Pseudoelastic Shape Memory Alloys to Mitigate the Flutter Instability: A Numerical Study

  • Arnaud Malher
  • Olivier Doaré
  • Cyril Touzé
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 168)


A passive control of aeroelastic instabilities on a two-degrees-of-freedom (dofs) system is considered here using shape memory alloys (SMA) springs in their pseudo-elastic regime. SMA present a solid-solid phase change that allow them to face strong deformations (\(\sim \)10 %); in the pseudo-elastic regime, an hysteresis loop appears in the stress-strain relationship which in turn gives rise to an important amount of dissipated energy. This property makes the SMA a natural candidate for mitigating undesired vibrations in a passive manner. A 2-dofs system is here used to model the classical flutter instability of a wing section in a uniform flow. The SMA spring is selected to act on the pitch in order to dissipate energy of the predominant motion. A simple phenomenological model for the SMA hysteresis loop is introduced, allowing for a quantitative study of the important parameters to optimize in view of an experimental design. Thanks to a simple phenomenological model for the SMA hysteresis loop, a quantitative numerical study is performed in order to exhibit the best tuning of the material parameters for controlling the flutter instability.


Hysteresis Loop Shape Memory Alloy Bifurcation Diagram Limit Cycle Oscillation Flutter Speed 
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This work is supported by Direction Générale de l’Armement (DGA) from French Ministry of Defense.


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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Unité de Mécanique (UME)ENSTA-ParisTechPalaiseau CedexFrance

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