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THE DYNAMICS OF GUIDED INDEPENDENTLY-ROTATING-WHEEL TRUCKS

S Koyanagi

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Abstract

The upper limit of running velocity of conventional railway vehicles is considered to be about 350 km/h owing to the difficulty of stabilizing hunting motions, and some new guide system is considered necessary for the railway vehicle running at higher speed than this limit. One of the solutions is the guided CIW (Cylindrical-and-Independently-rotating-Wheel) truck reported in this paper. From the analysis of the stability of motion, curve negotiating characteristics and the forced vibration induced by alignment irregularities of guide rail, it is concluded that it is possible to realize a high speed vehicle by means of the guided CIW trucks.

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What this paper is about

The upper limit of running velocity of conventional railway vehicles is considered to be about 350 km/h owing to the difficulty of stabilizing hunting motions, and some new guide system is considered necessary for the railway vehicle running at higher speed than this limit. One of the solutions is the guided CIW (Cylindrical-and-Independently-rotating-Wheel) truck reported in this paper. From the analysis of the stability of motion, curve negotiating characteristics and the forced vibration induced by alignment irregularities of guide rail, it is concluded that it is possible to realize a high speed vehicle by means of the guided CIW trucks.

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Available abstract

The upper limit of running velocity of conventional railway vehicles is considered to be about 350 km/h owing to the difficulty of stabilizing hunting motions, and some new guide system is considered necessary for the railway vehicle running at higher speed than this limit. One of the solutions is the guided CIW (Cylindrical-and-Independently-rotating-Wheel) truck reported in this paper. From the analysis of the stability of motion, curve negotiating characteristics and the forced vibration induced by alignment irregularities of guide rail, it is concluded that it is possible to realize a high speed vehicle by means of the guided CIW trucks.

Key concepts: Truck, Vibration, Limit (mathematics), Automotive engineering, Speed limit, Critical speed, Vehicle dynamics, Tire balance

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