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Time-domain simulation of damped impacted plates. II. Numerical model and results

Lambourg, Christophe and Chaigne, Antoine and Matignon, Denis Time-domain simulation of damped impacted plates. II. Numerical model and results. (2001) The Journal of the Acoustical Society of America, 109 (4). 1433-1447. ISSN 0001-4966

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Official URL: http://dx.doi.org/10.1121/1.1354201

Abstract

A time-domain model for the flexural vibrations of damped plates was presented in a companion paper [Part I, J. Acoust. Soc. Am. 109, 1422-1432 (2001)]. In this paper (Part II), the damped-plate model is extended to impact excitation, using Hertz’s law of contact, and is solved numerically in order to synthesize sounds. The numerical method is based on the use of a finite-difference scheme of second order in time and fourth order in space. As a consequence of the damping terms, the stability and dispersion properties of this scheme are modified, compared to the undamped case. The numerical model is used for the time-domain simulation of vibrations and sounds produced by impact on isotropic and orthotropic plates made of various materials (aluminum, glass, carbon fiber and wood). The efficiency of the method is validated by comparisons with analytical and experimental data. The sounds produced show a high degree of similarity with real sounds and allow a clear recognition of each constitutive material of the plate without ambiguity.

Item Type:Article
Additional Information:Thanks to Acoustical Society of America. The definitive version is available at http://scitation.aip.org/ The original PDF of the article can be found at The Journal of the Acoustical Society of America: http://scitation.aip.org/content/asa/journal/jasa;jsessionid=mMx1yVm8wbZzAEUulJVlhJOC.x-aip-live-03
HAL Id:hal-01374311
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole nationale supérieure des Télécommunications - ENST (FRANCE)
Other partners > Telecom ParisTech (FRANCE)
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Deposited By: Denis Matignon
Deposited On:30 Sep 2016 09:29

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