Arc Length Method in cohesive forces modeling

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Hi, every one, I have a problem of snap back curve of a crack point advancement. At a certain value of sigma (the applied force), at y axis, and crack propogation, at x axis. as it shows in following capture; the snap-back shows when sigma increases, the crack advances. How to implement the Arc Length method on COMSOL to control the charge increasing and the displacement increasing.



1 Reply Last Post 24.05.2024, 08:45 GMT-4
Henrik Sönnerlind COMSOL Employee

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Posted: 3 weeks ago 24.05.2024, 08:45 GMT-4

I think you should first try to adapt the method used in

https://www.comsol.com/model/postbuckling-analysis-of-a-hinged-cylindrical-shell-10257

Introduing an arc length method is more complicated, but here is an example for comparison:

https://www.comsol.com/model/postbuckling-analysis-using-an-incremental-arc-length-method-119001

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Henrik Sönnerlind
COMSOL
I think you should first try to adapt the method used in Introduing an arc length method is more complicated, but here is an example for comparison:

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