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

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Title:	Simulation of Delamination Propagation in Composites Under High-Cycle Fatigue by Means of Cohesive-Zone Models
Author:	Turon Travesa, Albert; Costa i Balanzat, Josep; Camanho, Pedro Manuel Ponces Rodrigues de Castro; Dávila, Carlos G.
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
Subject(s):	-Materials laminats -Laminated materials -Materials compostos -Composite materials -Materials compostos -- Mètodes de simulació -Composite materials -- Simulation methods -Materials compostos -- Deslaminatge -Composite materials -- Delamination
Rights:	Tots els drets reservats
Document type:	Article Article - Published version
Published by:	National Aeronautics and Space Administration
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