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Simulation of Delamination Propagation in Composites Under High-Cycle Fatigue by Means of Cohesive-Zone Models

A damage model for the simulation of delamination propagation under high-cycle fatigue loading is proposed. The basis for the formulation is a cohesive law that links fracture and damage mechanics to establish the evolution of the damage variable in terms of the crack growth rate dA/dN. The damage state is obtained as a function of the loading conditions as well as the experimentally-determined coefficients of the Paris Law crack propagation rates for the material. It is shown that by using the constitutive fatigue damage model in a structural analysis, experimental results can be reproduced without the need of additional model-specific curve-fitting parameters

© NASA TP Technical Reports, 2006, núm. 214532

National Aeronautics and Space Administration

Author: Turon Travesa, Albert
Costa i Balanzat, Josep
Camanho, Pedro Manuel Ponces Rodrigues de Castro
Dávila, Carlos G.
Date: 2006 December
Abstract: A damage model for the simulation of delamination propagation under high-cycle fatigue loading is proposed. The basis for the formulation is a cohesive law that links fracture and damage mechanics to establish the evolution of the damage variable in terms of the crack growth rate dA/dN. The damage state is obtained as a function of the loading conditions as well as the experimentally-determined coefficients of the Paris Law crack propagation rates for the material. It is shown that by using the constitutive fatigue damage model in a structural analysis, experimental results can be reproduced without the need of additional model-specific curve-fitting parameters
Format: application/pdf
Citation: 008229
Document access: http://hdl.handle.net/10256/8244
Language: eng
Publisher: National Aeronautics and Space Administration
Collection: Reproducció digital del document publicat a: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20070004889_2007004119.pdf
Articles publicats (D-EMCI)
Is part of: © NASA TP Technical Reports, 2006, núm. 214532
Rights: Tots els drets reservats
Subject: Materials laminats
Laminated materials
Materials compostos
Composite materials
Materials compostos -- Mètodes de simulació
Composite materials -- Simulation methods
Materials compostos -- Deslaminatge
Composite materials -- Delamination
Title: Simulation of Delamination Propagation in Composites Under High-Cycle Fatigue by Means of Cohesive-Zone Models
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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