The present paper analyzes the dynamics of a bogie composed of two wheelsets and a frame. The bogie frame is joined to the wheelsets by means of a primary suspension system, acting on the three principal directions, i.e., longitudinal, transverse and vertical. The bogie moves along rails following its variable path. In particular, the dynamic analysis investigates the bogie behavior in both straight and curved paths, with or without an initial perturbation. Imposing an initial disturbance, the hunting motion is observed and the critical speed value estimated. The present analysis uses a lookup table for the determination of the contact characteristics. In order to minimize cpu-time, a new procedure for the interpolation of the lookup table entries has been developed. Finally, two different methods for the integration of the differential equations have been tested and comparisons with the results obtained by commercial multibody software are discussed.

Bozzone, M., Pennestri', E., Salvini, P. (2011). Dynamic analysis of a bogie for hunting detection through a simplified wheel–rail contact model. MULTIBODY SYSTEM DYNAMICS, 25, 429-460 [10.1007/s11044-010-9233-8].

Dynamic analysis of a bogie for hunting detection through a simplified wheel–rail contact model

PENNESTRI', ETTORE;SALVINI, PIETRO
2011-01-01

Abstract

The present paper analyzes the dynamics of a bogie composed of two wheelsets and a frame. The bogie frame is joined to the wheelsets by means of a primary suspension system, acting on the three principal directions, i.e., longitudinal, transverse and vertical. The bogie moves along rails following its variable path. In particular, the dynamic analysis investigates the bogie behavior in both straight and curved paths, with or without an initial perturbation. Imposing an initial disturbance, the hunting motion is observed and the critical speed value estimated. The present analysis uses a lookup table for the determination of the contact characteristics. In order to minimize cpu-time, a new procedure for the interpolation of the lookup table entries has been developed. Finally, two different methods for the integration of the differential equations have been tested and comparisons with the results obtained by commercial multibody software are discussed.
2011
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore ING-IND/13 - MECCANICA APPLICATA ALLE MACCHINE
Settore ING-IND/14 - PROGETTAZIONE MECCANICA E COSTRUZIONE DI MACCHINE
English
Con Impact Factor ISI
Multibody dynamics, raylways
Bozzone, M., Pennestri', E., Salvini, P. (2011). Dynamic analysis of a bogie for hunting detection through a simplified wheel–rail contact model. MULTIBODY SYSTEM DYNAMICS, 25, 429-460 [10.1007/s11044-010-9233-8].
Bozzone, M; Pennestri', E; Salvini, P
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/52943
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