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An energy-based automatic sub-structuring method in low- and medium-frequency ranges for uncertain computational vibroacoustic model

Abstract : An energy-based automatic sub-structuring method is proposed. The established energy formulation is applicable in the low- and medium-frequency ranges when using a stochastic vibroacoustic model. The idea evolved from recent work which aimed to take into account system parameters and model uncertainties in vibroacoustic modeling by applying a probabilistic approach of uncertainties. Numerical and experimental results showed statistical properties of the frequency response functions in low- and medium-frequency ranges in a stochastic context. Thus, although inspired from the Statistical Energy Analysis (SEA) method, the used energy formulation is a quite different method and it has the advantage of being applicable in low-frequency ranges where the SEA and its derivations fail to apply. The stochastic model is constructed using the non-parametric probabilistic approach. A simplified model is constructed based on the proposed energy formulation.
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https://hal-upec-upem.archives-ouvertes.fr/hal-00691745
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Submitted on : Saturday, May 5, 2012 - 7:05:17 PM
Last modification on : Thursday, March 19, 2020 - 11:52:03 AM
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M. Kassem, Christian Soize, L. Gagliardini. An energy-based automatic sub-structuring method in low- and medium-frequency ranges for uncertain computational vibroacoustic model. NOVEM 2009, Noise and Vibration: Emerging Methods, Klebe College, Oxford, Apr 2009, Oxford, United Kingdom. pp.1-10. ⟨hal-00691745⟩

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