I am modeling the bending of a 3D composite. The laminate plies are imported from a coupled temp-disp static step to a new model as deformed parts with a predefined stress field. The bending step is a static general step as well. I want to simulate delamination as well, so I use the edit mesh feature to add offset solid layers with zero thickness (with no shared nodes), and assign a cohesive section and cohesive element type to them. These layers are tied to the surrounding plies. However, I am getting the error in the attached image. Any suggestions to overcome this error? Note: the plies are assembled as separate parts.
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if you operated the whole process correctly, the issue could be a numerical issue. Please try the followings:
1- use a tiny value, instead of zero, to see if it removes the errors.
2- if the issue persists, for the model with errors, choose one of the elements, say, 5390, find its connectivity, and corresponding nodes and their coordinates in the .inp file (elements ar e under *element, and nodes are under *node), and have a detailed check.
3- use a regular orphan mesh, and try the zero-offset insertion in CAE to make sure the operations are correct.
Regards, @kmao24
Thanks for your response.
for my level of knowledge, I think that I am doing the insertion process correctly.
1- I do not think this is correct as there will be intersections between the cohesive layer and the composite plies.
2- I have check one element, and it seems ok.
I tried the edit mesh tool>- insert cohesive seam and simulations starts. However, it stops around SDEG approaching max degradation value.
Any recommendations!!