Accurate simulation of delamination growth under mixed-mode loading using cohesive elements: Definition of interlaminar strengths and elastic stiffness

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Turon, A (Autor) Outra; Camanho, PP (Autor) FEUP; Costa, J (Autor) Outra; Renart, J (Autor) Outra

Revista

Título: Composite Structures

Vol. 92 Nº 2

Páginas: 1857-1864

ISSN: 0263-8223

Editora: Elsevier

Indexação

ISI Web of Knowledge - 310 Citações

ISI Web of Science

Scopus - 375 Citações

COMPENDEX

INSPEC

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia dos materiais

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia mecânica

Outras Informações

ID Authenticus: P-003-54F

DOI: 10.1016/j.compstruct.2010.01.012

Abstract (EN): A methodology for predicting accurately the propagation of delamination under mixed-mode fracture with cohesive elements is proposed. It is shown that changes in the local mode ratio during the evolution of damage under mixed-mode loading can cause errors in the determination of the energy dissipation and result in inaccurate predictions of the global load-displacement response - even under conditions where, according to Linear Elastic Fracture Mechanics, the global mode ratio is constant. To address this difficulty, relations between the interlaminar strengths and the penalty stiffness are proposed which ensure a correct energy dissipation when delamination propagates. The validity of the proposed methodology is demonstrated for different mode ratios by comparison with the corresponding analytical solutions.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8