Numerical Analysis of Thermoelastic Instability in Disc Brake System

Jung, Sung Pil; Song, Hyun Seok; Park, Tae Won; Chung, Won Sun

doi:10.4028/www.scientific.net/amm.110-116.2780

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…Ventilated discs are also more controlled when reducing motorbike speed and give adequate torque when braking 20) . Researchers have also linked the air vent shape design to aerodynamic cooling, improving braking effectiveness during braking [21][22][23] . Aside from that, the cross-section shape significantly impacts braking performance 24,25) .…”

Section: Literature Reviewmentioning

confidence: 99%

Experimental & Analytical Investigation for Optimization of Disc Brake Heat Dissipation Using CFD

Agrawal¹,

Khairnar²

2022

Evergreen

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One of a vehicle's most crucial duties is braking. It is critical to design the braking system so that the automobile is still safe when braking. When the brakes are applied, the disc brakes dissipate a heat. The heat dissipation of the brake determines the braking system safety. The present investigation has been intended to estimate the heat dissipation rate of the disc brake; for different proposed disc brake structures using CFD and thermal analysis. The thermal stress has been computed at different load, speed and temperature. The outcome provides essential knowledge of the behavior of the disc airflow, which is critical for comprehending the entire airflow. Both local and global correlations could be established using different visualization techniques. It enables to understand the disc brake thermal stability. The temperature at the interface between pad and disc varies from 36.45°C to 97.8°C as the speed varies from 300 rpm to 1100 rpm and load from 20 N to 80 N. The steady state thermal analysis of a disc rotor was performed in order to evaluate the braking performance of a disc brake under braking conditions. Modelling software has been used to design the brake rotor, and CFD is used to analyse it. It can be reported that numerical, CFD & experimental analysis carried out on the proposed new disc brake design demonstrated optimized heat dissipation.

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Section: Literature Reviewmentioning

confidence: 99%

Experimental & Analytical Investigation for Optimization of Disc Brake Heat Dissipation Using CFD

Agrawal¹,

Khairnar²

2022

Evergreen

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“…The formation of hot spots is caused by high thermal gradients, locally inducing high stresses in the surface structure of the friction pairs. High local temperatures can lead to an unacceptable reduction in braking performance, such as loss of braking or undesirable low-frequency vibrations [9,39,40]. Heat is generated in its friction elements during the braking at high speeds and intense pressure in the brake system.…”

Section: Hot Spot Problemsmentioning

confidence: 99%

Selected Simulation and Experimental Studies of the Heat Transfer Process in the Railway Disc Brake in High-Speed Trains

2023

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The effectiveness of railway brakes strongly depends on their thermal condition. A computer simulation and experimental investigations on a full-scale dynamometric stand were chosen as an adequate analysis of the heat transfer process in brakes. The article introduces a two-dimensional, axisymmetric numerical model of the tested disc brake. Boundary conditions related to the heat generated in the friction brake and heat transferred to the environment are also presented. The transient heat transfer problem was solved using the in-house computer program of the finite element method. The article presents simulations and experimental investigations of the intensive braking of a train with an initial high speed. Temperature responses of the disc brake on the friction surface and at other selected points are shown. In addition, a thermal imaging camera was used to assess the temperature distribution on the friction surface of the disc. The results of experimental and simulation tests were preliminarily compared. Similar maximum temperature values were obtained at the end of braking with a particular discrepancy in temperature responses during the analyzed process.

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“…There are also researcher relate the air vent geometry design with aerodynamic cooling which it can increase the braking performance during braking [22]- [24]. Besides that, the shape of cross section also play important role in optimizing the braking performance [25].…”

Section: Disc Brake Geometrymentioning

confidence: 99%

Thermal analysis on motorcycle disc brake geometry

Talib

Ismail

2017

AIP Conference Proceedings

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Abstract.Braking is a phase of slowing and stop the movement of motorcycle. During braking, the frictional heat was generated and the energy was ideally should be faster dissipated to surrounding to prevent the built up of the excessive temperature which may lead to brake fluid vaporization, thermoelastic deformation at the contact surface, material degradation and failure. In this paper, solid and ventilated type of motorcycle disc brake are being analyse using Computational Fluid Dynamic (CFD) software. The main focus of the analysis is the thermal behaviour during braking for solid and ventilated disc brake. A comparison between both geometries is being discussed to determine the better braking performance in term of temperature distribution. It is found that ventilated disc brake is having better braking performance in terms of heat transfer compare to solid disc.

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Numerical Analysis of Thermoelastic Instability in Disc Brake System

Cited by 5 publications

References 14 publications

Experimental & Analytical Investigation for Optimization of Disc Brake Heat Dissipation Using CFD

Experimental & Analytical Investigation for Optimization of Disc Brake Heat Dissipation Using CFD

Selected Simulation and Experimental Studies of the Heat Transfer Process in the Railway Disc Brake in High-Speed Trains

Thermal analysis on motorcycle disc brake geometry

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