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[Jan Stránský <question255247@xxxxxxxxxxxxxxxxxxxxx>]

Question #255247 on Yade changed:
https://answers.launchpad.net/yade/+question/255247

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hi Henry,


>       How can I add the cohesion to this contact model?


You would have to write new Ig2, IGeom and Law2, probably also Ip2 and
IPhys classes. Currently the model evaluates forces dependeing on
overlapping volume, which is not extendabe to "tension" (like penetration
depth for spheres is).


> Futhermore, thers is a parameter "strength(=100)" in this model, and the
> description about this parameter in the document is  "Stress at whis
> polyhedra of volume 4/3*pi [mm] breaks.". Which is the mean of this
> parameter?
>

The parameter is used to split one polyhedral body into several smaller,
i.e. simulating crushing. see PolyhedraSplitter [1], it uses parameter
strength to determine if split the body or not.

cheers
Jan

[1]
https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.PolyhedraSplitter

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