Application of discrete track model in the problems of the rail vehicles
Abstract
In order to study the rail vehicle dynamics considering the application of discrete track model the linear one-axle model with three degrees of freedom corresponding to the fouraxle vehicle is considered. Using D’Alembert’s principle and the principle of virtual power, differential equations of vertical oscillations of the track and the wheelset, the sprung mass of the bogie and body are derived, the oscillation frequencies are found, and the amplitude and phase frequency characteristics connecting the oscillations of the specified masses with the kinematic disturbance are developed. The results of calculations show that the proposed model of vehicle—track interaction permits distinguishing oscillations at frequencies greater than 10 Hz, so in such problems it is necessary to set the disturbance spectrum corresponding to the frequency range of 10 to 100 Hz. Oscillations appearing at frequencies greater than 10 Hz are of great importance in the study of oscillations of freight wagons without axle box guide, as well as in the study of torsional oscillations in locomotive traction gears.
About the Authors
A. N. Savos’kin
Russian University of Transport (RUT MIIT)
Russian Federation
Russian Federation
Anatolii N. Savos’kin, Dr. Sc. Eng., professor of the department, Electric Trains and Locomotives
A. P. Vasil’ev
Russian University of Transport (RUT MIIT)
Russian Federation
Russian Federation
Andrei P. Vasil’ev, Cand. Sc. Eng., associate professor of the department, Electric Trains and Locomotives
G. P. Burchak
Russian University of Transport (RUT MIIT)
Russian Federation
Russian Federation
Genrikh P. Burchak, Cand. Sc. Eng., professor of the department, Theoretical Mechanics
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Review
For citations:
Savos’kin A.N., Vasil’ev A.P., Burchak G.P. Application of discrete track model in the problems of the rail vehicles. Transport of the Russian Federation. 2022;(3):33-36. (In Russ.)
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