Effect of Heat Treatment on Crack Propagation and Performance of Disk Brake with Cross Drilled Holes

Hong, Yunhwa; Jung, Taeksu; Cho, Chongdu

doi:10.1007/s12239-019-0017-8

Cited by 3 publications

(5 citation statements)

References 6 publications

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“…In recent years, the results of finite element analysis are often more accurate. The current finite element thermal analysis of brakes, mainly about brake thermal stress study, 18 brake squeal study, 42 thermal crack study, 43 and structure optimization, 44 provides a lot of theoretical support for the optimal design of disc brakes.…”

Section: Finite Element Methodsmentioning

confidence: 99%

“…The current research methods mainly include brake interface temperature test, 25 analytical calculation, 26–31 and numerical analysis. 32–92 Among them, the experimental exploration method is effective but costly, the analytical calculation of temperature field is accurate but difficult to solve, and the numerical analysis uses numerical methods to find the approximate solution, which is not very accurate, but with the continuous development of computers, the...…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, numerical analysis has become an important and indispensable method for studying the temperature field of the disc brake interface. There are many numerical analysis methods, such as finite difference method, 32–40 finite element method, 41–88 boundary element method, 89 and so on. Among them, the finite element method is the most commonly used, but in specific applications, the established thermal numerical model, the numerical calculation method used, the loading boundary conditions, and the various forms, each method has its own unique characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Research progress of temperature field calculation of disc brake braking interface based on numerical analysis

Wang

Fang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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Disc brakes are the most widely used key components in the braking system of various types of machinery and equipment. When it works, it converts kinetic energy into thermal energy, which will make the braking interface overheat, thus leading to thermal recession of the brake disc and brake pad, which will eventually seriously affect the service life of the machine. The study of temperature changes at the working interface of disc brakes during braking is of great significance to the selection of brake friction pairs and the setting of braking parameters, and is an important theoretical guarantee for improving the service life of brakes. Currently, there are extensive researches on the analysis of temperature fields at the working interface of disc brakes. This paper summarizes the latest numerical research progress of the friction interface temperature field of disc brakes, and evaluates the research status of the friction interface temperature field model, temperature field solution method, and thermodynamics. The review finds that the current numerical method has become the most common method for conducting thermal analysis of disc brakes. The finite element analysis based on thermal modeling, thermal-mechanical coupling methods, and temperature distribution is able to provide more research basis for studying the thermal failure of brake friction pairs, thermal damage mechanisms, and friction material wear mechanisms. Improving the accuracy of the thermal model calculation will be an important research direction for the future numerical analysis of the temperature field of disc brakes.

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Section: Finite Element Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Research progress of temperature field calculation of disc brake braking interface based on numerical analysis

Wang

Fang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Friction brakes convert a vehicle's kinetic energy to predominantly thermal energy [1,2]. The frictional force is caused by the brake pads' force applied on the brake discs.…”

Section: Introductionmentioning

confidence: 99%

“…Gradually, these cracks expand, and thus, while braking, the brake disc may crack [43]. The risk of cracking may also be higher if the brake disc is equipped with cooling holes, as mentioned in the publication [1].…”

Section: Introductionmentioning

confidence: 99%

Impact of the Choice of Available Brake Discs and Brake Pads at Different Prices on Selected Vehicle Features

2022

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The purpose of a road vehicle’s friction brakes is to convert a vehicle’s kinetic energy to thermal energy. When doing so, the brakes should not be heated to such temperatures at which their efficiency could be reduced. The objective of the measurements in this article is to assess the ability of passenger brakes’ spare parts, brake discs and brake pads to meet the requirements for brakes. For the experimental measurements, brake discs and brake pads of high, middle and low prices were selected from advertisements intended for a particular vehicle. The measurements were performed via driving test measurements as well as under laboratory conditions. Driving test measurements determined the brake distance and mean fully developed deceleration of the brake components of all three price categories. On the other hand, the dependence between the effort to control the steering and the brake force, as well as the temperature of brake discs during repeated interrupted braking and continuous uninterrupted braking, were determined under laboratory conditions. Attention was also given to prevention against corrosion. The results show a sufficient ability of all the brake pads and brake discs tested to generate braking force under common conditions. However, when using the lowest-priced brake discs and brake pads, a substantial reduction in their efficiency can occur if braking intensively or over a long period.

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Brake-Disc Holes and Slit Shape Design to Improve Heat Dissipation Performance and Structural Stability

Park

Lee²,

Kim

et al. 2022

Applied Sciences

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A brake disc decelerates the vehicle through friction with the brake pads. When the brake system is overheated, brake fade can occur, in which the friction coefficient drops significantly. Additionally, an over-heated brake system may cause vapor lock, in which the brake hydraulic fluid is vaporized. These phenomena can lead to the loss of braking power and cause a fatal accident. Therefore, brake systems must have stable braking and heat dissipation performance. Having through-holes and slits on the friction surface of the rotor has been adopted to improve the heat dissipation performance, but the holes become stress points and potentially cause cracks. Therefore, brake systems should be designed to have structural stability as well as good heat dissipation. In this study, finite element (FE) modeling was developed to analyze the structural stability and heat dissipation performance of a brake system, and structural and thermal simulations were performed in ANSYS, a CAE software package. In addition, to minimize concentrated stress and temperature, optimal design of the shape and pattern of holes and slits was carried out using PIAnO, an integrated optimal design software package. The first step of design optimization was performed while considering the shape and pattern of the disc holes and slits as design factors. Among the design factors, those with the largest effects on the objective functions were found and set as new design factors to perform the second step. The designs were compared to existing discs. Through the optimization presented in this paper, it is expected that the performance of the braking system will improve and the life of the brake parts will be increased.

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Effect of Heat Treatment on Crack Propagation and Performance of Disk Brake with Cross Drilled Holes

Cited by 3 publications

References 6 publications

Research progress of temperature field calculation of disc brake braking interface based on numerical analysis

Research progress of temperature field calculation of disc brake braking interface based on numerical analysis

Impact of the Choice of Available Brake Discs and Brake Pads at Different Prices on Selected Vehicle Features

Brake-Disc Holes and Slit Shape Design to Improve Heat Dissipation Performance and Structural Stability

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