Granular dampers: does particle shape matter?
Pourtavakoli H, Ribeiro Parteli EJ, Pöschel T (2016)
Publication Language: English
Publication Type: Journal article, Original article
Publication year: 2016
Journal
Publisher: Institute of Physics: Open Access Journals / Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft
Book Volume: 18
Journal Issue: 073049
DOI: 10.1088/1367-2630/18/7#/073049
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
fi
nd 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
fi
nd that spherical particles lead to more ef
fi
cient energy dissipation compared
to complex shaped particles of the same mass. In this regime, a dependence on the damper
’
sef
fi
ciency
on the particle shape is found.
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How to cite
APA:
Pourtavakoli, H., Ribeiro Parteli, E.J., & Pöschel, T. (2016). Granular dampers: does particle shape matter? New Journal of Physics, 18(073049). https://dx.doi.org/10.1088/1367-2630/18/7#/073049
MLA:
Pourtavakoli, Hamzeh, Eric Josef Ribeiro Parteli, and Thorsten Pöschel. "Granular dampers: does particle shape matter?" New Journal of Physics 18.073049 (2016).
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