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[Luc Sibille <question688544@xxxxxxxxxxxxxxxxxxxxx>]

Question #688544 on Yade changed:
https://answers.launchpad.net/yade/+question/688544

Luc Sibille proposed the following answer:
Hello,

I think question 2 can be seen as a real scientific question, in the 
sense that for a long time it has be assumed by many researchers that 
the softening after the peak was the consequence of the strain 
localization. That is why many phenomenological constitutive relations 
do not describe the softening after the peak.
However, it seems that with DEM softening after the peak may be obtained 
without localization (for instance with a low number of discrete 
elements limiting the occurrence of strain localization). If the latter 
is true it would mean that softening could be seen as a constitutive 
response of a granular material.
Nevertheless, I am sure there is a clear study around this question in 
the literature and probably it is still an open question... ?

Luc


-- 
Luc Sibille
Université Grenoble Alpes / IUT1 de Grenoble
Laboratoire 3SR: Sols, Solides, Structures, Risques

Tel lab.: +33 (0)4 76 82 63 48
Tel IUT: +33 (0)4 76 82 53 36

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