Granular binary mixtures improve energy dissipation efficiency of granular dampers

TL;DR

This paper demonstrates that using a binary mixture of particles in granular dampers significantly enhances their energy dissipation efficiency, with the composition playing a crucial role.

Contribution

It introduces the use of binary mixtures in granular dampers and shows how composition affects damping efficiency through numerical simulations.

Findings

Binary mixtures improve damping efficiency.

Composition significantly influences energy dissipation.

Numerical simulations validate the impact of particle mixture.

Abstract

Granular dampers are systems used to attenuate undesired vibrations produced by mechanical devices. They consist of cavities filled by granular particles. In this work, we consider a granular damper filled with a binary mixture of frictionless spherical particles of the same material but different size using numerical discrete element method simulations. We show that the damping efficiency is largely influenced by the composition of the binary mixture.