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Re: [Question #668315]: mininum timesteps after change to calculate the convergene accuracy

 

Question #668315 on Yade changed:
https://answers.launchpad.net/yade/+question/668315

    Status: Answered => Open

Luc OGER is still having a problem:
Dear Jerome,

When I tilted the gravity field, the full simulation needs 'some timesteps" before giving a new correct unbalancedforce calculation (otherwise the threshold test is immediatly still valid); checking every 500 steps will produce the same problem of initial recalculation of the new equilibrium of all the forces. 
so this is the reason of the waiting of 5000 timesteps BEFOREchecking the unbalance, but it looks like that it is  too small when I check the quality of the results!

so your comment about "you can use plenty of other values instead of 500" is what exactly I was looking for : how to approach the correct order of magnitude without doing a lot of test runs depending of the number of spheres, the friction coefificent, the stiffness and so on....
doing that at random is right now a waste of time.

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