Sliding and rolling dissipation in Cosserat plasticity

Papanicolopulos, S-A; Veveakis, E

dc.contributor.author	Papanicolopulos, S-A	en
dc.contributor.author	Veveakis, E	en
dc.date.accessioned	2014-03-01T01:37:05Z
dc.date.available	2014-03-01T01:37:05Z
dc.date.issued	2011	en
dc.identifier.issn	1434-5021	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21441
dc.subject	Cosserat continuum	en
dc.subject	Energy dissipation	en
dc.subject	Granular micromechanics	en
dc.subject	Plasticity	en
dc.subject	Rolling	en
dc.subject	Sliding	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Mechanics	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	Cosserat	en
dc.subject.other	Cosserat continuum	en
dc.subject.other	Dissipative mechanisms	en
dc.subject.other	Generalisation	en
dc.subject.other	Grain contacts	en
dc.subject.other	Grain surface	en
dc.subject.other	Granular micromechanics	en
dc.subject.other	Micro-mechanical	en
dc.subject.other	Sliding	en
dc.subject.other	Yield surface	en
dc.subject.other	Electron energy loss spectroscopy	en
dc.subject.other	Energy dissipation	en
dc.subject.other	Energy dissipators	en
dc.subject.other	Plasticity	en
dc.title	Sliding and rolling dissipation in Cosserat plasticity	en
heal.type	journalArticle	en
heal.identifier.primary	10.1007/s10035-011-0253-8	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s10035-011-0253-8	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	Based on micromechanical considerations at the level of grain contacts and taking into account the way in which kinematic and static quantities are introduced at grain surface and grain centre, we identify appropriate measures related to energy dissipation due to rolling and sliding between grains, within both a discrete and a Cosserat continuum description. This allows us, within the framework of Cosserat plasticity, to identify appropriate invariants and formulate simple forms of the respective yield surfaces. The resulting model is shown to be a multiple-yield-surface generalisation of the model by Mühlhaus and Vardoulakis (Géotechnique 37(3):271-283, 1987). By introducing separate and clearly identified rolling- and sliding-resistance parameters, the model allows for separate activation of the respective dissipative mechanisms. © 2011 Springer-Verlag.	en
heal.publisher	SPRINGER	en
heal.journalName	Granular Matter	en
dc.identifier.doi	10.1007/s10035-011-0253-8	en
dc.identifier.isi	ISI:000290676900004	en
dc.identifier.volume	13	en
dc.identifier.issue	3	en
dc.identifier.spage	197	en
dc.identifier.epage	204	en