Comprehensive modeling strategy for thermomechanical tribological behavior analysis of railway vehicle disc brake system

Abstract

A comprehensive modeling strategy for studying the thermomechanical tribological behaviors is proposed in this work. The wear degradation considering the influence of temperature (T) is predicted by Archard wear model with the help of the UMESHMOTION subroutine and arbitrary Lagrangian–Eulerian (ALE) remeshing technique. Adopting the proposed method, the thermomechanical tribological behaviors of railway vehicle disc brake system composed of forged steel brake disc and Cu-based powder metallurgy (PM) friction block are studied systematically. The effectiveness of the proposed methodology is validated by experimental test on a self-designed scaled brake test bench from the perspectives of interface temperature, wear degradation, friction noise and vibration, and contact status evolution. This work can provide an effective way for the investigation of thermomechanical tribological behaviors in the engineering field.

Finite Element Method analysis application in identifying the causes of brake disc failure

“…One of the important problems is the mathematical description of the complex, unsteady heat exchange between the brake surface and the air flowing around it. The heat flux density q exchanged with the environment by convection and by radiation is expressed by the relation [13,26,28]:…”

“…The dependence of α k on temperature is relatively insignificant. For this reason, taking into account these comments, it is justified to assume a linear boundary condition of the third kind for the equation of thermal conductivity in the brake disc [23,26,28].…”

“…In a disc brake, the brake pads detach the aerodynamic boundary layer, thereby significantly increasing heat transfer compared to discs where movement is caused by layer friction. The empirical coefficient αk of heat exchange with the environment by convection is presented in relation ( 17) [13,26,28]:…”

Application and Prospect of Wear Simulation Based on ABAQUS: A Review

“…For the effect of temperature, Yin et al [83] proposed a comprehensive modeling approach to predict the thermomechanical tribological behaviors. In view of the lack of consideration of transverse shear stress, Wang [84] used the POD test and hip simulator wear test results to establish a wear model dependent on cross shear and contact pressure.…”