Abstract
Authors describe formation mechanism of long irregularities of the railway track and the importance of their elimination for the track facilities. Based on the results of freight train operation modeling on long irregularities in the traction mode, an analysis of the processes occurring during the motion of heavy trains along a track with such deviations was carried out, modeling was carried out on the basis of the “Universal Mechanism” software package. Based on the results of the calculation, interaction between the track and the rolling stock in the vertical plane was assessed in terms of the magnitude of the vertical force and coeffcients: dynamics, stability margin, Nadal, unloading (in percent) of axle springs of freight car springs. Article analizes the nature of the infuence of the irregularity slope on the decrease in the vertical force transmitted from the wheel to the rail and the change in the traction force on the dynamics of freight cars in the train and passing on long irregularities of the longitudinal profle through the indicators of the vertical force.
Highlights
Based on the results of freight train operation modeling on long irregularities in the traction mode, an analysis of the processes occurring during the motion of heavy trains along a track with such deviations was carried out, modeling was carried out on the basis of the “Universal Mechanism” software package
Based on the results of the calculation, interaction between the track and the rolling stock in the vertical plane was assessed in terms of the magnitude of the vertical force and coefficients: dynamics, stability margin, Nadal, unloading of axle springs of freight car springs
Article analizes the nature of the influence of the irregularity slope on the decrease in the vertical force transmitted from the wheel to the rail and the change in the traction force on the dynamics of freight cars in the train and passing on long irregularities of the longitudinal profile through the indicators of the vertical force
Summary
Значения сил были получены при расчете в УМ движения поезда по длинной неровности, находящейся на уклоне, зарегистрированном в месте схода вагонов на Московской железной дороге Дальнейшие исследования были сфокусированы на оценке непосредственно показателей взаимодействия пути и подвижного состава в вертикальной плоскости, а именно: минимальной для каждого колеса величины вертикальной силы, величин коэффициентов динамики, запаса устойчивости, Надаля, величин процента обезгрузки буксовых пружин рессорного подвешивания грузовых вагонов. 8. Зависимость минимального значения вертикальной силы от величины продольных сил в автосцепках вагонов в середине поезда. 8 представлена экспоненциальная зависимость минимального значения вертикальной силы от величины продольных сил в автосцепках вагонов в середине поезда. При этом наихудшие показатели динамического взаимодействия пути и подвижного состава для всех трех рассмотренных случаев были получены в местах наиболее высоких по амплитуде пиков длинных неровностей, что обосновывает актуальность исследований влияния наличия коротких неровностей продольного профиля на фоне возникновения длинных. Значения коэффициентов, характеризующих устойчивость колеса на рельсе, лежали в пределах допустимых значений
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
