Stochastic Finite Element Analysis of a Damped Beam on Random Foundation and Subjected to Fast Moving Loads

by Nobuhiro Yoshikawa, Univ of Tokyo, Tokyo, Japan,
Shigeru Nakagiri, Univ of Tokyo, Tokyo, Japan,
Ladislav Fryba, Univ of Tokyo, Tokyo, Japan,

Document Type: Proceeding Paper

Part of: Probabilistic Mechanics and Structural and Geotechnical Reliability


The dynamic effect of fast moving loads on a rail is analysed by the perturbation-based stochastic finite element method. The rail is modeled as an elastic beam resting on the Winkler type foundation whose stiffness is of spatial stochastic process. Kelvin-Voigt model is used to express damping of the rail and foundation. The variance of the deflection of and bending moment in the rail is investigated for two loads moving at constant speed.

Subject Headings: Stochastic processes | Finite element method | Rail transportation | Damping | Beams | Foundations | Moving loads | Load factors

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