Modeling of Railway Vehicles for Virtual Homologation from Dynamic Behavior Perspective

Abstract:

Modeling and simulation in railway vehicle dynamics is a useful tool in the design of rolling stock when choosing the best solutions for vehicle and infrastructure components in assessing possible risks and, more recently, in the certification of railway vehicles from the point of view of dynamic behavior based on virtual approval. This paper presents the discrete-continuous model of two-level suspension passenger car running along a tangent track with random vertical irregularity as the theoretical tool to asses the parameters of the approval criteria: the running behavior and comfort. The equations of motion are solved in frequency-domain using the modal analysis method and then the carbody acceleration and the comfort index are calculated. The results derived from a numerical simulation performed for the virtual homologation of a particular passenger car are presented, and so is the possibility to improve the design of the vehicle suspension, in compliance with the approval criteria.

• Periodical: Applied Mechanics and Materials (Volume 371)
• Pages: 647-651
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.371.647
• Online since: August 2013
• Authors: Madalina Dumitriu
• Keywords: Comfort Index, Dynamic Behavior, Railway Vehicles, Running Behavior, Virtual Homologation

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