Bayesian calibration of mechanical parameters of high-speed train suspensions. (2017)

• Record Type: Journal Article
• Authors: Lebel, D.; Soize, C.; Funfschilling, C.; Perrin, G.
• Is Part Of: Procedia engineering. Volume 199(2017)
• Page Start: 1234
• Page End: 1239
• Publication Date: 2017
• Subjects: statistical inverse problem -- railway dynamics -- random track irregularities -- high-speed train suspensions; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2017.09.257
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: The objective of the work presented here is a bayesian calibration of parameters describing the mechanical characteristics of high-speed train suspensions for maintenance purposes. This calibration is achieved by comparing simulation results to on-track acceleration measurements. It requires the estimation on the multidimensionnal admissible set of the parameters of the likelihood function of the train dynamic response. This estimation is achieved thanks to the identification of a kriging metamodel of this likelihood function to reduce the numerical cost. From this metamodel, the posterior probability density function of the parameters is estimated using an MCMC algorithm.