Numéro
J. Phys. IV France
Volume 02, Numéro C1, Avril 1992
Deuxième Congrès Français d'Acoustique / Second French Conference on Acoustics
Page(s) C1-515 - C1-518
DOI http://dx.doi.org/10.1051/jp4:19921111
Deuxième Congrès Français d'Acoustique / Second French Conference on Acoustics

J. Phys. IV France 02 (1992) C1-515-C1-518

DOI: 10.1051/jp4:19921111

EXPRESSIONS SIMPLIFIÉES DU FLUX D'ÉNERGIE DANS LES PLAQUES

J.-C. PASCAL

Centre Technique des Industries Mécaniques (CETIM), 52 avenue Félix-Louat, F-60300 Senlis, France


Abstract
The equations for the energy flux carried by bending waves can be approximated using a thirteen point difference pattern for the spatial derivatives in plates. But this formulation can be simplified by introducing different degrees of approximation, making them accessible to measurement by techniques of finite differences between sensors. A conventional two point method gives acceptable results in comparison with the complete thirteen point method. This paper discusses this surprizing establishment.



© EDP Sciences 1992