Question #685523 on Yade changed:
https://answers.launchpad.net/yade/+question/685523
Status: Open => Answered
Jan Stránský proposed the following answer:
Hello,
see [1] for more details.
1) and 3) yes
2) relKnSoft is a factor to reduce the **tangent** (not elastic, since
plasticity is involved) modulus of the bond in compression.
Elastic modulus remains unchanged (visible for unloading).
4)
> the stress-strain relationship is linear elastic at the beginning
yes
> then what will happend to the curve? is there a strain limit after
which the bond will be damaged?
no, in compression the strain is not limited. The **elastic** strain is
limited, followed by plasticity (perfect, with hardening or with
softening). But no damage.
cheers
Jan
[1]
https://www.researchgate.net/publication/45194493_Cohesive_Particle_Model_using_the_Discrete_Element_Method_on_the_Yade_Platform,
section 3
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