On 25 February 2011 17:28, Bruno Chareyre <bruno.chare...@hmg.inpg.fr>wrote:
> > > Well, I have to disagree here. I think we need first to clearly define > > our equation, is it a linear or non linear one? > > It doesn't matter. If it is non-linear, you can linearize it by looking > at tangent stiffness. So, in the end the small oscillations that can > result in numerical instabilities are always ruled by something linear, > like: > Ok, thanks for pointing it out. Chiara > > $$a\ddot{X}+b\dot{X}+X=0$$ > > > We used this approach successfully for JF Jerier non-linear law (without > viscosity). > > Bruno > > _______________________________________________ > Mailing list: https://launchpad.net/~yade-dev > Post to : yade-dev@lists.launchpad.net > Unsubscribe : https://launchpad.net/~yade-dev > More help : https://help.launchpad.net/ListHelp >
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