000004769 001__ 4769
000004769 005__ 20141119144551.0
000004769 04107 $$aeng
000004769 046__ $$k2002-06-02
000004769 100__ $$aHentz, Sébastien
000004769 24500 $$aDISCRETE ELEMENT MODELLING OF CONCRETE AND IDENTIfiCATION OF THE CONSTITUTIVE BEHAVIOUR

000004769 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004769 260__ $$bColumbia University in the City of New York
000004769 506__ $$arestricted
000004769 520__ $$2eng$$aThe use of a 3D Discrete Element Method (DEM) is proposed to study concrete structures submitted to dynamic loading. The aim of this paper is the correct identification of parameters of the DEM model from usual test results to simulate elastic and inelastic deformation as well as fracture of concrete. A particular growing technique is used to set a densely packed assembly of arbitrarily sized spherical particles interacting together at their contact points, representing concrete. An important difference from classical DEMs where only contact interactions are considered, is the use of an interaction range, which allows the setting of an interaction between two elements not necessarily in contact. The SDEC model exhibits complex macroscopic behaviours such as strain softening, and fracture that arise from extensive microcracking throughout the assembly. The influence on the parameters identification of the assembly size distribution, of the packing, of different geometrical parameters and of the interaction range on the material behaviour is shown. The model produces a quantitative match of strength and deformation characteristics of concrete in terms of Young’s modulus, Poisson’s coefficient, and compressive and traction strengths. 

000004769 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004769 653__ $$aDistinct Element Method, concrete, elasticity, damage, fracture

000004769 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004769 720__ $$aHentz, Sébastien$$iDaudeville, Laurent$$iDonzé, Frédéric V.
000004769 8560_ $$ffischerc@itam.cas.cz
000004769 8564_ $$s454538$$uhttp://invenio.itam.cas.cz/record/4769/files/314.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004769 962__ $$r4594
000004769 980__ $$aPAPER