Reply To: Problems with meshing in static analysis

[mjmiddle]

A result picture is not very usefull without some legend and description. I don't know what the above picture is trying to show. Is it deformation, Newton Raphson residuals, stress? What is the scaling? At high scaling value for any result can make things look weird. It's always best to look at true scale as a reference first, then use a larger scaling factor to make out better what's happening.

There are probably fillet faces here nicely running in certain directions, and you could probably set a "Face Meshing" control to get a mapped mesh if they are 4-sided. You may need to set edge sizings to set same number of divisions on opposite sides of the face. This will get you nicely running grid lines, with high quality quad elements. But I will note this issue doesn't look like a problem of the mesh quality.

Look at warnings and errors during the iterations in the Solution Information. Especially what is the final error causing the analysis to terminate? Are there no substeps converged? Or do you have partial solution where you can view stress/deformation until the time when it stops running? In a partially converged solution, the end time may show something but it's not realistic. Just view the results for converged substeps. It is also possible you have a small stress/strain slope for the plastic portion of the bilinear material, and the material is just deforming quickly once in that plastic zone. Check some probes for stress values. Also the plastic slope of the bilinear material should be positive and non-zero.