Abstract
The problem of wheel and rail wear in railway transport generates costs of reprofiling and availability of vehicles and infrastructure. One of the possibilities of wear minimizing is decreasing of the friction coefficient in wheel-rail contact by means of lubricants. Such a solution has drawbacks from which the most crucial are: decrease of tractive/braking forces and difficulties with the precise spreading of the lubricant. These disadvantages may be avoided by modern, innovative self-lubricating coatings, applied at the production stage on the wheel flanges. The aim of the study is to investigate the effect of self-lubricating coatings on a rail vehicle's dynamic behaviour, safety against derailment and predicted wheel wear. The numerical study was performed using the wagon multibody model with simulated self-lubricating coating on wheel flanges.
Highlights
Since the beginning of the rail transport expansion, wheel and rail wear has been one of the most significant technical problems in this mode of transport
Another adverse feature, related to the worn wheels’ profiles, is affecting the vehicle dynamic behaviour, which may lead to reduction of safety against derailment [1]
The forces generated in the contact area and transmitted to both subsystems are vital from the point of view of a vehicle dynamics, since in general, B25 they determine vehicle’s behaviour in track and properties such as running stability and wear of wheels and rails
Summary
Since the beginning of the rail transport expansion, wheel and rail wear has been one of the most significant technical problems in this mode of transport. Wear is a great economic burden for vehicles and tracks operators, yet it gives rise to the additional actions for wheels reprofiling and rails grinding, it may limit the availability of infrastructure and the rolling stock Another adverse feature, related to the worn wheels’ profiles, is affecting the vehicle dynamic behaviour, which may lead to reduction of safety against derailment [1]. The aim of the presented study was to investigate dynamic responses and predict the wear rate of a two-axle goods wagon multibody model with simulated self-lubricating layers applied on wheels’ flanges This novel application of coating reducing friction required to include its mathematical description in the wheel-rail contact modelling. DYNAMIC PROPERTIES AND WEAR ANALYSIS OF A RAIL VEHICLE WITH WHEELS’ SELF-LUBRICATING
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