Finite element analysis of a 3D Fe-based SMA cellular beam with highly heterogeneous stress and strain distributions

Cheikh Cissé, Wael Zaki, Tarak Ben Zineb

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

6 Scopus citations

Abstract

Low-cost iron-based shape memory alloys (SMAs) have great potential for applications in large engineering parts. Their main drawback relates to their higher density compared to Nitinol and Cu-based SMAs, and can be compensated by using porous Fe-SMAs or by lightening the structures through the introduction of engineered cavities. In this manuscript, we simulate the thermomechanical response of a tapered Fe-Mn-Si beam with web openings using a 3D phenomenological model that was previously developed by the authors. The model is implemented in ABAQUS through a user defined material subroutine (UMAT). The results obtained by applying a pressure of 1 MPa and fixing both vertical ending faces show that, at room temperature, the smart beam can recover completely its initial shape. In contrast, a steel beam with the same geometry subjected to identical boundary conditions is found to fail at a much lower load. Even if the deformation of the SMA beam is dominated by plastic deformation as the loading temperature increases, its perfect shape memory effect at room temperature can be used to renovate architectural heritage or to design new smart structures.

Original languageBritish English
Title of host publicationBehavior and Mechanics of Multifunctional Materials and Composites 2017
EditorsNakhiah C. Goulbourne
PublisherSPIE
ISBN (Electronic)9781510608153
DOIs
StatePublished - 2017
EventBehavior and Mechanics of Multifunctional Materials and Composites 2017 - Portland, United States
Duration: 26 Mar 201728 Mar 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10165
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceBehavior and Mechanics of Multifunctional Materials and Composites 2017
Country/TerritoryUnited States
CityPortland
Period26/03/1728/03/17

Keywords

  • cellular beam
  • Iron-based shape memory alloys
  • phenomenological model
  • plasticity
  • shape memory effect

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