Question #707022 on Yade changed:
https://answers.launchpad.net/yade/+question/707022
Status: Open => Answered
Luc Scholtès proposed the following answer:
Hello,
It would be good to know about those differences you mention (stiffness,
peak value, residual strength, ...) but I can already say this:
The JCFPM defines the equilibrium distance from the initial
interparticle centre to centre distance (computed from at the first
iteration of the simulation). The Cundall&Strack model (frictmat)
defines the equilibrium distance as the actual geometrical contact
(centre to centre distance - sum of radii).
Basically, the sample is stress free at the first iteration of a JCFPM
simulation.
Also, you can define long range interactions with the JCFPM: intR>1 will
create contacts between particles not geometrically in contact.
Luc
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