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Impulse and Low Frequency Acoustic Wave Propagation in Granular Beds

Published online by Cambridge University Press:  01 February 2011

Surajit Sen ,
Marian Manciu ,
Victoria Tehan  and
Alan J. Hurd
Surajit Sen
Affiliation:
Department of Physics, State University of New York at Buffalo, Buffalo, NY 14260–1500, USA
Marian Manciu
Affiliation:
Department of Physics, State University of New York at Buffalo, Buffalo, NY 14260–1500, USA
Victoria Tehan
Affiliation:
Department of Physics, State University of New York at Buffalo, Buffalo, NY 14260–1500, USA
Alan J. Hurd
Affiliation:
Department 1841, Sandia National Laboratories, Albuquerque, NM 87185, USA
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Abstract

The study of sound propagation in granular beds at frequencies exceeding a MHz has been a subject of study for many years. Much remains to be learnt about sound propagation at lower frequencies. We shall present our studies on the problem of impulse propagation and briefly comment on low frequency acoustic propagation in model granular beds using particle dynamical simulations. The following results will be briefly discussed. (i) Impulses propagating as solitary waves in 1-D granular chains with Hertz contacts in the absence of precompression. (ii) The effects of uniform precompression and gravitational loading on wave propagation. (iii) Impulse propagation in 3-D granular beds. The research presented shall highlight the intrinsically nonlinear nature of wave propagation in granular beds.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 627: Symposium BB – The Granular State , 2000 , BB3.3
Copyright
Copyright © Materials Research Society 2000

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