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I'm searching for info on pseudo arc-length continuation algorithm, but i can't find something that can guide me from the ground up.

I found a presentation which describes an iterative algorithm for calculating dx and dl, but it doesn't seem to work. I don't know how to calculate the last element in the right hand side vector. The equation from the presentation (i don't have the link any more, but i can search it again if you want) is:

(lamda_k - lamda_prev)^2 + |x_k - x(lamda_prev)|^2 - arc^2

How should i calculate arc?

If anybody has a comment / paper / tutorial / anything that describes the method in detail, i'd very glad to hear it.

Thanks in advance and forgive my english.

HellRaiZer

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# Pseudo arc-length continuation

**Physics Forums | Science Articles, Homework Help, Discussion**