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

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Vaz, M (Author) Other; F.M. Andrade Pires (Author) FEUP

Journal

Title: Continuum Mechanics and Thermodynamics

Vol. 28

Pages: 785-798

ISSN: 0935-1175

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 5 Citations

Scopus - 9 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14