Výsledky vyhledávání - "Denis Brizard"

Uncertainty Quantification of Stochastic Impact Dynamic Oscillator Using a Proper Orthogonal Decomposition-Polynomial Chaos Expansion Technique

Autor: Denis Brizard, Biswarup Bhattacharyya, Eric Jacquelin

Publikováno v: Journal of Vibration and Acoustics
Journal of Vibration and Acoustics, 2020, 142 (6), 19p. ⟨10.1115/1.4047359⟩

A proper orthogonal decomposition (POD)-based polynomial chaos expansion (PCE) is utilized in this article for the uncertainty quantification (UQ) of an impact dynamic oscillator. The time-dependent nonsmooth behavior and the uncertainties are decoup

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0438a4e3b5d3afb90111fbb4f45b9061
https://doi.org/10.1115/1.4047359

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Study of the possible relationships between tramway front-end geometry and pedestrian injury risk

Autor: Denis Brizard, Philippe Beillas, Marie-Christine Chevalier

Publikováno v: Traffic Injury Prevention
Traffic Injury Prevention, Taylor & Francis, 2019, 20 (1), pp. 107-113. ⟨10.1080/15389588.2018.1536823⟩

OBJECTIVES: The aim of this article is to report on the possible relationships between tramway front-end geometry and pedestrian injury risk over a wide range of possible tramway shapes. METHODS: To study the effect of tramway front-end shape on pede

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a8e8b2bcdd96da0aafe17567510e4c0
https://doi.org/10.1080/15389588.2018.1536823

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Polynomial mode approximation for longitudinal wave dispersion in circular rods

Autor: Sylvie Ronel, Denis Brizard, Eric Jacquelin

Publikováno v: Journal of Sound and Vibration
Journal of Sound and Vibration, Elsevier, 2019, 439, pp. 388-397. ⟨10.1016/j.jsv.2018.09.062⟩

The dispersive nature of the longitudinal wave propagation in rods has been studied extensively theoretically as well as experimentally by many authors (see e.g. [1] or [2]). Split Hopkinson Pressure Bars (SHPB) is employed to dynamically characteriz

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f86dd0d3b65d5f62983811333f0a3eab
https://doi.org/10.1016/j.jsv.2018.09.062

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Polynomial mode approximations for longitudinal wave dispersion in solid and hollow circular cylinders

Autor: Eric Jacquelin, Denis Brizard

Publikováno v: Journal of Sound and Vibration. 523:116698

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a4584aac83d66c10e99337b1101d4bf7
https://doi.org/10.1016/j.jsv.2021.116698

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Correction to : Estimating Measurement Uncertainty on Stress-Strain Curves from SHPB

Autor: E. Jacquelin, S. Ronel, Denis Brizard

Publikováno v: Experimental Mechanics. 60:1175-1176

Equation (12) in the original article [1] gives the strain from the measured voltage on a full bridge configuration of the four strain gages. The full-bridge is intended to measure tension-compression strain (type III full-bridge), the correct equati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94bf94791db363a5063e24e2a8d2c594
https://doi.org/10.1007/s11340-020-00617-1

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An Impact Test to Determine the Wave Speed in SHPB: Measurement and Uncertainty

Autor: Denis Brizard

Publikováno v: Journal of Dynamic Behavior of Materials
Journal of Dynamic Behavior of Materials, Springer Verlag, 2020, 6, pp.45-52. ⟨10.1007/s40870-019-00226-7⟩
Journal of Dynamic Behavior of Materials, Springer Verlag, 2019, p. 1-8. ⟨10.1007/s40870-019-00226-7⟩

Post-processing the strain waves in split Hopkinson pressure bars to get the stress-strain in the sample requires the knowledge of the characteristic wave speed $$c_0$$ in the measuring bars. In the context of metrology, the measurement uncertainty i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43758401b203f78c880f2fb8a2da21ef
https://hal.archives-ouvertes.fr/hal-02383273

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A Kriging-NARX Model for Uncertainty Quantification of Nonlinear Stochastic Dynamical Systems in Time Domain

Autor: Eric Jacquelin, Denis Brizard, Biswarup Bhattacharyya

Publikováno v: Journal of Engineering Mechanics-ASCE
Journal of Engineering Mechanics-ASCE, American Society of Civil Engineers, 2020, 146 (7), 66p. ⟨10.1061/(ASCE)EM.1943-7889.0001792⟩

A novel approach, referred to as sparse Kriging-NARX (KNARX), is proposed for the uncertainty quantification of nonlinear stochastic dynamical systems. It combines the nonlinear autoregressive with exogenous (NARX) input model with the high fidelity

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a61c24e1c7a2a873005ac675a3896272
https://hal.archives-ouvertes.fr/hal-02969425/file/ris00001680.pdf

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