A Model for the Estimation of Brake Interface Temperature

Grkić, Aleksandar; Mikluc, Davorin; Muždeka, Slavko; Arsenić, Živan; Duboka, Cedomir

doi:10.5545/sv-jme.2014.2364

Cited by 9 publications

(10 citation statements)

References 12 publications

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“…The research was also mostly concerned with rotating discs, with analytical methods applied initially to a geometrically perfect disc shape (not an actual brake disc) rotating in still air [3], and in a cross flow [4] and [5]. Heat dissipation was experimentally investigated in the past for brake discs installed on vehicle [6] and [7] or inertia dynamometer [8], with the aim of establishing relationships and finding effective solutions in predicting brake disc temperatures. The ability to model the actual brake geometry came with the development of numerical methods (finite element and finite difference), but the complexity of boundary conditions still required substantial experimental work in establishing and validating temperature prediction procedures.…”

Section: Literature Reviewmentioning

confidence: 99%

Heat Dissipation from Stationary Passenger Car Brake Discs

Topouris¹,

Stamenković²,

Olphe-Galliard³

et al. 2019

SV-JME

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The paper presents experimental investigation of the heat dissipation from stationary brake discs concentrated on four disc designs, a ventilated disc with radial vanes, two types of ventilated discs with curved vanes - a non-drilled and cross-drilled disc, and a solid disc. The experiments were conducted on a purpose built Thermal Spin Rig and provided repeatable and accurate temperature measurement and reliable prediction of the total, convective and radiative heat dissipation coefficients. The values obtained compare favourably with Computational Fluid Dynamics results for the ventilated disc with radial vanes and solid disc, though the differences were somewhat pronounced for the ventilated disc. The speeds of the hot air rising above the disc are under 1 m/s, hence too low to experimentally validate. However, the use of a smoke generator and suitable probe was very useful in qualitatively validating the flow patterns for all four disc designs. Convective heat transfer coefficients increase with temperature but the values are very low, typically between 3 and 5 W/m2K for the disc designs and temperature range analysed. As expected, from the four designs studied, the disc with radial vanes has highest convective heat dissipation coefficient and the solid disc the lowest, being about 30% inferior. Convective heat dissipation coefficient for the discs with curved vanes was about 20% lower than for the disc with radial vanes, with the cross drilled design showing marginal improvement at higher temperatures.

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Section: Literature Reviewmentioning

confidence: 99%

Heat Dissipation from Stationary Passenger Car Brake Discs

Topouris¹,

Stamenković²,

Olphe-Galliard³

et al. 2019

SV-JME

View full text Add to dashboard Cite

show abstract

“…Therefore, in this study, the brake pad used in a Malaysian national car was selected for the design consideration of the EWB and particularly the wedge angle. By referring to the SAE standard on brake pad [22] to [25], the E code shown on the pad indicates that the coefficient of friction of the pad lies between 0.25 to 0.35, as listed in Table A1 in the Appendix.…”

Section: The Fixewbmentioning

confidence: 99%

Modelling and Control of a Fixed Calliper-Based Electronic Wedge Brake

Ahmad¹,

Hudha²,

Mazlan³

et al. 2017

SV-JME

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This paper presents a new design of an electronic fixed calliper-based wedge brake system. The movement of both sides of the brake piston is activated by a wedge block mechanism. The proposed fixed calliper-based electronic wedge brake system is a class of hydraulic-free device. The mechanism consists of two sets of wedge blocks, a ball screw drive shaft, a sliding beam and an electric motor. In this mechanism, the rotation of the shaft of the electric motor is converted into linear motion by using a ball screw drive shaft while the linear motion of the drive shaft will force the sliding beam to be displaced linearly. This will activate the wedge mechanism, which will cause the pad to be displaced tangentially to the disc brake. The movement of the pad in pressing the disc will generate clamping force and produce brake torque when the wheel rotates. In this study, the mathematical model of the system that generates the clamping force was identified. The model was based on a second order transfer function. The proposed mathematical model was then validated experimentally using a brake test rig installed with several sensors and input-output (IO) device. The performance of the brake mechanism in term of rotational input of the drive shaft and clamping force produced by the brake were observed. Accordingly, a torque tracking proportional-integral-derivative (PID) control of the system was proposed and studied through simulation and experiment. Comparisons between experimental results and model responses were made. It is found that the trend between simulation results and experimental data are similar, with an acceptable level of error. Keywords: fixed calliper-based electronic wedge brake, clamping force system modelling and validation, torque tracking control, hardware-in-the-loop-simulation Highlights • This paper presents the modelling and validation of a fixed calliper-based electronic wedge brake. • It also discusses on the effectiveness of the model in order to develop a good control strategy for the FIXEWB. • Based on the developed control strategy, the effectiveness of the proposed torque tracking control of the FIXEWB was studied and presented. • The control strategy developed is based on a PID controller.

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“…Brake heating is an important and complicated process. The results of laboratory and simulation tests show that brake discs and pads are the elements that are subjected to the biggest amounts of heat [8][9][10][11]. The heat generated during braking, its speed of transfer, as well as the value of the coefficient of friction (COF), strictly depend on the type of materials used in the production of the braking system's components [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Impact of Operating Time on Selected Tribological Properties of the Friction Material in the Brake Pads of Passenger Cars

Borawski

2021

Materials

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Braking systems have a direct impact on the safety of road users. That is why it is crucial that the performance of brakes be dependable and faultless. Unfortunately, the operating conditions of brakes during their operating time are affected by many variables, which results in changes in their tribological properties. This article presents an attempt to develop a methodology for studying how the operating time affects the value of the coefficient of friction and the abrasive wear factor. The Taguchi method of process optimization was used to plan the experiment, which was based on tests using the ball-cratering method. The results clearly show that the degree of wear affects the properties of the friction material used in the production process of brakes.

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A Model for the Estimation of Brake Interface Temperature

Cited by 9 publications

References 12 publications

Heat Dissipation from Stationary Passenger Car Brake Discs

Heat Dissipation from Stationary Passenger Car Brake Discs

Modelling and Control of a Fixed Calliper-Based Electronic Wedge Brake

Impact of Operating Time on Selected Tribological Properties of the Friction Material in the Brake Pads of Passenger Cars

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