Sociedad Española de Integridad Estructural
Grupo Español de Fractura

Sociedad Española de Integridad Estructural
Grupo Español de Fractura

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ACCURATE SIMULATION OF DELAMINATION GROWTH UNDER MIXED-MODE LOADING USING COHESIVE ELEMENTS WITH MODE-DEPENDENT PENALTY STIFFNESS

A.Turon  E.V. González  P. Maimí  P. Camanho  J. Costa    

Anales de la Mecánica de la Fractura, nº 27 . 2010 . Pág. -
Ver (.pdf): 112

Resumen: The cohesive zone model approach, in conjunction with a damage formulation has been used by many authors to simulate delamination using finite element codes. Most of these models available in the literature are developed for pure mode loading, and then extended to analyze mixed-mode loading situations. However, these models have not been validated correctly under mixed-mode loading conditions where an incorrect selection of the parameters of the model can result in inaccurate simulation predictions. To obtain accurate simulation results, the cohesive formulation previously developed by the authors has been modified. Mode-dependent penalty stiffness has been introduced in the formulation as well as the damage evolution law has been redefined. Different loading scenarios are simulated to validate the accuracy of the new formulation presented.

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AMADE, University of Girona Campus Montilivi, s/n. 17071 Girona, Spain
AMADE, University of Girona Campus Montilivi, s/n. 17071 Girona, Spain
AMADE, University of Girona Campus Montilivi, s/n. 17071 Girona, Spain
DEMec, Universidade do Porto Rua Dr. Roberto Frias 4200-465 Porto, Portugal
AMADE, University of Girona Campus Montilivi, s/n. 17071 Girona, Spain


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