Direct and inverse methods applied to the determination of mode I cohesive law of bovine cortical bone using the DCB test

• Tipo: Artigo em Revista Científica Internacional
• Data: 2017

Autores

de Moura, MFSF (Autor) FEUP; Fábio Pereira (Autor) Outra; Nuno Dourado (Autor) Outra; José Morais (Autor) Outra; José Xavier (Autor) Outra; Maria Dias (Autor) Outra

Revista

Título: International Journal of Solids and Structures

Vol. 128

Páginas: 210-220

ISSN: 0020-7683

Editora: Elsevier

Indexação

ISI Web of Knowledge - 5 Citações

ISI Web of Science

Scopus - 12 Citações

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia mecânica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: P-00N-5HX

DOI: 10.1016/j.ijsolstr.2017.08.028

Abstract (EN): This work addresses the determination of the cohesive law under mode I loading of bovine cortical bone tissue using the Double Cantilever Beam (DCB) test. Direct and inverse methods were proposed to assess the cohesive laws representative of bone fracture under mode I loading. The direct method combines the evolution of the strain energy release rate under mode I loading with the crack tip opening displacement that is monitored by digital image correlation technique. According to this method, the cohesive law is obtained by differentiation of such relation with respect to the crack opening. The inverse procedure is performed through a finite element analysis including cohesive zone modelling, conjointly with a developed optimization algorithm. This identification strategy does not require a pre-established shape of the cohesive law as with the conventional inverse based procedures, which is viewed as a novelty of this work. It was concluded that both methods provide consistent results, being appellative tools concerning systematic and methodical studies dedicated to bone fracture characterization.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11