Numerical description of the edge mode at the beveled extremity of a plate

Nicolas Wilkie-Chancellier; Hugues Duflo; Alain Tinel; Jean Duclos

doi:10.1121/1.1828675

Numerical description of the edge mode at the beveled extremity of a plate

J Acoust Soc Am. 2005 Jan;117(1):194-9. doi: 10.1121/1.1828675.

Authors

Nicolas Wilkie-Chancellier¹, Hugues Duflo, Alain Tinel, Jean Duclos

Affiliation

¹ Laboratoire d'Acoustique Ultrasonore et d'Electronique, LAUE-CNRS (UMR 6068), Université du Havre, IUT, Place Robert Schuman, 76610 Le Havre, France.

PMID: 15704412
DOI: 10.1121/1.1828675

Abstract

This paper deals with the reflection of a two-dimensional harmonic Lamb wave at the beveled end of a plate. The existence of a resonant edge mode is described by a numerical model. It is proved that the edge mode is the resonance of different complex modes. The behavior of this mode as a function of the bevel angle is studied. Its amplitude decreases and its resonance frequency shifts as the bevel angle decreases from 90 to 85 deg. An unexpected strong variation of the repartition of the reflected energy is linked to this phenomenon.