An inverse mid-high frequency energy method: Formulation and applications

Olivier Bareille (1) , Mohamed Chabchoub (1) , Sébastien Besset (1) , Mohamed Ichchou (1)

1 LTDS - Laboratoire de Tribologie et Dynamique des Systèmes

An energy method called Simplified Energy Method (MES) has already been proposed to predict energy densities repartition for structural-acoustic problems in the mid-high frequency range. In order to illustrate but also to present one of the applications of this method, this latter is used here to solve inverse structural problems. The main application, in this paper, is the structural forces identification thanks to energy densities calculation and analysis. The injected forces estimation and localization are hence obtained in the mid-high frequency range. Internal as well as boundary sources are here detected through 2D Kirchhoff-plate numerical tests.

Mots clés: Energy density; Energy method; Frequency energy; Frequency ranges; Numerical tests; Structural forces; Structural problems; Structural-acoustic problems; Acoustic fields; Architectural acoustics; Inverse problems

Domaines: Acoustique [physics.class-ph]; Acoustique [physics.class-ph]; Vibrations [physics.class-ph]; Vibrations [physics.class-ph]

Olivier Bareille, Mohamed Chabchoub, Sébastien Besset, Mohamed Ichchou. An inverse mid-high frequency energy method: Formulation and applications. 17th International Congress on Sound and Vibration, Jul 2010, Le Caire, Egypt. pp.1240-1247. ⟨hal-01011800⟩