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[Klaus Thoeni <question228778@xxxxxxxxxxxxxxxxxxxxx>]

Question #228778 on Yade changed:
https://answers.launchpad.net/yade/+question/228778

Klaus Thoeni proposed the following answer:
Hi guys

I think we had a similar discussion here:

https://lists.launchpad.net/yade-dev/msg08163.html

@ Anton: so I don't think it's a bug.

Klaus

On Mon, 13 May 2013 11:56:12 PM Kneib François wrote:
> New question #228778 on Yade:
> https://answers.launchpad.net/yade/+question/228778
> 
> Hi,
> 
> I found something weird in the source code into
> Ig2_Facet_Sphere_ScGeom::go(). Usually when there is a contact between a
> sphere and a surface (wall, box ...), the contact geometry contains
> radius1=radius2=rs. (assuming rs is the sphere radius). So the stiffnesses
> of the contact are computed like if there is two spheres having the same
> radius.
> 
> In Ig2_Box_Sphere_ScGeom::go :
>           scm->radius1 = s->radius;
>           scm->radius2 = s->radius;
> 
> In Ig2_Wall_Sphere_ScGeom::go :
>           ws->radius1=ws->radius2=radius;
> 
> But into Ig2_Facet_Sphere_ScGeom::go, there is :
>           scm->radius1 = 2*sphereRadius;
>           scm->radius2 = sphereRadius;
> 
> Don't you think this is a mistake ?

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