Analysis of Wear Behavior Dynamic Evolution on Railway Brake Pad

doi:10.3901/JME.2021.18.204

Abstract

Abstract: Wear is one of the main damage forms for train brake blocks, experimental approach is the main research method for the study of brake block wear. A numerical method is presented for solving the problem of train brake block wear with the help of finite element software ABAQUS and self-written wear subroutine, Archard wear model is embed into the tribological solution on brake interface, the simulation of the accumulation and dynamic evolution process of brake block wear are realized by calculating the response status step by step. Meanwhile, arbitrary lagrage-Eurler(ALE) technique is employed for remeshing, in order to overcome the computational efficiency and convergence limitations resulted from mesh quality and maximum wear depth. Finally, a secondary development in ABAQUS Post-processing is carried out by Matlab and Fortran to obtain wear information directly, the effectiveness of the method is verified with brake bench tests. Using this method, the effect of friction block geometry on friction force, contact inclination angle, contact area, contact pressure and surface wear is investigated. The results indicate that a suitable friction block geometry can improve the service tribological feature of railway friction brake system, reduce the wear of brake block and enhance the service reliability of the brake system. The theoretical support can be provided for the design optimization of railway brake block shape in the future.

Key words: brake pad, railway train, wear simulation, tribological behavior, finite element analysis

CLC Number:

TH117

YIN Jiabao, LU Chun, QUAN Xin, MO Jiliang. Analysis of Wear Behavior Dynamic Evolution on Railway Brake Pad[J]. Journal of Mechanical Engineering, 2021, 57(18): 204-213.

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