Item


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

National Aeronautics and Space Administration

Author: Turon Travesa, Albert
Dávila, Carlos G.
Camanho, Pedro Manuel Ponces Rodrigues de Castro
Costa i Balanzat, Josep
Date: 2018 June 5
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
Document access: http://hdl.handle.net/2072/320334
Language: eng
Publisher: National Aeronautics and Space Administration
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: Recercat

Subjects

Authors


Warning: Unknown: write failed: No space left on device (28) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php5) in Unknown on line 0