Friction and Wear Performance of Pantograph-Catenary System in Electrified Railways:State of the Art
For pantograph-catenary contact pairs in electrified railways operating in normal and abnormal states,the friction and wear performance of pantograph strip differentiates in a wear cycle,highlighted by differences in wear rate and wear profile.When abnormal wear occurs,the wear rate of pantograph strip will have a multifold increase or even dozens of times increase,but the wear profile acts differently,revealing partial eccentric wear,wavy wear,and penetrating wear.The similarities and differences in current-carrying friction and wear platforms are summarized for pantograph-catenary systems,as well as the advantages and disadvantages of contact and non-contact detection methods.The influential factors and evolution law are analyzed in view of the structure and parameters,train operation parameters,current-carrying parameters and external environment of pantograph-catenary system.Following above work,the state of the art of pantograph-catenary wear models,including mechanism analysis model and data fitting model,are analyzed extensively,and the prospective direction and development trend are put forward,such as,the equivalent simulation of a pantograph-catenary friction pair in real service under laboratory conditions,online high-precision detection of pantograph-catenary wear performance,simulation and optimization of pantograph-catenary wear performance in complex climatic conditions and multi-physical field coupling,pantograph-catenary wear prediction using big data and intelligent algorithms,intelligent operation and maintenance strategies,and capability maintenance in the whole life cycle.
Pantogrpah and catenary systemfriction and wear performancedetection methodprediction model
国家科技期刊平台
NSTL
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