A New Model Describing the Formation of Heat Cracks in Brake Discs for Commercial Vehicles

Istoc, Sami Bilgic; Winner, Hermann

doi:10.4271/2018-01-1882

Cited by 3 publications

(2 citation statements)

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“…As people want the vehicles to be faster, it's required that the brakes should be able to absorb and dissipate heat in a shorter time, and better resist to the water fade phenomenon [8][9][10][11]. Due to the many merits listed above, disc brakes have been used more widely in vehicles that require high braking performance, especially large motor buses and trucks [12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Hg2 represents the braking force generated by rear wheel brakes of the vehicle, HGR2 represents the braking force generated by the contact between rear-axle wheels and the ground, then there is Hg2=HGR2=ψC2. The expression for the braking method of locking the front and rear wheels at the same time is: (11) Assuming: K1 and K2 represent the distance from the center of mass of the vehicle to the front and rear axles, then there is: (12) Formula 13 gives the ratio α of the braking force of the front axle of vehicle to the total braking force:…”

Section: Introductionmentioning

confidence: 99%

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An Analysis of the Coupling Between Temperature and Thermal Stress of Disc Brakes Based on Finite Element

Wen¹

2021

IJHT

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Disc brakes have been more widely used in recent years due to its many merits such as fast heat absorption and dissipation, and resistance to water fade. Since it’s difficult to describe the failure of brakes under complex working conditions in only a few times of thermal-structural coupling simulations, this paper analyzed the coupling between temperature and thermal stress of disc brakes under multiple continuous braking conditions. At first, a 3D model of bus disc brake was built in ABAQUS, and its braking motion and dynamic parameters, heat flux density, convective heat dissipation coefficient, heat flux distribution coefficient, and other thermodynamic parameters were calculated. Then, the numerical simulation of the temperature field of disc brake and the coupling analysis of thermal stress under different braking conditions were completed. At last, experimental results gave the analysis results of the temperature distribution characteristics of brake disc surface, and the comparison and demonstration of the finite element analysis were conducted.

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