Mathematical model for the nonlinear mechanical behavior of shape memory alloy springs

This study proposes a new model to describe the nonlinear mechanical behavior of shape memory alloy (SMA) springs. This model is applied to the shape memory effect and the superelastic effect. The formation conditions and changing process of each solid phase region on the cross section of the SMA sp...

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Bibliographic Details
Published inJournal of mechanical science and technology Vol. 37; no. 12; pp. 6579 - 6587
Main Authors Li, Yapeng, Li, Xiao
Format Journal Article
LanguageEnglish
Published Seoul Korean Society of Mechanical Engineers 01.12.2023
Springer Nature B.V
대한기계학회
Subjects
Control
Dynamical Systems
Engineering
Industrial and Production Engineering
Mathematical models
Mechanical Engineering
Mechanical properties
Original Article
Shape effects
Shape memory alloys
Solid phases
Superelasticity
Vibration
Wire
기계공학
Shape memory alloy
Spring
Mathematical model
Shape memory effect
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Summary:This study proposes a new model to describe the nonlinear mechanical behavior of shape memory alloy (SMA) springs. This model is applied to the shape memory effect and the superelastic effect. The formation conditions and changing process of each solid phase region on the cross section of the SMA spring wire, which are subject to the entire loading - unloading cycle, are analytically determined. Special attention is given to the unloading stages, for which the proposed solution improves upon existing literature. Then, the model is validated by comparing the numerical results with experimental data. Subsequently, the model is employed to investigate the influence of temperature, wire diameter, and mean diameter on the mechanical behavior of SMA springs.
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content type line 14
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-023-1129-7