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Calculation of vibro-acoustic frequency response functions using a single frequency boundary element solution and a Pade expansion

Calculation of vibro-acoustic frequency response functions using a single frequency boundary element solution and a Pade expansion
Calculation of vibro-acoustic frequency response functions using a single frequency boundary element solution and a Pade expansion
This paper presents a new technique to calculate the acoustic field generated by a vibrating body over a frequency interval [f1, f2]. The solution is based on the calculation of the acoustic response at a central frequency f0 by a classical boundary element technique and on an extension of this solution to the whole frequency interval using a Padé approximation of the frequency response function. The Padé approximation requires the knowledge of the successive derivatives of the acoustic field with respect to frequency. The paper describes the technique used to evaluate these derivatives and compares the solution of this new algorithm to results obtained by a classical all-BEM frequency sweep technique. Comparison are made both in terms of accuracy and in terms of computational resources needed for the calculation
1610-1928
371-377
Coyette, Jean-Pierre
2c01c3b8-885d-4943-bc0f-5bd99c322c41
Lecomte, Christophe
87cdee82-5242-48f9-890d-639a091d0b9c
Migeot, Jean-Louis
d87ede19-4bf7-415c-994a-a424546e12c5
Blanche, Jerome
5cce5538-4e53-46ea-86cf-753957f6039a
Rochette, Michel
d86daadb-6f09-4b35-ae14-c8fab72825e0
Mirkovic, Goran
e798c5ed-0977-4956-8e80-dd40e2cf877a
Coyette, Jean-Pierre
2c01c3b8-885d-4943-bc0f-5bd99c322c41
Lecomte, Christophe
87cdee82-5242-48f9-890d-639a091d0b9c
Migeot, Jean-Louis
d87ede19-4bf7-415c-994a-a424546e12c5
Blanche, Jerome
5cce5538-4e53-46ea-86cf-753957f6039a
Rochette, Michel
d86daadb-6f09-4b35-ae14-c8fab72825e0
Mirkovic, Goran
e798c5ed-0977-4956-8e80-dd40e2cf877a

Coyette, Jean-Pierre, Lecomte, Christophe, Migeot, Jean-Louis, Blanche, Jerome, Rochette, Michel and Mirkovic, Goran (1999) Calculation of vibro-acoustic frequency response functions using a single frequency boundary element solution and a Pade expansion. Acta Acustica united with Acustica, 85 (3), 371-377.

Record type: Article

Abstract

This paper presents a new technique to calculate the acoustic field generated by a vibrating body over a frequency interval [f1, f2]. The solution is based on the calculation of the acoustic response at a central frequency f0 by a classical boundary element technique and on an extension of this solution to the whole frequency interval using a Padé approximation of the frequency response function. The Padé approximation requires the knowledge of the successive derivatives of the acoustic field with respect to frequency. The paper describes the technique used to evaluate these derivatives and compares the solution of this new algorithm to results obtained by a classical all-BEM frequency sweep technique. Comparison are made both in terms of accuracy and in terms of computational resources needed for the calculation

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More information

Published date: May 1999
Organisations: Computational Engineering & Design Group

Identifiers

Local EPrints ID: 342607
URI: http://eprints.soton.ac.uk/id/eprint/342607
ISSN: 1610-1928
PURE UUID: 0450c7df-925b-4617-bf1e-1d843d1c9d29

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Date deposited: 19 Oct 2012 08:13
Last modified: 16 Jul 2019 21:55

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