Passive control of the flutter instability on a two-degrees-of-freedom system with pseudoelastic shape-memory alloy springs.

Abstract : 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 (∼ 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 damping undesired vibrations in a passive manner. A 2-dofs system is here used to model the classical flutter instability of a wing section in an uniform flow. The SMA spring is selected on the pitch mode in order to dissipate energy of the predominant motion. A simple 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.
Type de document :
Communication dans un congrès
Int. Conference on Structural nonlinear dynamics and diagnosis, CSNDD 2014, May 2014, Agadir, Morocco. 2014, 〈10.1051/matecconf/20141601006〉
Liste complète des métadonnées

Littérature citée [8 références]  Voir  Masquer  Télécharger

https://hal-ensta.archives-ouvertes.fr/hal-01134710
Contributeur : Cyril Touzé <>
Soumis le : mardi 24 mars 2015 - 10:55:24
Dernière modification le : mercredi 20 décembre 2017 - 11:34:06

Fichier

AMalher_ODoare_CTouze.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Arnaud Malher, Olivier Doaré, Cyril Touzé. Passive control of the flutter instability on a two-degrees-of-freedom system with pseudoelastic shape-memory alloy springs.. Int. Conference on Structural nonlinear dynamics and diagnosis, CSNDD 2014, May 2014, Agadir, Morocco. 2014, 〈10.1051/matecconf/20141601006〉. 〈hal-01134710〉

Partager

Métriques

Consultations de la notice

215

Téléchargements de fichiers

201