Open AccessResearch of the impact of geometric unevenness of the railway track on the dynamic parameters of the railway rolling stock with two-stage spring suspension
Author(s) -
Andriy Kuzyshyn,
С. А. Кострица,
L. V. Ursulyak,
Andriy Batig,
J. Sobolevska,
Oleg M. Voznyak
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/664/1/012024
Subject(s) - track (disk drive) , amplitude , suspension (topology) , critical speed , range (aeronautics) , railway line , mathematical model , spring (device) , structural engineering , mechanics , engineering , vibration , mathematics , physics , mechanical engineering , acoustics , optics , statistics , civil engineering , aerospace engineering , homotopy , pure mathematics
The paper studies the possibility of using previously developed by the authors spatial mathematical model of the modern diesel train DPKr-2 for parameters determination, with the help of which the dynamic properties of the mechanical part are evaluated. The dependences of maximum accelerations of the body in the vertical and horizontal planes, the coefficients of vertical and horizontal dynamics both in the primary and in the secondary suspension on the speed of the car movement, the amplitude and the length of geometrical unevenness of the railway track were obtained. It is established at what speeds, depending on the parameters of geometrical unevenness of the railway track, the phenomenon of resonance and danger for the diesel train car movement appears. For a particular length of geometrical unevenness, the maximum permissible value of its amplitude over the entire range of speed movement, where the coefficients of vertical and horizontal dynamics in the primary suspension do not exceed permissible limits, has been studied. The adequacy of the mathematical model is checked by comparing the results obtained during calculations with the experimental ones.