Research on Static Contact Behavior and Simulation for Rail Grinding by Abrasive Belt Based on Concave Type Contact Wheel

doi:10.3901/JME.2018.14.152

Abstract

Abstract: To reveal the static contact behavior for rail grinding by abrasive belt based on concave type contact wheel, the relationship of contact geometry between the concave type contact wheel and the rail surface is analyzed and then the macro static contact theory model is built. Through the integral method for the two directions of rail cross section and longitudinal section using Hertz contact theory, the boundary curve function and the stress distribution function of contact area are obtained, by which the influence of grinding pressure and diameter of contact wheel on contact area contour and stress distribution is gotten. Results by theoretical calculation and finite element simulation show that the contact area contour appears a closed graph surrounded by four curves, which is significantly different from the traditional elliptical contact; the maximum contact stress increases with the grinding pressure increasing, and decreases with the diameter of contact wheel increasing; the simulation data and the theoretical calculation data agree well, which verifies correctness and validity of the theory model.

Key words: abrasive belt, contact, rail grinding, simulation, stress

CLC Number:

TG742

FAN Wengang, CHENG Jifa, WU Yuefeng, LI Jianyong, SONG Xiaoyang. Research on Static Contact Behavior and Simulation for Rail Grinding by Abrasive Belt Based on Concave Type Contact Wheel[J]. Journal of Mechanical Engineering, 2018, 54(14): 152-158.

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