Design and Simulation of a Novel Wedge Disc Brake

Abstract The brake system of an automobile is composed of disc brake and pad which are co-working components in braking and accelerating. In the braking period, due to friction between the surface of the disc and pad, the thermal heat is generated. It should be avoided to reach elevated temperatures in disc and pad. It is focused on different disc materials that are gray cast iron and carbon ceramics, whereas pad is made up of a composite material. In this study, the CFD model of the brake system is analyzed to get a realistic approach in the amount of transferred heat. The amount of produced heat can be affected by some parameters such as velocity and friction coefficient. The results show that surface temperature for carbon-ceramic disc material can change between 290 and 650 K according to the friction coefficient and velocity in transient mode. Also, if the disc material gray cast iron is selected, it can change between 295 and 500 K. It is claimed that the amount of dissipated heat depends on the different heat transfer coefficient of gray cast iron and carbon ceramics.

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A Multiscale Model of a Disc Brake Including Material and Surface Heterogeneities

SAE International Journal of Passenger Cars - Mechanical Systems ◽

10.4271/2016-01-1911 ◽

2016 ◽

Vol 9 (3) ◽

pp. 1136-1143 ◽

Cited By ~ 7

Author(s):

Philippe Dufrenoy ◽

Vincent Magnier ◽

Yassine WADDAD ◽

Jean-Francois Brunel ◽

Gery DE SAXCE

Keyword(s):

Multiscale Model ◽

Disc Brake

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Numerical Modeling and Simulation Analysis of Temperature Field of Disc Brake on Trains

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.199-200.1492 ◽

2011 ◽

Vol 199-200 ◽

pp. 1492-1495 ◽

Cited By ~ 1

Author(s):

Guo Shun Wang ◽

Rong Fu ◽

Liang Zhao

Keyword(s):

Temperature Field ◽

Temperature Gradient ◽

High Speed ◽

Large Scale ◽

Working Condition ◽

Constant Speed ◽

Brake Disc ◽

Disc Brake ◽

Brake Pad ◽

Finite Element Software

The simulation calculation on the temperature field of the disc brake system on high-speed trains under the working condition of constant speed at 50Km/h is made. A steady-state calculation model is established according to the actual geometric size of a brake disc and a brake pad, and the analog calculation and simulation on the temperature field of the brake disc and the brake pad by using the large-scale nonlinear finite element software ABAQUS are carried out. The distribution rules of the temperature field of the brake disc and the brake pad under the working condition of constant speed are made known. The surface temperature of the brake disc at friction radius is the highest, with a band distribution for temperature. There exists a temperature flex point in the direction of thickness, of which the thickness occupies 15% of that of the brake disc; due to the small volume of the brake pad, the temperature gradient of the whole brake pad is not sharp, and larger temperature gradient occurs only on the contact surface.

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CFD Modeling and Simulation of Aeorodynamic Cooling of Automotive Brake Rotor

Journal of Multiscale Modelling ◽

10.1142/s1756973717500081 ◽

2018 ◽

Vol 09 (01) ◽

pp. 1750008 ◽

Cited By ~ 2

Author(s):

Ali Belhocien ◽

Wan Zaidi Wan Omar

Keyword(s):

Heat Dissipation ◽

Surface Film ◽

Transient State ◽

Cfd Modeling ◽

Disc Brake ◽

Cfd Analysis ◽

Braking System ◽

Airflow Distribution ◽

Ansys Cfx ◽

Brake Rotor

Braking system is one of the important control systems of an automotive. For many years, the disc brakes have been used in automobiles for the safe retarding of the vehicles. During the braking enormous amount of heat will be generated and for effective braking sufficient heat dissipation is essential. The thermal performance of disc brake depends upon the characteristics of the airflow around the brake rotor and hence the aerodynamics is an important in the region of brake components. A CFD analysis is carried out on the braking system as a case study to make out the behavior of airflow distribution around the disc brake components using ANSYS CFX software. We are interested in the determination of the heat transfer coefficient (HTC) on each surface of a ventilated disc rotor varying with time in a transient state using CFD analysis, and then imported the surface film condition data into a corresponding FEM model for disc temperature analysis.

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