Reply To: Defining a very low cohesive soil using Mohr-Coulomb

[ali.ismail]

 

Thank you for your reply.

The model is 2D and the analysis is already plane strain.

Actually, everything works well when the friction angle is 30 degrees and the cohesion is 0,01 Mpa. But when I reduce them to 15 for the friction angle and 0,001 Mpa for the cohesion I get in addition to the error also 2 warnings, which are:

The error:

”The solver engine was unable to converge on a solution for the nonlinear problem as constrained. Please see the Troubleshooting section of the Help System for more information.”

The warnings:

”The unconverged solution (identified as Substep 999999) is output for analysis debug purposes. Results at this time should not be used for any other purpose.”

”One or more objects may have lost some scoping attachments during the geometry update. You tun identify these tree objects by filtering the tree using the Scoping option set to Partial.”

 

The last one I also get when the angle is 30 and the cohesion is 0,01 Mpa. 

 

I would like to know if there are other possibilities for the cause of the error ?