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Greetings, Colleagues!
When I defined the interaction between a rivet and a hole in Abaqus (the contact between them was previously defined as tie contact), I ran into a stress-singularity problem, and as the element number increased, the maximum von Mises stress increased as well. This puzzles me after multiple attempts, including filleting the hole edges. Furthermore, the model did not converge when I changed the tie contact to the penalty contact. Is there any way to resolve the problem?

CAE Assistant in Social Media Abaqus   contact   interaction   ResearchGate   stress
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Hello,

You could use the Explicit solver to avoid convergence issues. If you want to know more about Standard and Explicit solvers, refer to this link: https://caeassistant.com/blog/abaqus-standard-or-abaqus-explicit/

If you need to fix these two parts (hole and rivet), use the tie constraint; otherwise, choose any other interaction that depends on your model, like surface-to-surface contact.

Also, you could check this link to learn more: https://caeassistant.com/product/abaqus-for-beginners-mechanical-engineering-copy/

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