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Composite chiral shear vibration damper

Authors :
Chrystel D L Remillat
Chris Payne
Fabio Agnese
Fabrizio Scarpa
Source :
Composite Structures. 132:215-225
Publication Year :
2015
Publisher :
Elsevier BV, 2015.

Abstract

The work describes a structural composite damper concept based on a chiral auxetic configuration. Chiral structures couple uniaxial and rotational deformations to provide a negative Poisson’s ratio behaviour and high dissipation through shear strain energy, and this feature is exploited by up-scaling the deformation mechanism of the chiral cell to design a damper that dissipates energy in the edgewise/shear modes, like the ones occurring in wind turbine blades. The damper concept and its configuration are evaluated through a series of Finite Element parametric and probabilistic models. A small-scale demonstrator is manufactured and subjected to compressive cyclic loading at increasing maximum displacements. Good agreement between the numerical and experimental force–displacement and energy dissipated-displacement curves is observed, showing the feasibility of the chiral composite damper concept for vibration damping-related applications at low frequencies.

Details

ISSN :
02638223
Volume :
132
Database :
OpenAIRE
Journal :
Composite Structures
Accession number :
edsair.doi...........ef83dd0bef1c78181b322f5391b1b055
Full Text :
https://doi.org/10.1016/j.compstruct.2015.05.048