Simulation of delamination in composites under high-cycle fatigue

• Author(s): A Turon ; Pedro Ponces Camanho ; Josep Costa Balanzat ; Carlos Dávila
• Date: 2006
• Persistent ID: http://hdl.handle.net/10216/6759
• Origin: Repositório Aberto da Universidade do Porto
• Subject(s): Ciências tecnológicas; Engenharia; Engenharia de materiais
• Document Type: Article
• Language: Portuguese

Description

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. (c) 2006 Elsevier Ltd. All rights reserved.