Shape optimization under vibroacoustic criteria in the mid-high frequency range

Renata Troian (1) , Sébastien Besset (1) , Frédéric Gillot (1)

1 LTDS - Laboratoire de Tribologie et Dynamique des Systèmes

This paper deals with shape optimization issues under vibroacoustic criteria. The aim of the conducted research is to minimize the energy density in the cavity by changing its geometry parameters. The energy density is obtained through an energy method called simplified energy method (MES). The optimization method is based on a transformation function mapping 3D cavity surface on a 2D domain. The optimization process directly relies on this function and thus avoids remeshing of the geometry. The proposed method allows to describe the geometry through Bezier, Bspline and NURBS parametrization. To illustrate the method, we process a shape optimization on a simple acoustic cavity.

Mots clés: Energy method; shape optimization; vibroacoustic criteria

Domaines: Mécanique des structures [physics.class-ph]; Mécanique des structures [physics.class-ph]; Vibrations [physics.class-ph]; Vibrations [physics.class-ph]

Renata Troian, Sébastien Besset, Frédéric Gillot. Shape optimization under vibroacoustic criteria in the mid-high frequency range. Journal of Computational Acoustics, 2014, 22 (2), pp.1450003. ⟨10.1142/S0218396X14500039⟩. ⟨hal-00989369⟩