Hi,

I'm still stuggling with this problem. Using an in-house matlab code, I added the cohesive elements in the triangle mesh grid that had been produced in Abaqus prior. An error message lists as:

THE NODE NUMBERING MIGHT NOT BE CORRECT FOR ELEMENT *** INSTANCE ***

I double checked all the cohesive elements with the error message and didn't find any problem with them. They are all connected by 4 nodes in a counter-clockwise direction. And I also tried the ways proposed by all you and it is still unresolved.

Is this somehow related to the way that the triangle mesh was made? Because the sweep technique seems not to be activated for a 2D complex region with the curved geometry.

nothing to do with the stacking. to solve the problem, u should give a thickness to the cohesive layer in the curved regions. generally there is no problem with the straight regions

Hi,

Please check the stacking sequence of all your cohesive elements. All elements should have the same stacking sequence. Also flipping the sweep direction during meshing solves the "node numbering might not be correct" error for me.

hi steven,

ı am struggling with the same problem.

i use python to build the zero thickness cohesive elements, some cohesive elements is fine but the others have the same problem as you.

have you solved this problem?

hi frank,

i was able to check the answer at last.

but the answer is not a complete answer. problem is still open !

thanks for your support

regards

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Node numbering error with zero thickness cohesive elements

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Ruhr-University
Bochum
Germany

hi steven,

ı am struggling with the same problem. i know it is somehow related to sweep path, but could not get the exact answer.

have you been able to get the answer?