Uncertainty quantification for dynamics of geometrically nonlinear structures coupled with internal acoustic fluids in presence of sloshing and capillarity
Autor: | Christian Soize, Quentin Akkaoui, Evangéline Capiez-Lernout, Roger Ohayon |
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Přispěvatelé: | Laboratoire de Modélisation et Simulation Multi Echelle (MSME), Université Paris-Est Marne-la-Vallée (UPEM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mécanique des Structures et des Systèmes Couplés (LMSSC), Conservatoire National des Arts et Métiers [CNAM] (CNAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Paris-Est Marne-la-Vallée (UPEM) |
Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Field (physics)
Slosh dynamics 02 engineering and technology 01 natural sciences Displacement (vector) 010305 fluids & plasmas 0203 mechanical engineering [MATH.MATH-ST]Mathematics [math]/Statistics [math.ST] 0103 physical sciences Uncertainty quantification Fluid-structure interactions Physics [PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph] Sloshing Mechanical Engineering Mechanics Inverse problem Reduced-order model [MATH.MATH-PR]Mathematics [math]/Probability [math.PR] Nonlinear system 020303 mechanical engineering & transports Capillarity Free surface Nonlinear dynamics Displacement field |
Zdroj: | Journal of Fluids and Structures Journal of Fluids and Structures, Elsevier, 2020, 94, pp.102966. ⟨10.1016/j.jfluidstructs.2020.102966⟩ |
ISSN: | 0889-9746 1095-8622 |
Popis: | International audience; In this paper, we propose an uncertainty quantification analysis, which is the continuation of a recent work performed in a deterministic framework. The fluid-structure system under consideration is the one experimentally studied in the sixties by Abramson, Kana, and Lindholm from the Southwest Research Institute under NASA contract. This coupled system is constituted of a linear acoustic liquid contained in an elastic tank that undergoes finite dynamical displacements, inducing geometrical nonlinear effects in the structure. The liquid has a free surface on which sloshing and capillarity effects are taken into account. The problem is expressed in terms of the acoustic pressure field in the fluid, of the displacement field of the elastic structure, and of the normal elevation field of the free surface. The nonlinear reduced-order model constructed in the recent work evoked above is reused for implementing the nonparametric probabilistic approach of uncertainties. The objective of this paper is to present a sensitivity analysis of this coupled fluid-structure system with respect to uncertainties and to use a classical statistical inverse problem for carrying out the experimental identification of the hyperparameter of the stochastic model. The analysis show a significant sensitivity of the displacement of the structure, of the acoustic pressure in the liquid, and of the free-surface elevation to uncertainties in both linear and geometrically nonlinear simulations. |
Databáze: | OpenAIRE |
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