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Modelling Intergranular Microfracture Using a Boundary Cohesive Grain Element Formulation

Journal Key Engineering Materials (Volumes 324 - 325)
Volume Fracture and Damage Mechanics V
Edited by M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz
Pages 9-12
DOI 10.4028/www.scientific.net/KEM.324-325.9
Online since November, 2006
Authors G.K. Sfantos, M.H. Aliabadi
Keywords Boundary Element Method (BEM), Grains, Intergranular, Micro-Fracture, Polycrystalline
Abstract In this paper, intergranular microfracture evolution in polycrystalline brittle materials is simulated using a cohesive grain boundary integral formulation. A linear cohesive law is used for modelling multiple microcracking initiation and propagation under mixed mode failure conditions, encountering the stochastic e=ects of the grain location, morphology and orientation. Furthermore, in cases where crack surfaces come into contact, slide or separate, fully frictional contact analysis is performed.
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