The Thermal Performance of Automotive Disc Brakes

Limpert, Rudolf

doi:10.4271/750873

Cited by 38 publications

(21 citation statements)

References 3 publications

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“…Thermal analysis of the disc has been a recurring topic of interest, leading to much advancement. Studies on thermal analysis of the disc are categorized as either numerical analysis methods using heat division based on transient analysis for semi-infinite solid [1][2][3][4][5][6][7][8][9] or those using the finite element method with consideration of the frictional coefficient between the pad and disc as well as the contact pressure [10,11].…”

Section: Introductionmentioning

confidence: 99%

Development of a numerical method to predict the alpine test result

Jun

Park

Jung

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part D:

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The alpine test, which is carried out by observing the temperature change on the brake parts of a vehicle during a high-mountain (the Gross Glockner Mountain) descent, is attracting much attention in Europe as it is conducted in extreme conditions. Consequently, many vehicle manufacturers targeting globalization are making an effort to comply with the standards of the alpine test. The test focuses on the determination of the maximum temperature of the disc and brake fluid. While rolling down a high mountain, the brake system experiences a rapid temperature change due to repetitive or continuous braking. This may in turn lead to symptoms such as fade, thermal judder, thermal crack, and vapour lock. The temperature rise is the result of the transfer of the frictional heat between the disc and pad to the brake parts. This study proposes a numerical method for predicting the temperature change of the brake system by using frictional heat division and one-dimensional heat transfer. This method can predict the temperature change not only in the disc but also in the brake fluid. Using the presented method, the alpine test result is predicted and subsequently validated by comparison with the reported experimental data.

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Section: Introductionmentioning

confidence: 99%

Development of a numerical method to predict the alpine test result

Jun

Park

Jung

et al. 2008

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Consequently, the present study focuses on a brake disc rotating in an infinite environment, without considering the aforementioned additional influences. Such a scheme has been adopted in most previous studies and is believed to be reasonable at the preliminary design stage for comparative investigations [4,5,[13][14][15][17][18][19][20][21][22][23][24][25][26]29,31,[33][34][35][36][37][38][39][40]. …”

Section: Test Details In a Rotating Environmentmentioning

confidence: 99%

“…Consequently, this type of brake disc is the most popular choice [16]. Numerous studies have been conducted to characterize its thermo-fluidic characteristics [3,14,[24][25][26][27][28][29][30][31] and to improve its cooling performance by modifying the cross-section and arrangement of radial vanes [17][18][19][32][33][34][35][36]. It is demonstrated that cooling flow turns to the counter-rotating direction with respect to the brake disc axis before entering the ventilated channel.…”

Section: Introductionmentioning

confidence: 99%

An X-type lattice cored ventilated brake disc with enhanced cooling performance

Yan

Zhang

2015

International Journal of Heat and Mass Transfer

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“…Solid domain for rotor vanes are not created separately as isothermal wall boundary conditions are specified as 900 K for speeds 1000 and 1500 rpm,1500 K for speed 2000 rpm due to increase in heat on the rotors [6]. The flow through the ventilated brake rotors are quite complex as it involves both rotating and stationary domains.…”

Section: Boundary Condition Setupmentioning

confidence: 99%

“…As each of the rotors investigated have 36 passages, a 20° segment of the rotor is modeled, large enough to avoid the effect of boundary layer [1] [5]. Periodic boundaries are applied to either side of the segment to represent the entire rotor [6]. The rotors are treated as spinning in an infinite environment by a rotating frame of reference and the application of an open boundary condition to the extent of the domain.…”

Section: Boundary Condition Setupmentioning

confidence: 99%

Investigation of Heat Transfer Characteristics of Circular and Diamond Pillared Vane Disc Brake Rotor Using CFD

2017

SDRP-JNMS

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In the present work, an attempt is made to study the effect of vane-shape rotor on the flow-field and heat transfer characteristics for different configurations of vanes for different running speeds using commercial CFD tool. Two types of rotor configurations circular pillared (CP) and diamond pillared radial vane (DP) were considered for the numerical analysis. A rotor segment of 20° was considered for the numerical analysis due to rotational symmetry. The pre processing is carried out with the help of CFD and analysis is carried out using ANSYS. The governing equations namely conservation of mass, momentum and energy are solved for the analysis. The predicted results are validated by the experimental studies available in the literature. The mass flow rate, heat dissipated by the circular pillared vanes are compared with the diamond pillared vanes. The heat dissipation rate through the diamond pillared vanes is more uniform at higher speeds.

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The Thermal Performance of Automotive Disc Brakes

Cited by 38 publications

References 3 publications

Development of a numerical method to predict the alpine test result

Development of a numerical method to predict the alpine test result

An X-type lattice cored ventilated brake disc with enhanced cooling performance

Investigation of Heat Transfer Characteristics of Circular and Diamond Pillared Vane Disc Brake Rotor Using CFD

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