yade-users team mailing list archive

[Jan Stránský <question622071@xxxxxxxxxxxxxxxxxxxxx>]

Question #622071 on Yade changed:
https://answers.launchpad.net/yade/+question/622071

Jan Stránský posted a new comment:
> Is the reason that the stress calculation is approximate calculation?

oppositely, the reason is exact calculation :-) in general, stress may
be non-symmetric because the particle assembly is not in static
equlibrium from moment point of view

in "classical" mechanics, t_xy=t_yx holds under assumption of zero
rotation, you assume strain=symgrad(displacement) and you don't care of
antisym part anymore. In DEM, rotation and moments are important (in
"classical" continuum, you have forces, but no moments)... just a veeery
brief intro, have a look e.g. at [1] (1st google result of "Cosserat
continuum", see especially slide 15) or other similar materials. In
case, open a new question

cheers
Jan

[1]
http://alertgeomaterials.eu/data/school/2010/03%20Papamichos%20E%20Cosserat%20theory.pdf

-- 
You received this question notification because your team yade-users is
an answer contact for Yade.