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

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

AbstractIn this paper, a new hysteresis model based on the limiting loop proximity (L²P) approach is proposed to describe this phenomenon in the strain (&z.epsiv;)–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 &z.epsiv;–T behavior of Ni-Ti SMA wire actuators under constant loads. The obtained results for &z.epsiv;–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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A mathematical model for the strain–temperature hysteresis of shape memory alloy actuators

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

AbstractIn this paper, a new hysteresis model based on the limiting loop proximity (L²P) approach is proposed to describe this phenomenon in the strain (&z.epsiv;)–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 &z.epsiv;–T behavior of Ni-Ti SMA wire actuators under constant loads. The obtained results for &z.epsiv;–T loops are presented together with the data calculated with the proposed model. Model simulations have shown good agreement with the experimental data.

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

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

AbstractIn this paper, a new hysteresis model based on the limiting loop proximity (L²P) approach is proposed to describe this phenomenon in the strain (&z.epsiv;)–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 &z.epsiv;–T behavior of Ni-Ti SMA wire actuators under constant loads. The obtained results for &z.epsiv;–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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Title:

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

Contributors:

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

Publication date:

2008-05-23

Size:

6 pages

ISSN:

DOI:

https://doi.org/10.1016/j.matdes.2008.05.062

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

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

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