A note on the thermal effects upon a Gurson-type material model

• Tipo: Artigo em Revista Científica Internacional
• Data: 2016

Autores

Vaz, M (Autor) Outra; F.M. Andrade Pires (Autor) FEUP

Revista

Título: Continuum Mechanics and Thermodynamics

Vol. 28

Páginas: 785-798

ISSN: 0935-1175

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 5 Citações

Scopus - 9 Citações

Outras Informações

ID Authenticus: P-00G-1Z7

DOI: 10.1007/s00161-015-0416-7

Abstract (EN): Gurson-type material models are based on concepts of porous materials and have been largely used to describe mechanical degradation under inelastic deformation. In addition to mechanical damage, temperature evolution is also relevant to this class of problems owing to thermal softening effects. This work addresses a finite strain thermo-elastic-plastic formulation fully coupled to the energy conservation equation and investigates the sensitivity of the mechanical response with respect to the temperature evolution based on tensile tests for small to moderate temperatures. The results indicate that the initial temperature, sensitivity of the yield stress to temperature and the heat transfer coefficient at the specimen surface play an important role on the evolution of the void fraction, stress distribution and, ultimately, the load-bearing capacity.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 14