Modeling and Simulation of Rail Grinding Wheel Considering the Random Characteristics

doi:10.3901/JME.2023.08.213

Abstract

Abstract: The essence of rail grinding is the material removal process of the rail surface by the grinding stones. The performance of the grinding stone directly affects the efficiency and quality of the rail grinding operation. Based on the randomness of actual grinding wheel and its abrasive volume, a finite element modeling(FEM) method with random characteristics and high abrasive volume fraction is established. FEM models are developed dependence on thermo-mechanical coupling method and the overall model of grinding wheel with high abrasive volume. These models can better simulate the actual grinding process and the structure of grinding wheels, which considered the randomness of abrasive size, shape, and distribution.The material removal mechanism and the grinding temperature during the grinding process, the residual stress on the rail surface after grinding and the compressive performance of the overall grinding stone were explored through the simulation. These methods can be applied to the research of rail grinding mechanisms and the development of grinding wheel.

Key words: rail grinding, rail grinding wheel, random property, FEM model

CLC Number:

U211

YUAN Yong-jie, ZHANG Wu-lin, LIU Zhang-bao, FAN Xiao-qiang, ZHU Min-hao. Modeling and Simulation of Rail Grinding Wheel Considering the Random Characteristics[J]. Journal of Mechanical Engineering, 2023, 59(8): 213-223,234.

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