strain increment is so large that the program will not attempt the plasticity calculation at 1424 points

bananaliuchao

上传inp或cae，你这样问谁能帮你

zjq4107

2# bananaliuchao

zjq4107

inp文件已上传，哪位前辈帮帮忙看看，最近遇到了这个问题The plasticity/creep/connector friction algorithm did not converge at 10 points，求解答，

hanmumu

zjq4107 发表于 2011-3-18 08:22
inp文件已上传，哪位前辈帮帮忙看看，最近遇到了这个问题The plasticity/creep/connector friction algorit ...

你的问题解决了么，我跟你的问题一样，求教qq2507842009

wbustianca666

这表明你第二步分析步没有把要激活的单元在开始的时候杀死