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Level set use in XFEM
Mon, 2007-07-02 07:46 - Stefano Dal Pont
Hi,
I have recently approached XFEMs and I've got a few questions...first of all, it's not completely clear how to use the level-set method for crack detection and propagation...
I took a look at http://www.civil.gla.ac.uk/~bordas/xfemMatlab.html but the approach seems quite simplified and works fine only for cracks and meshes parallel to the x,y axis.
Later, I found out that LS should be calculated on nodes and then approximated using the shape functions...well, it's not so clear!
Could you give me some more explanations and give a rough algorithm for a practical implementation of the LS method (possibly including crack growth if I don't ask too much..)?
Thanks a lot for helping!!
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re: level sets for crack propagation
Stefano,
If you only want to simulate two-dimensional crack propagation, there is not a big advantage in using level sets. If you want to simulate crack growth in 3D, I would suggest you look at the papers by Moes, Gravouil, and Belytschko to get started. I'd be happy to help you out with any questions you have. There are also details provided in my XFEM short course notes .