NONLINEAR DYNAMIC RESPONSES OF LOCOMOTIVE EXCITED BY RAIL CORRUGATION AND GEAR TIME-VARYING MESH STIFFNESS
نویسندگان
چکیده
Rail corrugation is usually generated in modern railway transportations, such as high-speed railway, urban and heavy-haul railway. It one of the major excitations to wheel–rail dynamic interaction, which will cause extra vibration noise, failures, or even risk derailment vehicle its components. A dynamics model a locomotive considering traction power from electric motor wheelset through gear transmission employed investigate nonlinear responses locomotive. This couples motions vehicle, track, together. In this model, rail corrugation, contact, time-varying mesh stiffness, backlash are considered. Then, numerical simulations performed reveal The calculated results indicate that different phenomenon can be observed under excitation with amplitude wavelength. high frequency vibrations excited by stiffness modulated low caused corrugation. However, likely vanish chaotic conditions some level increases generally amplitude. lengths have been found more responsible for system, should concerned greatly during operation. Meanwhile, involvement systems between wheelsets excitations.
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ژورنال
عنوان ژورنال: Transport
سال: 2022
ISSN: ['1648-4142', '1648-3480']
DOI: https://doi.org/10.3846/transport.2022.17065