Structural partitioning of complex structures in the medium-frequency range. An application to an automotive vehicle

M. Kassem (1, 2) , Christian Soize (1) , L. Gagliardini (2)

1 MSME - Laboratoire de Modélisation et Simulation Multi Echelle
2 PSA Peugeot Citroen

In a recent work [Journal of Sound and Vibration 323 (2009) 849-863] the authors presented an energy-density field approach for the vibroacoustic analysis of complex structures in the low and medium frequency ranges. In this approach, a local vibroacoustic energy model as well as a simplification of this model were constructed. In this paper, firstly an extension of the previous theory is performed in order to include the case of general input forces and secondly, a structural partitioning methodology is presented along with a set of tools used for the construction of a partitioning. Finally, an application is presented for an automotive vehicle.

Mots clés: STATISTICAL ENERGY ANALYSIS; BUILT-UP SYSTEMS; EXPERIMENTAL VALIDATION; EXPERIMENTAL IDENTIFICATION; VIBROACOUSTIC ANALYSIS; VARIANCE PREDICTION; VIBRATION ANALYSIS; UNCERTAINTIES; MODEL; SEA

Domaines: Mécanique [physics.med-ph]; Probabilités [math.PR]; Acoustique [physics.class-ph]; Vibrations [physics.class-ph]

M. Kassem, Christian Soize, L. Gagliardini. Structural partitioning of complex structures in the medium-frequency range. An application to an automotive vehicle. Journal of Sound and Vibration, 2011, 330 (5), pp.937-946. ⟨10.1016/j.jsv.2010.09.008⟩. ⟨hal-00684293⟩