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

Stojanović, Nadica; Abdullah, O.I.; Schlattmann, Josef; Grujić, Ivan; Glišović, J.

doi:10.24874/ti.849.02.20.05

Cited by 4 publications

(2 citation statements)

References 21 publications

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“…When the braking speed is significantly reduced, the rate of temperature increasing is also reduced by the joint action of the groove and the heat dissipation bar. It is noticed that the simulated maximum temperatures on the surfaces of brake disks in this study are higher than that simulated by Stojanovic et al, 35 which is due to the structural dimension, material, and braking operation parameters used in the simulations are different. For example, in this study the initial braking angular speed is 117 rad/s and the coefficient of friction is 0.4; while in Stojanovic et al 35 the initial braking angular speed is 107 rad/s and the coefficient of friction is 0.336.…”

Section: Temperature Simulationcontrasting

confidence: 72%

Noise and vibration performance of automotive disk brakes with laser-machined M-shaped grooves

Zhu

Qingyi

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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This work makes use of experimental and numerical studies to investigate the reduction of braking noise and vibrations of brake disks by introducing various M-shaped grooves on the brake disk frictional surfaces. Experiments with a brake test dynamometer have been carried out to compare the braking vibrations and noise of the grooved disks with that of the un-grooved disk. The experimental results demonstrate that disks with grooves significantly reduced braking vibrations and noise at both low and high frequencies, and as the initial braking temperature and braking pressure increased, the reduction effect is further enhanced. The investigation also shows the wear rates of both the grooved disks and brake pads are also significantly reduced. Thermo-mechanical coupled finite element models of the brake pads and disks with and without grooves are developed to investigate the mechanisms of the reduction of braking noise and vibrations by the introduction of grooves on the disk frictional surfaces. The numerical results show that the number of grooves plays an important role in reducing the interface surface temperatures, enhancing heat flux, reducing thermal deformation, changing the contact pressure distribution, and stabilizing the coefficients of friction of the braking sliding contacts. The thermal effects contribute to the wear reduction of both the braking disks and pads, and the reduction of braking noise and vibrations. In addition, both the finite element modal analysis and the experimental modal testing results show that surface grooves increase the modal damping ratio of the disks, which certainly plays a role on the reduction of braking noise and vibrations. This study has significance to the surface modification of brake disks in order to reduce braking noise and vibrations, as well as the wear resistance of brake disks and pads.

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Section: Temperature Simulationcontrasting

confidence: 72%

Noise and vibration performance of automotive disk brakes with laser-machined M-shaped grooves

Zhu

Qingyi

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…The friction thermal problem is solved numerically using the finite element method with COMSOL Multiphysics® 5.5 software. Firstly, the parabolic heat conduction equation was evaluated using the Galerkin's method [13,15] as,…”

Section: Finite Element Simulationmentioning

confidence: 99%

Effect of Frictional Material on Thermal Behavior of Brake System

Mohammed¹,

Hussain²,

Abdullah³

2022

Tribol. Ind.

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The brake system is one of the most important systems in all vehicles. The main objective of this system is to control the vehicle mechanical movement and stopping. Where, it can't drive safely any vehicle without the brake system to control its acceleration rate and its stability. The effective factors that affected the brake performance are the properties of frictional material of pads and disc. The objective of the present work is to study the thermal behavior of the brake system using different types of frictional material for pads and find the optimal one of them. High amount of heat will be generated between the disc and pads during the braking process; may cause quick failure in future. In the present paper, a 3-dimensional thermal transient model of the brake system has been developed using finite element technique (COMSOL Multiphysics® 5.5). Five types of friction materials (St37-2, HCC, G95, LUK, and Tiger) are used in the numerical analyses. The results presented the variation and distribution of contact temperatures of the proposed frictional materials during braking period. The main conclusion based on the obtained results is that the optimal frictional material is HCC material and the poorest one is LUK material.

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Study the influence of repeated braking on the thermal behavior of brake system using experimental work

Stojanović

Grujić²,

Glisovic³

et al. 2022

AIP Conference Proceedings

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

Cited by 4 publications

References 21 publications

Noise and vibration performance of automotive disk brakes with laser-machined M-shaped grooves

Noise and vibration performance of automotive disk brakes with laser-machined M-shaped grooves

Effect of Frictional Material on Thermal Behavior of Brake System

Study the influence of repeated braking on the thermal behavior of brake system using experimental work

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