000011396 001__ 11396
000011396 005__ 20141205155906.0
000011396 04107 $$aeng
000011396 046__ $$k2008-10-12
000011396 100__ $$aQin, J.M.
000011396 24500 $$aNumerical Study of Localized Deformation in Granular Materials by Discrete Element Method

000011396 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011396 260__ $$b
000011396 506__ $$arestricted
000011396 520__ $$2eng$$aGranular materials exhibit very complex behavior under external load. The macro- and micro-mechanical characteristics of granular assembly are strongly dependent on the properties of the constituent individual particles. The objective of this paper is to explore the deformation in microscale using discrete element method (DEM). Quasi-static biaxial compression test is carried out to investigate the structured deformation pattern. The simulation results show that the micro-scale deformation is nonuniform but not random or unrelated. The localized deformations represented by slip deformation in local void cells appear as microbands at small strain and shear bands at large strain. During the biaxial compression, the negative slip occurs in the neighboring regions of elastic unloading and plastic flow can occur along a plane of discontinuity in the velocity gradient field.

000011396 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011396 653__ $$agranular materials, discrete element method, slip deformation, micro-band, shear band

000011396 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011396 720__ $$aQin, J.M.$$iLu, L.$$iWang, G.X.
000011396 8560_ $$ffischerc@itam.cas.cz
000011396 8564_ $$s198975$$uhttp://invenio.itam.cas.cz/record/11396/files/04-02-0084.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 04-02-0084.
000011396 962__ $$r9324
000011396 980__ $$aPAPER