A fluid-structural model of the cochlea using wave finite element method
A fluid-structural model of the cochlea using wave finite element method
The human cochlea is very effective at discriminating sound waves at different frequencies, but is also notable for its complicated geometry and small physical size. This paper describes a elative simple representation of the cochlea that efficiently models wave propagation along it by incorporating fluid-structure coupling between the two fluid chambers and the inhomogeneous basilar membrane (BM) that separates them. The numerical solution is initially obtained by using the Finite Element (FE) method, by connecting a series of elements with longitudinal variation in Young's modulus. The wavenumbers of each section are then obtained by applying the Wave Finite Element (WFE) method and the Wentzel–Kramers–Brillouin (WKB) approximation is used to model the wave propagation. The WFE method provides a new and powerful way of predicting the important characteristics in the cochlea at low computational cost which is less than half in both time and of the memory requirement of a full FE model.
wave finite element, cochlea, fluid-structural coupling, wkb approximation
0854329102
University of Southampton
Ni, G.
f6ddc112-7d81-403a-b97a-7ecbc8fd4e59
Elliott, S.J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Mace, B.R.
cfb883c3-2211-4f3a-b7f3-d5beb9baaefe
July 2010
Ni, G.
f6ddc112-7d81-403a-b97a-7ecbc8fd4e59
Elliott, S.J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Mace, B.R.
cfb883c3-2211-4f3a-b7f3-d5beb9baaefe
Ni, G., Elliott, S.J. and Mace, B.R.
(2010)
A fluid-structural model of the cochlea using wave finite element method.
Brennan, M.J., Kovacic, Ivana, Lopes, V., Murphy, K., Petersson, B., Rizzi, S. and Yang, T.
(eds.)
In Recent Advances Structural Dynamics: Proceedings of the X International Conference.
University of Southampton..
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Conference or Workshop Item
(Paper)
Abstract
The human cochlea is very effective at discriminating sound waves at different frequencies, but is also notable for its complicated geometry and small physical size. This paper describes a elative simple representation of the cochlea that efficiently models wave propagation along it by incorporating fluid-structure coupling between the two fluid chambers and the inhomogeneous basilar membrane (BM) that separates them. The numerical solution is initially obtained by using the Finite Element (FE) method, by connecting a series of elements with longitudinal variation in Young's modulus. The wavenumbers of each section are then obtained by applying the Wave Finite Element (WFE) method and the Wentzel–Kramers–Brillouin (WKB) approximation is used to model the wave propagation. The WFE method provides a new and powerful way of predicting the important characteristics in the cochlea at low computational cost which is less than half in both time and of the memory requirement of a full FE model.
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Published date: July 2010
Additional Information:
Paper No.023(Format - USB Pen Drive)
Keywords:
wave finite element, cochlea, fluid-structural coupling, wkb approximation
Organisations:
Signal Processing & Control Grp
Identifiers
Local EPrints ID: 160697
URI: http://eprints.soton.ac.uk/id/eprint/160697
ISBN: 0854329102
PURE UUID: 48ea68f3-8275-4c34-9ea3-b6d533a32932
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Date deposited: 20 Jul 2010 13:41
Last modified: 11 Dec 2021 04:40
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Contributors
Author:
G. Ni
Editor:
M.J. Brennan
Editor:
Ivana Kovacic
Editor:
V. Lopes
Editor:
K. Murphy
Editor:
B. Petersson
Editor:
S. Rizzi
Editor:
T. Yang
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