Calculation-empirical estimation of the vertical dynamic coefficient in the event of additional oscillations of the car

According to the results of derailment investigations, ensuring train traffic safety was found be a paramount and urgent task. The growth freight density speed movement on railway network leads significant increase in number damaged wheels rails and, as result, an level force interaction during load transfer, which provokes likelihood wagon derailment. operation rolling stock railways is determined mainly by presence car stability margin, depends vertical dynamics coefficient kdv, changes throughout entire time accordingly, technical condition track whole. addition each element this “wheel-rail” system many factors, therefore, operational car, mechanical system, its sprung non-sprung parts. calculation schemes used study unperturbed motion are non-linear systems. Non-linearities occur due gaps axle boxes, side bearings similar connections, non-linearity forces with at present, also some types spring suspension. When moving curve, cart known perform complex movement. rotation transverse displacement bogie prevented frictional between rails. affected part centrifugal force, unbalanced elevation outer rail depending movement, well guiding from rail. It process appearance horizontal (relative direction movement) forces, wheel flanges nature perturbed respect axis path At relatively low speed, that arise after wearing out when rest against heads, certain irregularities, not dangerous for wheel-rail system. But these so there threat increases.