Understanding Cohesive Law Parameters in Ductile Fracture Initiation and Propagation

• Tipo: Artigo em Revista Científica Internacional
• Data: 2021

Autores

Seabra, MRR (Autor) Outra; José César de Sá (Autor) FEUP

Revista

Título: European Journal of Computational Mechanics

Vol. 30

Páginas: 51-80

ISSN: 1779-7179

Editora: River Publishers

Indexação

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Outras Informações

ID Authenticus: P-00V-9DW

DOI: 10.13052/ejcm1779-7179.3012

Abstract (EN): Continuum Damage Mechanics is successfully employed to describe the behaviour of metallic materials up to the onset of fracture. Nevertheless, on its own, it is not able to accurately trace discrete crack paths. In this contribution, Continuous Damage Mechanics is combined with the XFEM and a Cohesive Law to allow the full simulation of a ductile fracture process. In particular, the Cohesive Law assures an energetically consistent transition from damage to crack for critical damage values lower than one. Moreover, a novel interpretation is given to the parameters of the cohesive law. A fitting method derived directly from the damage model is proposed for these parameters, avoiding additional experimental characterization.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 30