Stress and Failure Analysis of Repaired Sandwich Composite Beams using a Cohesive Damage Model

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

Autores

Ramantani, DA (Autor) Outra; Campilho, RDSG (Autor) Outra; de Moura, MFSF (Autor) FEUP; Marques, AT (Autor) FEUP

Revista

Título: Journal of Sandwich Structures and Materials

Vol. 12

Páginas: 369-390

ISSN: 1099-6362

Editora: SAGE

Indexação

ISI Web of Knowledge - 15 Citações

ISI Web of Science

Scopus - 22 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: P-003-73A

DOI: 10.1177/1099636209104520

Abstract (EN): The behavior of a repaired sandwich beam subjected to four-point bending is investigated numerically using the ABAQUS (R) software and specially developed interface elements including a cohesive mixed-mode damage model based on the indirect use of fracture mechanics. The two major repair configurations for sandwich structures, namely overlap and scarf repair, are studied. The interface elements, placed at the middle of the adhesive, parent laminate/adhesive and adhesive/patch interfaces, allow to obtain stress distributions at these locations as well as to simulate damage onset and growth. The influence of several geometrical parameters, such as overlap length and patch thickness for overlap repairs, and scarf angle for scarf repairs, is evaluated in terms of stress analysis and strength predictions. Conclusions were drawn about design guidelines of the sandwich composite repair.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 22