期刊名称：Eastern-European Journal of Enterprise Technologies
印刷版ISSN：1729-3774
电子版ISSN：1729-4061
出版年度：2017
卷号：5
期号：7
页码：65-72
DOI：10.15587/1729-4061.2017.109791
语种：English
出版社：PC Technology Center
摘要：Energy saving direction on railway transport is substantiated based on reducing the motion resistance related to directing the undercarriages by a rail track. This motion resistance is defined as the kinematic resistance to motion. We clarified the nature of motion resistance associated with directing the rolling stock by a rail track. This opens up certain prospects in terms of reducing the kinematic motion resistance through design parameters of the trucks and the track. The kinematic resistance to motion could become an additional criterion for the optimal choice of characteristics of mechanical part of the undercarriages. The same applies to the permissible deviations in parameters of the rolling stock and the track.We model steady motion of a semi-wagon’s truck in a circular curve at constant velocity under the action of contact track forces, tractive force from the locomotive, and the unsuppressed centrifugal or centripetal forces of inertia. The kinematic motion resistance is determined as the longitudinal force applied to the truck’s pivot in order to balance all external forces.The dependences were obtained of specific kinematic resistance to motion on the motion velocity, base of the truck, radius of the curve, clearances of the wheelset in a rail track, and elevation of the outer rail. In particular, we derived a value of the motion velocity at which the minimum of resistance is observed. As we established, this speed does not match the equilibrium velocity and is 15−20 % lower.The study showed the possibility to predict resistance related to directing the undercarriages by a rail track. This opens up the prospect for choosing rational parameters of undercarriage gear of the rolling stock from the point of view of motion resistance
关键词：railway transport;train traction;resource saving;motion resistance;directing the undercarriages by a rail track
