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Incompatibility between elements (ABAQUS Mesh error)

Incompatibility between elements (ABAQUS Mesh error)

Incompatibility between elements (ABAQUS Mesh error)

(OP)
Hello everyone,

I am doing a FE analysis with ABAQUS 6.9 of a notched specimen (fracture mechanics). In order to record the singularity at the crack tip I mesh the crack tip with collapsed elements. Because of this, my mesh contains regular quadratic elements and modified quadratic triangle elements.

So ABAQUS gives me a warning message:

The following parts or part instances contain both modified quadratic triangle elements and regular quadratic elements, which are incompatible.

Does this affect my solution? Is there any way I can record the crack singularity without this warning?

I attach an image of my mesh.

Thanks a lot for your help

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