期刊
JOURNAL OF SOUND AND VIBRATION
卷 458, 期 -, 页码 158-176出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsv.2019.06.024
关键词
Statistical inverse problem; Bayesian calibration; Surrogate model; High-speed train dynamics; Uncertainty quantification
资金
- SNCF, the French National Railway Company
This paper presents a Bayesian calibration method for a simulation-based model with stochastic functional input and output. The originality of the method lies in an adaptation involving the representation of the likelihood function by a Gaussian process surrogate model, to cope with the high computational cost of the simulation, while avoiding the surrogate modeling of the functional output. The adaptation focuses on taking into account the uncertainty introduced by the use of a surrogate model when estimating the parameters posterior probability distribution by MCMC. To this end, trajectories of the random surrogate model of the likelihood function are drawn and injected in the MCMC algorithm. An application on a train suspension monitoring case is presented. (C) 2019 Elsevier Ltd. All rights reserved.
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