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BIBTEX RIS

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

2008; Elsevier BV; Volume: 30; Issue: 3 Linguagem: Inglês

10.1016/j.matdes.2008.05.062

ISSN

0261-3069

Autores

M.M.S.F. Nascimento, Carlos José de Araújo, L.A.L. de Almeida, José Sérgio da Rocha Neto, A.M.N. Lima,

Tópico(s)

Magnetic Properties and Applications

Resumo

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.

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