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A Simple Model for the Simulation of Delamination in Fiber‐ReinforcedComposite Laminates under Mixed‐Mode Loading Conditions
Author(s) -
Balzani Claudio,
Wagner Werner
Publication year - 2005
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200510139
Subject(s) - delamination (geology) , materials science , composite laminates , composite material , finite element method , cohesive zone model , simple (philosophy) , cohesion (chemistry) , fiber pull out , work (physics) , composite number , structural engineering , interface (matter) , fiber , fracture (geology) , mechanical engineering , engineering , geology , contact angle , physics , paleontology , philosophy , epistemology , quantum mechanics , sessile drop technique , subduction , tectonics
For a reliable prediction of the mechanical behavior of unidirectional fiber‐reinforced composite laminates (FRCL), it is inevitable to take into account various damage and fracture mechanisms. In this work, delamination under arbitrary mixedmode loading conditions is examined in the framework of the finite element method. Delamination is assumed to be caused by failure of the resin‐rich area in the interface between two layers of FRCL's. In this work, a cohesive interface elementin terms of natural stress‐strain relationships which allows to describe the interlaminar mechanical behavior of FRCL's is introduced. The proposed model prevents the restoration of cohesion in the interface. The interpenetration of the crack faces is avoided by incorporating a simple contact algorithm. A representative numerical example shows the applicability of the proposed concept. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)