Dynamics of three-axle-one-unit vehicles with self-steering single axle

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This paper proposes a new rail vehicle concept: a 'three-axles-one-unit' vehicle, with a self-steering single axle. Usually, a single-axle vehicle requires a short and wide car body, which is a system design of the next generation of railway vehicles. The authors propose a new 'three-axle-one-unit' vehicle steering a single-axle truck for the railways. This proposed vehicle uses three trucks and has the standard body length of a conventional train. It has the merit of decreasing elastic-body vibration by using a lightweight car body and by setting a truck in the middle of the car body. This system design can provide high performance with respect to stability, curving performance, and axle load limitation. Analyses were made with multi-body dynamic simulations and the basic characteristics were cleared. Finally, 1/10-scale model was made and tested. The proposed vehicle's potential for high performance was proved from running experiments, including curving.

Keywords: experiment; multibody dynamics; railway vehicle; scale model; simulation; single axle; steering bogie; three axles vehicle

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/00423110802037099

Affiliations: 1: Department of Engineering Synthesis, The University of Tokyo, Tokyo, Japan 2: TOKYU CAR CORPORATION, Yokohama, Japan

Publication date: September 1, 2008

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