A mathematical model for the strain-temperature hysteresis of shape memory alloy actuators

M. M.S.F. Nascimento, C. J. de Araújo, L. A.L. de Almeida, J. S. da Rocha Neto, A. M.N. Lima

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

In this paper, a new hysteresis model based on the limiting loop proximity (L2P) approach is proposed to describe this phenomenon in the strain (ε)-temperature (T) characteristics of shape memory alloy (SMA) actuators including major and minor loops. In order to validate the proposed model, an experimental set-up was especially designed and implemented aim at to determine the ε-T behavior of Ni-Ti SMA wire actuators under constant loads. The obtained results for ε-T loops are presented together with the data calculated with the proposed model. Model simulations have shown good agreement with the experimental data.

Original languageEnglish
Pages (from-to)551-556
Number of pages6
JournalMaterials and Design
Volume30
Issue number3
DOIs
StatePublished - Mar 2009
Externally publishedYes

Keywords

  • Non-ferrous metals and alloys (A)
  • Thermal (E)
  • Thermal analysis (G)

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