Title Influence of high frequency vibrations on the wheel-rail creep curve at high speeds
Author Yin, S
Zhao, X
Wen, Z
Jin, X
Conference 12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, 4-7 September 2022, Melbourne, Victoria, Australia
Publication Date 2022
Location ARRB library
Abstract An explicit finite element model is developed to simulate the quasi-steady and transient wheel-rail rolling contact over tangent and curved tracks at a speed up to 400 km/h, and derive the creep curves. For transient curves, short irregularities with a wavelength range of 10 ~ 1000 mm are applied on one rail, i.e., unilateral corrugation is simulated. The quasi-steady creep curve is first validated against those from traditional theories implied the steady rolling assumption. Then, the transient creep curves, being significantly different from the quasi-steady ones, are studied in terms of variations, and their traction, speed and wavelength dependence.
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CM 2022_Yin
Subjects Railway track
Rolling contact
Finite element method
Curve
Creep
Vibration
Modelling