Quantcast
Channel: Latest Discussions - COMSOL Forums
Viewing all articles
Browse latest Browse all 26527

Define Young's Modulus as a piecewise function dependent on strain

$
0
0
I'd like to define a new material with a nonlinear Young's modulus as a piecewise function dependent on strain. I've defined the piecewise function under Global Definitions, but I'm confused as to what I should make the argument - does Comsol have a strain variable that is independent of direction? Right now all I can find are the principal strains (solid.ep1, solid.ep2, solid.ep3), and since the material should be isotropic, I just want to define E as one general function dependent on strain. Also, once I have this piecewise function defined with the argument as strain, can I just input this function as a user-defined Young's modulus (e.g. E = pw1(strain))? Please let me know if I am on the wrong track - if there is a different, simpler way of defining E.

Viewing all articles
Browse latest Browse all 26527

Trending Articles