Torsional oscillations in the driveline of heavy-duty locomotives, characterized by mechanically interconnected axles, are analyzed in this paper. In order to properly reproduce the experimentally observed behavior, a Multi-Body vehicle model has been implemented taking into account torsional deformability of the driveline and of the wheelsets. An extension of the Shen-Hedrick-Elkins model has also been proposed and integrated into the model for reproducing the decreasing section of the creep force-creep curve experimentally measured at high creepages and responsible for the driveline torsional vibrations. In particular a temperature dependant friction coefficient has been introduced into the Shen-Hedrick-Elkins model to explain the decrease of creep forces at high creepages.

A MB model for analysing torsional vibrations in the powertrain of diesel shunting locomotives

COLLINA, ANDREA;RUSPINI, EMANUELE;SABBIONI, EDOARDO;
2008

Abstract

Torsional oscillations in the driveline of heavy-duty locomotives, characterized by mechanically interconnected axles, are analyzed in this paper. In order to properly reproduce the experimentally observed behavior, a Multi-Body vehicle model has been implemented taking into account torsional deformability of the driveline and of the wheelsets. An extension of the Shen-Hedrick-Elkins model has also been proposed and integrated into the model for reproducing the decreasing section of the creep force-creep curve experimentally measured at high creepages and responsible for the driveline torsional vibrations. In particular a temperature dependant friction coefficient has been introduced into the Shen-Hedrick-Elkins model to explain the decrease of creep forces at high creepages.
11th Mini Conference on Vehicle System Dynamics, Identification and Anomalies (VSDIA 2008)
9789633130117
Diesel locomotive; wheel-rail contact; thermal effects; torsional vibrations; MB simulations.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/546058
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