Composite chiral shear vibration damper

Fabio Agnese, Chrystel Remillat, Fabrizio Scarpa*, Chris Payne

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

12 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)215-225
Number of pages11
JournalComposite Structures
Publication statusPublished - 5 Nov 2015


  • Auxetic
  • Chiral
  • Damper
  • Edgewise mode
  • Wind turbine blade

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