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Vol.20, No.2, 2020, pp. 143–147 |
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DETERMINING THE KINEMATIC PARAMETERS OF RAILCAR MOTION IN HUMP YARD RETARDER POSITIONS Khabibulla T. Turanov1, Shukhrat U. Saidivaliev2, Daurenbek I. Ilesaliev2 1) ‘Stations, Junctions and Freight Work’ Dep., Ural State University of Railway Transport, Yekaterinburg, RUSSIA2) ‘Transport Logistics and Service’ Dep., Tashkent Institute of Railway Engineers, Tashkent, UZBEKISTAN email: saidivaliev.tirte@bk.ru
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Abstract Hump yards perform the engineering function of train shunting and departure, moving and accumulating cars in the yard, etc. Hump yard designs, in order to ensure safe railway operations, should take into account the kinetic dynamics of rolling stock and individual railcars. The theorem of change in the kinetic energy of a point object is used to obtain formulas for determining the braking distance of a railcar in the braking area of a hump yard. This research also shows why using the formula for the free fall rate of a body accounting for the inertia of rotating parts, to determine a railcar’s velocity in the braking zone, is incorrect. Results obtained show accuracy in the range from 3.7 to 1.52 %, which is within an acceptable window of accuracy for engineering calculations. Keywords: hump yard, railcar braking distance, kinetic energy, momentum, kinematic parameters |
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full article (333 kB)
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