Towards a better understanding of brake friction materials

Österle, Werner; Kloß, H.; Urban, I.; Дмитриев, А. И.

doi:10.1016/j.wear.2006.12.020

Cited by 104 publications

(46 citation statements)

References 14 publications

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“…It is supposed that main energy conversion happens at these plateaus [37]. The second approach [38,56,64,65,60] relates the brake performance to the third body layers formed during brake Figure 15: Schematic representation of the first approach showing the primary and secondary contact plateaus, according to [58,17]. [38].…”

Section: Tribological Interfacementioning

confidence: 99%

Overview of disc brakes and related phenomena - a review

Rashid

2014

IJVNV

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Disc brakes have evolved over time to be a reliable method of decelerating and stopping a vehicle. There have been different designs of disc brake systems for different applications. This review gives a detailed description of different geometries of the components and the materials used in a disc brake system. In spite of all the improvements, there are still many operational issues related to disc brakes that need to be understood in a greater detail and resolved. There has been a lot of research going on about these issues and at the same time different methods are being proposed to eliminate or reduce them. There has also been an intensive fundamental research going on about the evolution of tribological interface of disc-pad system. One major purpose of the present paper is to give a comprehensive overview of all such developments.

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Section: Tribological Interfacementioning

confidence: 99%

Overview of disc brakes and related phenomena - a review

Rashid

2014

IJVNV

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“…In [56], the cellular automata model is extended to render the surface topography in three dimensions in order to comprehend the tribological behaviour under different load conditions. In [58] cellular automata are used to investigate the behaviour of the hard patches on a nanoscale length under the influence of different pad chemical compositions.…”

Section: An Extension Of the Model-based Approach-the Cellular Automamentioning

confidence: 99%

“…This tool is suitable for the visualization of friction processes on the nanometre scale, such as topography modification, film degradation and mass mixing. In [58,59] the frictional behaviour against the local contacts in an automotive brake system has been analysed on the basis of computer simulation by means of the MCA. This technique has been applied with satisfactory results, showing a good qualitative correspondence between the model results and the experimental evidence.…”

Section: An Extension Of the Model-based Approach-the Cellular Automamentioning

confidence: 99%

Survey on Modelling and Techniques for Friction Estimation in Automotive Brakes

et al. 2017

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Abstract:The increased use of disc brakes in passenger cars has led the research world to focus on the prediction of brake performance and wear under different working conditions. A proper model of the brake linings' coefficient of friction (BLCF) is important to monitor the brake operation and increase the performance of control systems such as ABS, TC and ESP by supplying an accurate estimate of the brake torque. The literature of the last decades is replete with semi-empirical and analytical friction models whose derivation comes from significant research that has been conducted into the direction of friction modelling of pin-disc couplings. On the contrary, just a few models have been developed and used for the prediction of the automotive BLCF without obtaining satisfactory results. The present work aims at collecting the current state of art of the estimation techniques for the BLCF, with special attention to the models for automotive brakes. Moreover, the work proposes a classification of the several existing approaches and discusses the relative pro and cons. Finally, based on evidence of the limitations of the model-based approach and the potentialities of the neural networks, the authors propose a new state observer for BLCF estimation as a promising solution among the supporting tools of the control engineering.

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“…To reach this goal, a model that describes the physical behaviour of the contact situation in disc brakes is needed. Numerical simulations of the friction and wear behaviour of disc brakes have been studied with different approaches such as movable cellular automata (MCA) [13] and finite element analysis (FEA) [14]. In the MCA method [13], a model to numerically calculate the third body behaviour on a nanoscopic scale is used.…”

Section: Introductionmentioning

confidence: 99%

A Cellular Automaton Approach to Numerically Simulate the Contact Situation in Disc Brakes

2011

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Since brake wear is an important contributor to the concentration of airborne particles in urban atmospheres, it is important to increase our understanding of the origin of these particles. The contact situation between the pad and disc is complicated. Metal fibres in the pad (or other hard materials) form stable contact plateaus, which carry the main part of the load. A flow of wear particles in the boundary layer between the pad and disc partially stack up against these plateaus (and increase their area), and some will escape from the contact and become airborne. The purpose of this article is to investigate the possibility to numerically simulate the contact situation in the boundary layer between the pad and disc and the amount of wear that leaves the contact using a cellular automaton approach. To do so, the contact pressure, pad temperature and wear are determined in that order. Based on these results, the creation, growth and destruction of contact plateaus are simulated using a cellular automaton model. Finally, the amount of wear that leaves the contact is determined. The simulated behaviour of the contact situation correlates qualitatively with experimental observations found in the literature.

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Towards a better understanding of brake friction materials

Cited by 104 publications

References 14 publications

Overview of disc brakes and related phenomena - a review

Overview of disc brakes and related phenomena - a review

Survey on Modelling and Techniques for Friction Estimation in Automotive Brakes

A Cellular Automaton Approach to Numerically Simulate the Contact Situation in Disc Brakes

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