The effects of the friction block shape on the tribological and dynamical behaviours of high-speed train brakes

Xiang, Z.Y.; Chen, W.; Mo, Jiliang; Liu, Q.A.; Fan, Zhiyong; Zhou, Zhongrong

doi:10.1016/j.ijmecsci.2020.106184

Cited by 44 publications

(6 citation statements)

References 58 publications

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“…The cross-section of the brake pads commonly used in the high-speed train brake system had three shapes: circle, pentagon, and hexagon. Considering that the leading edges of the pentagon and hexagon noticeably affect the system vibration [19], the circle was selected as the cross-sectional shape of the friction block sample in the experiment. The friction block was cut from a brake pad of a high-speed train brake system whose diameter was 10 mm and height was 17 mm.…”

Section: Experimental Samplesmentioning

confidence: 99%

“…The results showed that the blocks with holes could better capture the wear debris and reduced brake noise compared with the blocks without perforations. Xiang et al [19] studied the effect of friction block shape on the tribological and dynamic behavior of a high-speed train brake system. The results showed that the contact pressure distribution of the hexagonal friction pad was more uniform, resulting in the lowest contact stiffness, wear, vibration, and noise.…”

Section: Introductionmentioning

confidence: 99%

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Stick–Slip Characteristic Analysis of High-Speed Train Brake Systems: A Disc–Block Friction System with Different Friction Radii

Wang

et al. 2023

Vehicles

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Inspired by the difference in the friction radii of the pads from the high-speed train brake system, stick–slip experiments for a disc–block friction system with different friction radii were carried out via a test device. Based on the test results, the stick–slip vibration characteristics of the disc–block friction system with variation in the friction radius were analyzed, and the corresponding Stribeck model parameters in exponential and fractional forms were identified. The experimental results show that with an increase in the friction radius the vibration amplitude first increased and then decreased and the frequency of stick–slip vibration increased. The identified Stribeck model parameters show that the decay factors increased, the static friction coefficient decreased, and the dynamic friction coefficient decreased first and then increased as the friction radius increased. Moreover, the identified Stribeck model in an exponential form can more accurately reflect the stick–slip characteristics of a disc–block friction system than the model in a fractional form. It can be further applied in the investigation of the dynamic behaviors of high-speed train brake systems.

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Section: Experimental Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Stick–Slip Characteristic Analysis of High-Speed Train Brake Systems: A Disc–Block Friction System with Different Friction Radii

Wang

et al. 2023

Vehicles

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“…During the braking process, huge kinetic energy transfers to heat through the frictional contact between the brake disc and friction block. The relative movement at the contact interfaces leads to the generation of friction, accompanied by complex tribological behaviors, such as frictional heat [4][5][6][7][8][9], wear degradation [10][11][12][13][14][15], elastoplastic deformation [16][17][18][19], friction-induced vibration (FIV) [20][21][22][23][24][25], contact status evolution [26], and interface fatigue damage [27]. The interactions between the tribological behaviors are complicated.…”

Section: Introductionmentioning

confidence: 99%

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

Yin

2023

Friction

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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.

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“…Friction-induced vibrations have been extensively studied over the last decades by academics and industrials from two complementary points of view, a purely tribological one [1][2][3][4][5][6] and from a structural dynamic one [7][8][9][10][11][12][13][14][15][16][17][18]. The prediction of the friction-induced vibrations is made complex by its fugitive aspect and its sensitivity to many parameters [19,20] as the environment [21], the wear [22], the material [23], internal contact conditions [24] or the friction contact law [25,26].…”

Section: Introductionmentioning

confidence: 99%

Prediction and analysis of quasi-periodic solution for friction-induced vibration of an industrial brake system with the Generalized Modal Amplitude Stability Analysis

Denimal

Sinou

Nacivet

2021

Journal of Sound and Vibration

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Brake squeal is a major issue for car manufacturers as it is the reason for the return of many vehicles to customer services, representing high costs for the companies. To meet customer's expectations, squeal must be accurately predicted during the design process. In the context of the automotive industry, squeal usually refers to friction-induced vibrations that generate noise. The main methodology employed nowadays for friction-induced vibrations prediction of industrial systems is the well-known complex eigenvalue analysis (CEA) despite its limitations. The latter suffers from an under-or over-predictive aspect and the vibration amplitudes cannot be estimated. A recent approach, called the generalised modal amplitude stability analysis (GMASA), has been developed as a complementary approach of the CEA to identify the modes involved in the nonlinear dynamic response of systems subjected to friction-induced vibrations and to approximate the quasi-periodic oscillations. The objective of this paper is to predict the nonlinear dynamic response of a full industrial automotive brake system. The GMASA is employed to predict its nonlinear dynamic response. It is demonstrated that when the CEA predicts a single unstable mode, two are actually involved in the nonlinear dynamic response. The quasi-periodic oscillations are analysed, as well as the evolution of the contact conditions at the pad/disc interface and exhibits the presence of micro-impacts.

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The effects of the friction block shape on the tribological and dynamical behaviours of high-speed train brakes

Cited by 44 publications

References 58 publications

Stick–Slip Characteristic Analysis of High-Speed Train Brake Systems: A Disc–Block Friction System with Different Friction Radii

Stick–Slip Characteristic Analysis of High-Speed Train Brake Systems: A Disc–Block Friction System with Different Friction Radii

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

Prediction and analysis of quasi-periodic solution for friction-induced vibration of an industrial brake system with the Generalized Modal Amplitude Stability Analysis

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