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An Engineering Solution for using Coarse Meshes in the Simulation of Delamination with Cohesive Zone Models

NASA/TM-2005-213547

This paper presents a methodology to determine the parameters used in the simulation of delamination in composite materials using decohesion finite elements. A closed-form expression is developed to define the stiffness of the cohesive layer. A novel procedure that allows the use of coarser meshes of decohesion elements in large-scale computations is proposed. The procedure ensures that the energy dissipated by the fracture process is correctly computed. It is shown that coarse-meshed models defined using the approach proposed here yield the same results as the models with finer meshes normally used in the simulation of fracture processes

© NASA TM Technical Reports, 2005, núm. 213547

National Aeronautics and Space Administration

Author: Turon Travesa, Albert
Dávila, Carlos G.
Camanho, Pedro Manuel Ponces Rodrigues de Castro
Costa i Balanzat, Josep
Date: 2005
Abstract: NASA/TM-2005-213547
This paper presents a methodology to determine the parameters used in the simulation of delamination in composite materials using decohesion finite elements. A closed-form expression is developed to define the stiffness of the cohesive layer. A novel procedure that allows the use of coarser meshes of decohesion elements in large-scale computations is proposed. The procedure ensures that the energy dissipated by the fracture process is correctly computed. It is shown that coarse-meshed models defined using the approach proposed here yield the same results as the models with finer meshes normally used in the simulation of fracture processes
Format: application/pdf
Citation: 008228
Document access: http://hdl.handle.net/10256/7896
Language: eng
Publisher: National Aeronautics and Space Administration
Collection: Articles publicats (D-EMCI)
Is part of: © NASA TM Technical Reports, 2005, núm. 213547
Rights: Tots els drets reservats
Subject: Mecànica de fractura
Fracture mechanics
Materials compostos -- Mètodes de simulació
Composite materials -- Simulation methods
Materials compostos -- Fatiga
Composite materials -- Fatigue
Materials compostos -- Deslaminatge
Composite materials -- Delamination
Title: An Engineering Solution for using Coarse Meshes in the Simulation of Delamination with Cohesive Zone Models
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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