Fracture behaviour of damaged wood beams repaired with an adhesively-bonded com...

• Autor(es): Raul Duarte Salgueiral Gomes Campilho ; Marcelo Francisco de Sousa Ferreira de Moura ; Ana Maria Jacinto Pina Barreto ; José J. L. Morais ; J. Sabino Domingues
• Data: 2009
• Identificador Persistente: http://hdl.handle.net/10216/15138
• Origem: Repositório Aberto da Universidade do Porto
• Assunto(s): Ciências tecnológicas; Engenharia; Engenharia mecânica
• Tipo de Documento: Artigo
• Idioma: Português

Descrição

An experimental and numerical study is presented concerning the fracture behaviour of scaled specimens of wood beams repaired with a carbon–epoxy patch under four-point bending.In this work,a numerical technique is proposed to simulate the fracture behaviour of these repairs,which includes the possibility of cohesive failure in the adhesive layer,failure with in the wood beam in different planes,and interlam-inar failure of the patch.This methodology uses the finite element method and cohesive damage model-ling, whose properties for the different fractures were obtained either by an inverse method or from the literature. The experiment sallowed the validation of this methodology,in terms of failure mode, elastic stiffness and maximum load of there pairs.The numerical results showed that the proposed technique is adequate to predict the behaviour of these repairs.