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[chiara modenese <c.modenese@xxxxxxxxx>]

Hi Vaclav,

just a curiosity;) I have been reading your paper "Discrete continuum models
and their implementation" (good material, btw) and I come over the
definition of normal strain once particles overlap. May I ask you if this is
a proper definition? Are not we talking about rigid bodies, are we? I can
see that the overlap accounts for a sort of deformation, but can we really
define a normal or shear strain dealing with rigid bodies?

Thanks for your answer,
Chiara