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A consistent geometrically non‐linear approach for delamination
Author(s) -
Wells G. N.,
de Borst R.,
Sluys L. J.
Publication year - 2002
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.462
Subject(s) - classification of discontinuities , finite element method , delamination (geology) , jump , displacement (psychology) , instability , structural engineering , mathematical analysis , mathematics , geometry , engineering , mechanics , physics , geology , psychology , paleontology , quantum mechanics , subduction , psychotherapist , tectonics
A new model is presented for the simulation of delamination in laminated composite materials. A key feature is that the material structure and the finite element mesh are uncoupled. The displacement discontinuities that arise during the delamination process are described mathematically using discontinuous functions. This leads naturally to a set of coupled equations for the continuous and the discontinuous parts of the response. Discontinuities can pass through solid finite elements arbitrarily, with the displacement jump continuous across element boundaries. The performance of the model is demonstrated for several problems of delamination and geometric instability. Copyright © 2002 John Wiley & Sons, Ltd.