2026-04-05T12:44:05Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/1886962025-07-16T22:31:13Zcom_2072_1033col_2072_452949

Discrete element model for brittle materials Koval, G. Le, B.D. Chazallon, C. Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits Finite element method Computational methods in mechanics Particle methods (Numerical analysis) rupture, discrete element method, brittle materials Elements finits, Mètode dels We adopt the discrete element method (DEM) to study the fracture behavior of brittle materials. We propose an approach which relates crack initiation to crack growth. The material consists of a set of particles in contact, which allows us to derive an expression for the stress intensity factor as a function of the contact forces and displacements. A classical failure criterion, based on the material’s toughness, is then adopted for the analysis of crack propagation, represented by the loss of cohesion forces between particles. Afterwards, we apply our discrete criterion to uncracked materials under homogenous stress conditions, obtaining a Rankine like behavior. The work results in a simple discrete model which is totally compatible to continuum mechanics, where no calibration tests are required, in contrast to most of discrete approaches. 2013 Conference report Open Access CIMNE