A précis of some recent developments in computational failure mechanics
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Authors
De Borst, R
Askes, H
Gutierrez, MA
Remmers, JJC
Wells, GN
Abstract
A concise overview is given of various numerical methods that can be used to analyse localisation and failure in engineering materials. The importance of the cohesive-zone approach is emphasised and various ways of incorporating the cohesive-zone methodology in discretisation methods are discussed. Next, a simple continuum damage (decohesion) model which preserves well-posedness of boundary value problems via gradient enhancement is recalled. Using a meshless method the importance of the higher-order gradient terms is assessed. Finally, the model is used in finite element reliability analyses to quantify the probability of the emergence of various possible failure modes.
Description
Keywords
localisation, cohesive zones, discontinuities, meshless methods, random imperfections
Journal Title
International Journal of Numerical Methods in Heat and Fluid Flow
Conference Name
Fifth World Congress on Computational Mechanics (WCCM V)
Journal ISSN
0961-5539
Volume Title
14
Publisher
MCB University Press