{"id":357149,"date":"2024-03-14T17:36:12","date_gmt":"2024-03-14T17:36:12","guid":{"rendered":"\/forum\/forums\/topic\/the-solver-engine-was-unable-to-converge-on-a-solution-for-the-nonlinear-problem-7\/"},"modified":"2024-03-14T17:44:49","modified_gmt":"2024-03-14T17:44:49","slug":"the-solver-engine-was-unable-to-converge-on-a-solution-for-the-nonlinear-problem-7","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/the-solver-engine-was-unable-to-converge-on-a-solution-for-the-nonlinear-problem-7\/","title":{"rendered":"The solver engine was unable to converge on a solution for the nonlinear problem"},"content":{"rendered":"

Hi, I am trying to perform compression test upto to a certain percentage of strain. My material is ABS and using bilinear material model. I am doing static structural analysis.
These are the errors I am encountering:
1. “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.”
2. “Element 31 located in Body “Solid Body 1(External Model)” (and maybe other elements) has become highly distorted.  You may select the offending object and\/or geometry via RMB on this warning in the Messages window.  Excessive distortion of elements is usually a symptom indicating the need for corrective action elsewhere.  Try incrementing the load more slowly (increase the number of substeps or decrease the time step size).  You may need to improve your mesh to obtain elements with better aspect ratios.  Also consider the behavior of materials, contact pairs, and\/or constraint equations.  If this message appears in the first iteration of first substep, be sure to perform element shape checking. Named Selections for the offending element can be created via the Identify Element Violations property on the Solution Information Object.”<\/p>\n

And following are the warnings:
1. The solution failed to solve completely at all time points. Restart points are available to continue the analysis. 
2. One or more objects may have lost some scoping attachments during the geometry update. You can identify these tree objects by activating the Scoping Wizard in the Selection Toolbar, or by filtering the tree using the Scoping option set to Partial.<\/p>\n

Earlier I tried my increasing the no.of sub- steps. But still I got the same error.
I have attached the screenshots of my simulations.
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