Dimensional optimization of carbon-epoxy bars for reinforcement of wood beams

• Tipo: Artigo em Revista Científica Internacional
• Data: 2018

Autores

Marcelo F. S. F. de Moura (Autor) FEUP; João P. Reis (Autor) Outra; Filipe G. A. Silva (Autor) Outra; N. Dourado (Autor) Outra

Revista

Título: Composites Part B: Engineering

Vol. 139

Páginas: 163-170

ISSN: 1359-8368

Editora: Elsevier

Indexação

ISI Web of Knowledge - 5 Citações

ISI Web of Science

Scopus - 6 Citações

INSPEC

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia mecânica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: P-00N-AB9

DOI: 10.1016/j.compositesb.2017.11.046

Abstract (EN): In this work, experimental and numerical studies of wood beams reinforced with an embedded bar of carbon fibre reinforced polymer were performed. The beams were submitted to three-point bending loading considering three different heights of embedded systems. The experimental load-displacement curves were used to validate a numerical model based on three-dimensional finite element analysis including cohesive zone modelling and plastic behaviour of wood. Different cohesive laws were assumed to mimic several failure modes observed experimentally, as is the case of composite-wood members debonding and transverse fracture of the whole beam. Subsequently, the model was used in several numerical analyses aiming the optimization of the reinforcing bar dimensions considering a constant volume fraction. The objective was to achieve the maximum reinforced beam strength under bending. It was concluded that the best solution consists of using a thin external reinforcement constituted by four layers of carbon-epoxy unidirectional laminate.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8