论文信息 - Limit Wheel Profile for Hunting Instability of Railway Vehicles

Limit Wheel Profile for Hunting Instability of Railway Vehicles

Given a railway vehicle and a track, is it possible to define a wheel limit profile that allows the vehicle to run at a given speed without the occurrence of unsafe hunting motion? Nowadays some railway operators and maintenance staff identify the maximum admissible wear on the profiles comparing the rail equivalent conicity with a limit curve obtained on the basis of experimental evidence. The present paper analyses the relationship between equivalent conicity and the dynamic behaviour of the vehicle in tangent track. This can be used to implement condition – based rail reprofiling strategies.

Stefano Bruni | Francesco Braghin | Laura Mazzola | Stefano Alfi

[1] Giorgio Diana,et al. Experimental and numerical investigation on the derailment of a railway wheelset with solid axle , 2006 .

[2] D J Thompson,et al. Fundamentals of Rail Vehicle Dynamics: Guidance and Stability , 2004 .

[3] O Polach,et al. On non-linear methods of bogie stability assessment using computer simulations , 2006 .

[4] Stefano Bruni,et al. Effect of motor connection on the critical speed of high-speed railway vehicles , 2007 .

[5] Stefano Bruni,et al. LATERAL DYNAMICS OF A RAILWAY VEHICLE IN TANGENT TRACK AND CURVE: TESTS AND SIMULATION , 1999 .

[6] Roger M. Goodall,et al. Non-linear dynamic techniques v. equivalent conicity methods for rail vehicle stability assessment , 2004 .

[7] W. Rulka,et al. NEW ASPECTS OF CONTACT MODELLING AND VALIDATION WITHIN MULTIBODY SYSTEM SIMULATION OF RAILWAY VEHICLES , 1998 .

[8] H. True. On the Theory of Nonlinear Dynamics and its Applications in Vehicle Systems Dynamics , 1999 .