Learning Forum

[shahria]

Hello, 

 

I am working on a transient structural tensile test of unidirectional fiber composite RVE model where the Three Network Model(TNM) has been used for the matrix part. I am consistently getting this error termination showed in the 1st picture when the model reaches around 6 percent strain. I am using solid185 tetrahedral 4 node elements. I couldn't solve the issue by refining mesh, changing loading steps or some non-linear analysis settings. While troubleshooting the issue I received the message in solver output showed in the 2nd picture where the valid table options for TNM are mentioned. In the APDL documentation I could not find anything about the tbopt=9 or material convergence tolerances applicable to TNM. Besides, there is no such option available in Workbench Engineering Data. Can anybody please provide any information about this tbopt=9 table option? I am assuming that adjusting the tolerance parameters available under this option might solve my issue. I would also appreciate any other insights and suggestions regarding this issue. Thanks in advance.