Numerical Simulation of Delamination Growth in Composite Materials

• Tipo: Relatório Técnico
• Data: 2001

Autores

Pedro Ponces Camanho (Autor) FEUP

Outras Informações

Abstract (EN): The use of decohesion elements for the simulation of delamination in composite materials is reviewed. The test methods available to measure the interfacial fracture toughness used in the formulation of decohesion elements are described initially. After a brief presentation of the virtual crack closure technique, the technique most widely used to simulate delamination growth, the formulation of interfacial decohesion elements is described. Problems related with decohesion element constitutive equations, mixed-mode crack growth, element numerical integration and solution procedures are discussed. Based on these investigations, it is concluded that the use of interfacial decohesion elements is a promising technique that avoids the need for a pre-existing crack and pre-defined crack paths, and that these elements can be used to simulate both delamination onset and growth.

Idioma: Português

Tipo (Avaliação Docente): Científica

Referência: NASA/TP-2001-211041

Nº de páginas: 24