新手求助：MATERIAL CALCULATIONS FAILED TO CONVERGE

wxbmcswxbmcs

我是新手，请教各位一个问题
我的计算总是在固定的时间增量步数量上出错，比如在计算中我如果设置初始时间增量步为0.01，在算到0.035的时候会出现不收敛，如果设置初始时间增量步为1e-10，则在计算到3.5e-10的时候不收敛，其他的初始增量步设置也是一样的，总是在第四步不收敛，请问这是怎么回事啊？
错误信息是
***WARNING: THE STRAIN INCREMENT HAS EXCEEDED FIFTY TIMES THE STRAIN TO CAUSE
             FIRST YIELD AT 935 POINTS

***WARNING: THE STRAIN INCREMENT IS SO LARGE THAT THE PROGRAM WILL NOT ATTEMPT
             THE PLASTICITY CALCULATION AT 85 POINTS

***WARNING: EXCESSIVE DISTORTION AT A TOTAL OF 5524 INTEGRATION POINTS IN
             SOLID (CONTINUUM) ELEMENTS


***NOTE: ELEMENTS ARE DISTORTING EXCESSIVELY. CONVERGENCE IS JUDGED UNLIKELY.


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


***ERROR: TOO MANY ATTEMPTS MADE FOR THIS INCREMENT
求问这到底是为什么啊？谢谢了

wxbmcswxbmcs

求大神帮助啊，我的材料是这样的
*Material, name=Nb3Sn
*Elastic
1.35e+11, 0.3
*Material, name=bronze
*Elastic
8.9749e+10, 0.34
*Plastic, hardening=COMBINED, number backstresses=1
4.692e+07,        0
5.769e+07,        0.000833460131000237
6.769e+07,        0.00127878805138753
8.000e+07,        0.00202186789590151
9.077e+07,        0.00281495540398643
10.000e+07,        0.00410536667902202
11.077e+07,        0.00564398102607314
12.000e+07,        0.00787872629713258
13.000e+07,        0.0106600383129473
14.077e+07,        0.0141867242305749
15.077e+07,        0.0184590899243221
*Material, name=copper
*Density
8920.,
*Elastic
8.0633e+10, 0.338
*Plastic
9.000e+07,        0
10.000e+07,        0.00445327907790443
10.923e+07,        0.00638981360174953
11.923e+07,        0.00887291486938093
12.923e+07,        0.0119524376081853
14.000e+07,        0.0160258431941557
15.000e+07,        0.0211431392928010

悄然而去

遇到同样的问题，请问楼主问题是怎样解决的？？？？

吴俊可01

悄然而去 发表于 2016-5-22 14:36
遇到同样的问题，请问楼主问题是怎样解决的？？？？

请问你解决这个问题了吗 我也遇到了MATERIAL CALCULATIONS FAILED TO CONVERGE OR WERE NOT ATTEMPTED AT ONE OR MORE POINTS. CONVERGENCE IS JUDGED UNLIKELY

wxj964325286

楼主的问题解决了吗？