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[Luc Scholtès <question701785@xxxxxxxxxxxxxxxxxxxxx>]

Question #701785 on Yade changed:
https://answers.launchpad.net/yade/+question/701785

    Status: Open => Answered

Luc Scholtès proposed the following answer:
Hello,

1) The JCFPM model does not include the softening stage (weighted
decrease of the normal force once the maximum admissible force is
reached).

2) You should be able to observe a change in the emergent post-peak
behavior, from brittle to ductile, with the increase of the confining
pressure even though the interparticle force softening is not
implemented.

My first guess would be that your material is too "strong" so that it
remains brittle for the range of confining pressures you have tested.
Usually, The brittle-ductile transition occurs for confining pressures
approximately equal to the uniaxial compressive strength. What is the
UCS of your material? The combination of a high interactionRadius (1.5)
and a high tensile strength value (160e6) would lead to a very
strong/competent material in my experience.

Luc

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