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[Anton Gladky <question214773@xxxxxxxxxxxxxxxxxxxxx>]

Question #214773 on Yade changed:
https://answers.launchpad.net/yade/+question/214773

    Status: Open => Answered

Anton Gladky proposed the following answer:
Hi,

2012/11/20 Christian Sommerfeld <question214773@xxxxxxxxxxxxxxxxxxxxx>:
> Does yade calculate the motion independently from the force?

https://www.yade-dem.org/doc/formulation.html#motion-integration


> Because the algorithm of the scGeom doesn't need any force:

ScGeom is a class for __geometry__ calculation. It has nothing to do
with the force.

> Furthermore i'm interested in how yade calculate the velocity and
position if there isn't a contact anymore?

Body can have velocities and forces, acting on it, even without any contact.
Imagine a free fall of a sphere. Newtonintegrator cares about that.

> Is the NewtonIntegrator also independently from the forces of the
contact law?

What you mean "independently"? It is a class/"engine" which handles motion
integration.

> It isn't that easy to find in the yade-cade.

Well, if you are not going to be a "core developer", you do not need
to read the code.
BTW the code of yade is relatively easy to read. It is good
structured, nothing superfluous. Have a look at other codes :)


Cheers,

Anton

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