Phenomenological modeling of porous shape memory alloys

Gülcan Özerim, Ziad Moumni, Günay Anlaş

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Porous NiTi’s mechanical behaviour is similar to the human bone’s and it shows good biocompatibility which make it an attractive material for biomedical applications. In this study, the aim is to develop a macro-scale phenomenological model to describe the mechanical behavior of porous NiTi SMAs within the framework of generalized standard materials with internal constraints including the porosity as an additional internal variable. The model includes the effect of hydrostatic pressure due to the presence of porosity. The constitutive equation obtained is used to simulate the pseudoelastic compressive response of a porous NiTi. In addition to stress-strain behaviour, evolution of phase transformation and porosity are also calculated. Numerical results show a qualitative agreement with the experimental results in the literature.

Original languageEnglish
Title of host publication9th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2019
EditorsAyech Benjeddou, Nazih Mechbal, Jean-Francois Deu
PublisherInternational Center for Numerical Methods in Engineering
Pages844-854
Number of pages11
ISBN (Electronic)9788494919466
Publication statusPublished - 1 Jan 2019
Event9th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2019 - Paris, France
Duration: 8 Jul 201911 Jul 2019

Publication series

Name9th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2019

Conference

Conference9th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2019
Country/TerritoryFrance
CityParis
Period8/07/1911/07/19

Keywords

  • Phenomenological modeling
  • Porous NiTi
  • Shape memory alloys

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