Universität zu Köln

Pourtavakoli, Hamzeh, Parteli, Eric J. R. and Poeschel, Thorsten (2016). Granular dampers: does particle shape matter? New J. Phys., 18. BRISTOL: IOP PUBLISHING LTD. ISSN 1367-2630

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Abstract

By means of particle-based numerical simulations using the discrete element method, we address the question of how the performance of granular dampers is affected by the shape of the granular particles. In consistence with previous experiments performed with nearly spherical particles we find that independently of the particles' shape, the granular system is characterized by a gas-like regime for small amplitudes of the container's oscillation and by a collect-and-collide regime for large amplitude forcing. Both regimes are separated by an optimal operation mode-the critical amplitude of the damping oscillation for which the energy dissipation is maximal-which is independent of the particle shape for given conditions of particle mass, material properties and number of particles. However, in the gas-like regime, we find that spherical particles lead to more efficient energy dissipation compared to complex shaped particles of the same mass. In this regime, a dependence on the damper's efficiency on the particle shape is found.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Pourtavakoli, Hamzeh UNSPECIFIED UNSPECIFIED UNSPECIFIED Parteli, Eric J. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Poeschel, Thorsten UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-269498
DOI:	10.1088/1367-2630/18/7/073049
Journal or Publication Title:	New J. Phys.
Volume:	18
Date:	2016
Publisher:	IOP PUBLISHING LTD
Place of Publication:	BRISTOL
ISSN:	1367-2630
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language VIBRATION SUPPRESSION; PACKING; MODELS; DEM Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/26949