Question #689498 on Yade changed: https://answers.launchpad.net/yade/+question/689498
Chareyre proposed the following answer: Hi, I would say what matters is your objective. If you want to approach a rate-independent stress-strain response then you have to check what rate does to the stress-strain response, define an objective measure of "error" and a value of how much error you accept, then go find the corresponding rate. Although I agree overall with Jerome's answer I would underline that inertial number makes no real difference, and the idea that there is something special happening near Iv=0.001 is flawn. 1/ It is like asking for which value of x, the function f=exp(-x) is negligibly small. "It depends what you call 'small' sir". 2/ The relation between Iv and the error depend on many parameters. For instace, there are structural rate effects which depends on the ratio of loading rate vs. P-waves velocity. The inertial number is independent of P-waves velocity and therefore it is insufficient to determine what a given rate means in terms of dynamics. Until now it is difficult (and dangerous) to try and avoid a minimal trial-and-error to check rate effects. It would be great to have a more general theory for this though. Cheers Bruno -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
