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Article Dans Une Revue Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit Année : 2015

Probabilistic simulation for the certification of railway vehicles

Résumé

The present dynamic certification process that is based on experiments has been essentially built on the basis of experience. The introduction of simulation techniques into this process would be of great interest. However, an accurate simulation of complex, nonlinear systems is a difficult task, in particular when rare events (for example, unstable behaviour) are considered. After analysing the system and the currently utilized procedure, this paper proposes a method to achieve, in some particular cases, a simulation-based certification. It focuses on the need for precise and representative excitations (running conditions) and on their variable nature. A probabilistic approach is therefore proposed and illustrated using an example. First, this paper presents a short description of the vehicle / track system and of the experimental procedure. The proposed simulation process is then described. The requirement to analyse a set of running conditions that is at least as large as the one tested experimentally is explained. In the third section, a sensitivity analysis to determine the most influential parameters of the system is reported. Finally, the proposed method is summarized and an application is presented.
La procédure de certification en dynamique basée sur des essais est fondée essentiellement sur le retour d'expérience. L'introduction de techniques de simulation dans la procédure serait d'un grand intérêt. Cependant, une simulation précise de systèmes complexes et non-linéaires est ardue, en particulier lorsque des événements rares (par exemple, un comportement instable) sont considérés. Après avoir analysé le système et la procédure actuellement utilisée, cet article propose une méthode pour réaliser, dans des cas particuliers, une certification basée sur la simulation. Il met l'accent sur le besoin d'excitations représentatives et précises et sur leur nature variable. Une approche probabiliste est proposée et illustrée sur un exemple.

Dates et versions

hal-01216079 , version 1 (15-10-2015)

Identifiants

Citer

Christine Funfschilling, Guillaume Perrin, Michel Sebes, Yann Bezin, Laura Mazzola, et al.. Probabilistic simulation for the certification of railway vehicles. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2015, 229 (6), p770-781. ⟨10.1177/0954409715589395⟩. ⟨hal-01216079⟩
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