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• W3166240599 startingPage "104331" @default.
• W3166240599 abstract "Rotating machinery are present in many engineering applications. Such rotor systems often subjected to high vibration loads that can be at the origin of noise or failure. For these reasons, it is of main importance to predict with accuracy the critical speeds and the dynamic response amplitude of such structures. However, they are often subjected to many potential uncertainties that may rise from environmental variations or manufacturing tolerances. These uncertain parameters, often described as random, are often numerous and must be taken into consideration during the design stage. For this, some design parameters are usually adjusted to propose a robust design of the rotor, considering the possible variation of the random parameters. Performing such studies require to be able to deal with a high number of uncertain parameters and with parameters of different nature, namely parametric and random. This work proposes to illustrate the efficiency of advanced kriging-based surrogate modelling in order to achieve such a goal. The proposed hybrid surrogate-model combines polynomial chaos expansion and kriging to deal with both parameter natures, to consider nine varying parameters of a full finite element model of the rotating system under study. For the first time, this hybrid surrogate model is applied to perform rotordynamics analysis and more specifically the prediction of critical speeds and the associated unbalance responses for a complex rotor system with uncertainties. Compared to previous works, the kriging performances are significantly increased by integrating some physical properties of the rotor directly in its construction. Finally, the hybrid surrogate model gives a direct access to the Sobol indices which makes it possible to carry out without additional computation costs an extensive sensitivity analysis." @default.
• W3166240599 created "2021-06-22" @default.
• W3166240599 creator A5006905411 @default.
• W3166240599 creator A5011923864 @default.
• W3166240599 date "2021-11-01" @default.
• W3166240599 modified "2023-10-10" @default.
• W3166240599 title "Advanced kriging-based surrogate modelling and sensitivity analysis for rotordynamics with uncertainties" @default.
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• W3166240599 doi "https://doi.org/10.1016/j.euromechsol.2021.104331" @default.
• W3166240599 hasPublicationYear "2021" @default.
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