Laurent Maxit
8
Documents
Présentation
Today's innovative companies are using vibration and acoustic modelling to design their products faster and with high acoustic and vibration performance. However, a single universal vibro-acoustic method covering the whole frequency range of interest does not exist in general. The “low frequency” range has been addressed since a long time by deterministic element-based approaches like the finite element method. The “high frequency” range is addressed by the well-known Statistical Energy Analysis (SEA) method which describes the power flow exchanged by the different subsystems in a statistic sense and have shown successful applications, in particular for building modelling. Between these two frequencies ranges, applying these approaches is problematic because of high computational cost or non-respect of the model assumptions. Maxit’s research attempts to propose new modelling techniques for addressing the mid-frequency range. Some of ones like the Condensed Transfer Method (CTF) consists to extend the low frequency method to the mid-frequency whereas others like Statistical model Energy distribution Analysis (SmEdA) consists to extend high frequency SEA method to the mid-frequency. His developments are achieved keeping always in mind the industrial applications. These efforts have been focused on the modelling and the analysis of the sound radiation and transmission of cars or truck cabins in white or with trim, and shipbuilding structures under various excitations like turbulence. He was involved in two European projects (VISPER, SEANET) and his works had been supported by different industrial companies (RENAULT, FIAT, VOLVO TRUCK, TREVES, DCNS, DGA, AREVA, EDF). More recently, he brings an interest for the wave field synthesis for generating random turbulent pressure field and for the acoustic detection of pipe leak using beamforming technique.
Research keywords:
Vibro-acoustic, mid-frequency range, numerical methods, noise radiation and insulation, heavy fluid-structure interaction, turbulent boundary layer, wave field synthesis, beamforming
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Power exchanged between subsystems with non-diffuse fields in statistical energy analysisJournal of the Acoustical Society of America, 2023, 153 (5), pp.3036. ⟨10.1121/10.0019551⟩
Article dans une revue
hal-04113016v1
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A hybrid modal/statistical formulation for predicting the energy response of vibroacoustic systems in the mid frequency rangeJournal of Sound and Vibration, 2022, 538, pp.117221. ⟨10.1016/j.jsv.2022.117221⟩
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hal-03763420v1
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Coherent wave reflection in integrable or chaotic symmetrical acoustical billiardsProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2021, 477 (2255), ⟨10.1098/rspa.2021.0488⟩
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hal-03440296v1
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Ergodic billiard and statistical energy analysisWave Motion, 2018, ⟨10.1016/j.wavemoti.2018.08.011⟩
Article dans une revue
hal-01896738v1
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Distribution de l'énergie vibratoire dans une plaque excitée par un bruit blanc aléatoire16ème Congrès Français d'Acoustique, CFA2022, Société Française d'Acoustique; Laboratoire de Mécanique et d'Acoustique, Apr 2022, Marseille, France
Communication dans un congrès
hal-03847998v1
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Development of a hybrid SmEdA-SEA model for predicting the power exchanged between low and high modal density subsystemsInternoise, Aug 2021, Washington (virtual), United States. ⟨10.3397/IN-2021-2535⟩
Communication dans un congrès
hal-03427208v1
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Influence of Crandall lines on ergodic billard in SEAForum Acusticum, Dec 2020, Lyon, France. pp.247-250, ⟨10.48465/fa.2020.0272⟩
Communication dans un congrès
hal-03235438v1
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STATISTICAL ENERGY ANALYSIS AND DIFFUSE FIELD26th International Congress on Sound and Vibration, Jul 2019, Montréal, Canada
Communication dans un congrès
hal-02404658v1
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