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R-phase shape memory alloy helical spring based actuators: Modeling and experiments

Abstract : The main goal of this paper is to propose some analytical or pseudo-analytical tools facilitating the study and modeling of SMA helical spring-based actuators. Particular attention is paid to R-phase SMA helical spring-based actuators (i.e., springs made in NiTi and concerned by R-phase transformation phenomena). First, simplified models (i.e., based on beam theory framework) of R-phase SMA helical springs taking into account detwinning and assisted two-way memory effect are proposed and validated. Then, these models are used to determine the thermo-mechanical behavior of a linear bias-spring actuator. An actuator is built and used to validate the proposed models.
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https://hal-ensta-bretagne.archives-ouvertes.fr/hal-02090256
Contributor : Marie Briec <>
Submitted on : Thursday, April 4, 2019 - 3:50:22 PM
Last modification on : Monday, April 12, 2021 - 11:15:11 AM

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Pierre-Antoine Gédouin, Laurent Pino, Shabnam Arbab Chirani, Sylvain Calloch, Emmanuel Delaleau, et al.. R-phase shape memory alloy helical spring based actuators: Modeling and experiments. Sensors and Actuators A: Physical , Elsevier, 2019, 289, pp.65-76. ⟨10.1016/j.sna.2019.02.024⟩. ⟨hal-02090256⟩

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