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

The Journal of the Acoustical Society of America
C LambourgD Matignon

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.

References

Apr 28, 2001·The Journal of the Acoustical Society of America·A Chaigne, C Lambourg

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Citations

Apr 28, 2001·The Journal of the Acoustical Society of America·A Chaigne, C Lambourg
Sep 8, 2010·The Journal of the Acoustical Society of America·Stephen McAdamsBruno L Giordano
Dec 1, 2013·The Journal of the Acoustical Society of America·Lei DingAmir Khan
Jun 8, 2007·The Journal of the Acoustical Society of America·Sofia Cavaco, Michael S Lewicki
Aug 27, 2005·The Journal of the Acoustical Society of America·Robert A LutfiJoshua M Alexander
Mar 9, 2006·The Journal of the Acoustical Society of America·Bruno L Giordano, Stephen McAdams
Feb 12, 2009·The Journal of the Acoustical Society of America·Thomas R MooreDavid J Parker

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