fracture energy

Asked by 403175147 on 2014-10-09

Hi all teachers
     I'm a newcomer in Yade, and I'm trying to model rock failure. Can YADE calculate the rock damage fracture energy? how to do it?

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2014-10-09
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2014-10-09
Jérôme Duriez (jduriez) said : #1

Hello,

For rock modelling, you might use the "JCFpm" model, see [1] and associated "JCFpm" classes. Basically it is a bonded particle model, similar to the one of Potyondy [2] that exists in ITASCA code (with some significant differences, though).

Using this model, you might focus of elastic energy loss for local interactions, as damage occurs throughout the model, if this is your question. Note that for what concerns localized damage (crack propagation) fracture toughness and associated surface energy are size dependant in JCFpm model, as in Potyondy's one (see [2])

[1] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.Law2_ScGeom_JCFpmPhys_JointedCohesiveFrictionalPM
[2] http://www.sciencedirect.com/science/article/pii/S1365160904002874

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