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Numerical modeling of brittle fracture in porous CFC‐materials
Author(s) -
Piat Romana
Publication year - 2006
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200610076
Subject(s) - brittleness , materials science , fracture mechanics , bending , fracture (geology) , finite element method , porosity , composite material , three point flexural test , stress (linguistics) , brittle fracture , porous medium , numerical modeling , structural engineering , mathematics , engineering , linguistics , philosophy , statistics
Abstract Both energy and stress criteria are necessary conditions for fracture but neither the one nor the other is sufficient. A combination of these criteria is proposed in [1]. This combined criterion is used for numerical simulation of crack propagation by the 4‐point bending test in porous materials. Examples of such materials are carbon‐carbon composites (CFC) [2, 3]. Micrographs of the cross‐sections of these materials are used for FEM modeling of the crack propagation on the basis of the proposed criterion. Results of the numerical modeling are compared with experimental results. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)