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A sub-structuring method in low- and medium-frequency ranges based on an energy formulation and a stochastic vibroacoustic computational model

Abstract : A sub-structuring method of complex structures is proposed in this paper. This method is developed using an energy formulation which is based on a stochastic vibroacoustic computational model. Recent works have been done for the application of the non parametric probabilistic approach of system parameters and model uncertainties on automotive vehicle structures. The results of this work showed that, in a stochastic context, some statistical properties of the frequency response functions (FRF) in low- and medium-frequency ranges can be used in order to simplify the vibroacoustic problem. Thus, although inspired by Statistical Energy Analysis (SEA), unlike the existing statistical methods, the used energy formulation is applicable in the low- and medium-frequency ranges thanks to the stochastic vibroacoustic computational model.
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https://hal-upec-upem.archives-ouvertes.fr/hal-00691741
Contributor : Christian Soize <>
Submitted on : Thursday, April 26, 2012 - 10:44:54 PM
Last modification on : Thursday, March 19, 2020 - 11:52:03 AM
Long-term archiving on: : Friday, July 27, 2012 - 2:42:22 AM

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M. Kassem, Christian Soize, L. Gagliardini. A sub-structuring method in low- and medium-frequency ranges based on an energy formulation and a stochastic vibroacoustic computational model. 2nd International Conference on Uncertainty in Structural Dynamics, The University of Sheffield, Jun 2009, Sheffield, United Kingdom. pp.1-8. ⟨hal-00691741⟩

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