Braking procedure analysis of a pegs-wing ventilated disk brake rotor

Aleksendrić, Dragan; Duboka, Cedomir; Gotowicki, Pier Francesco; Mariotti, Gabriele Virzi’; Nigrelli, Vincenzo

doi:10.1504/ijvsmt.2006.009603

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…However, it can be calculated the values of temperatures numerically with an acceptable degree of errors. Aleksendrić et al showed that the difference between the experimental and numerical results was not exceeded 3.14 % [28]. So, the results that were obtained by numerical analysis are accurate and acceptable.…”

Section: Researchmentioning

confidence: 95%

Investigation of the Penetration and Temperature of the Friction Pair Under Different Working Conditions

Stojanović¹,

Abdullah²,

Schlattmann³

et al. 2020

Tribol. Ind.

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The phenomenon of vehicle braking is very complex, because during the braking process, the heat will be generated on the braking disc and the braking pads. This will cause the penetration in the contacting surfaces. In this research paper, three-dimensional model is developed and validated using finite element technique. It was used ANSYS/Workbench 14.5 software, Transient Structural module to achieve the numerical analysis. During the stopping process, the high temperatures appeared on the braking pads, where the temperature exceeded 150 ℃ when applied pressure is 0.9 MPa. While, when the applied pressure is 1.1 MPa the temperature on the contact surface is exceeded 180 ℃, after just 1.3 s. The important conclusion based on the results is the most significant factors on the distribution and magnitude of temperature that appear on the contact surfaces are applied pressure and the penetration. Besides that, it was found, that the penetration in high measure depends on the temperature, which proves the value of the coherence, which is almost equal to 1.

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Section: Researchmentioning

confidence: 95%

Investigation of the Penetration and Temperature of the Friction Pair Under Different Working Conditions

Stojanović¹,

Abdullah²,

Schlattmann³

et al. 2020

Tribol. Ind.

View full text Add to dashboard Cite

show abstract

“…Aleksendric and Duboka [4] showed that the experimental value of the coefficient of friction varies during the fading procedure. The reason is great influence of the temperature, contact pressure and speed variation on the value of coefficient of friction.…”

Section: --------------mentioning

confidence: 99%

“…It can be divided this thermal curve into two zones: the stable thermal zone and the critical thermal zone. Under the longterm braking conditions, the temperature will increase dramatically, so small cracks can occur on the disc which may lead to the fracture of the disc [4]. As can be seen, when the temperature of the disc exceeds 700 ºC, the coefficient of friction decreases rapidly, and this leads to increase of the stopping time [16].…”

Section: Heat Transfermentioning

confidence: 99%

Pressure influence on heating of ventilating disc brakes for passenger cars

et al. 2020

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The braking system is one of the most important elements in vehicle systems from the aspect of vehicle safety, besides the steering system and the internal combustion engine. During the braking process, the disc and pads absorb a large amount of kinetic energy that converted to heat. Owing to this frictional heating, it is necessary to compute the temperature distribution that will be appeared during the braking process, which is the main goal of this research paper. There are many factors that can be influenced to the distribution of frictional heat generated. One of the significant factors is the applied pressure by the brake pad on the braking disc. The results proved that when increased the applied pressure then the frictional heat generated increased too. It was developed a new finite element model based on observed data from real vehicle. It was used ANSYS/WORKBENCH 14.5 software to perform the numerical analysis, module Transient Structural. Parts that are the most disposed to the thermal stress are braking pads. Also, it was found time period from 0 to 0.1 second is the most critical period during the whole braking period, because in this period, temperature rises rapidly, the maximum temperature occurred at 1.338 seconds, and after that it falls.

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“…For the thermal analysis, the ambient temperature was assumed at 22°C and the disc surface temperature was 100°C prior to braking, which was related with cold braking performance [8]. The current study assumed that heat dissipation from the brake disc to the atmosphere occurs via convection, also known as Newton's law of cooling.…”

Section: Thermal Analysismentioning

confidence: 99%

“…Antanaitis and Rifici [7] proved that the 90-hole cross-drilled pattern improved heat rejection capability of the disc between 8.8% and 20.1% depending on the vehicle speed. Aleksendric et al [8] showed the ability of a ventilated brake disc rotor in dissipating thermal flow by finite element analysis (FEA). Venkitachalam and Maharudrappa [9] conducted flow and heat transfer analysis of six different types of disc configurations by computational fluid dynamics (CFD) and recommended ventilated brake discs for highspeed vehicles.…”

Section: Introductionmentioning

confidence: 99%

Investigation of thermo-structural behaviors of different ventilation applications on brake discs

Düzgün

2012

J Mech Sci Technol

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One of the most common problems related to brake discs is overheating, which negatively affects braking performance especially under the continuous braking conditions of vehicles. Ventilation applications on brake discs can significantly improve the brake system performance by reducing the heating of the discs. In this study, the thermal behaviors of ventilated brake discs using three different configurations were investigated at continuous brake conditions in terms of heat generation and thermal stresses with finite element analysis. The results were compared with a solid disc. Heat generation on solid brake discs reduced to a maximum of 24% with ventilation applications. The experimental study indicated finite element temperature analysis results in the range between 1.13% and 10.87%. However, thermal stress formations were higher with ventilated brake discs in comparison to those with solid discs.

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Braking procedure analysis of a pegs-wing ventilated disk brake rotor

Cited by 7 publications

References 2 publications

Investigation of the Penetration and Temperature of the Friction Pair Under Different Working Conditions

Investigation of the Penetration and Temperature of the Friction Pair Under Different Working Conditions

Pressure influence on heating of ventilating disc brakes for passenger cars

Investigation of thermo-structural behaviors of different ventilation applications on brake discs

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