Open AccessJournal Article
Modelling and Analysis of Thermal and Stress Loads in Train Disc Brakes - Braking from 250 km/h to Standstill
TLDR
In this article, a thermal and stress analysis of disc brakes under specific loads (driving downhill and braking to a standstill) was calculated using the finite element method (FEM).Abstract:
Thermal and stress analysis of disc brakes under specific loads (driving downhill and braking to a standstill) was calculated. The FEM (Finite Element Method) was used to carry out the analysis. The analysis dealt with centrifugal load for two cases of braking, braking to a standstill on a flat surface and braking downhill, maintaining constant speed and afterwards braking to a standstill. The main boundary condition in both cases was the entered heat flux on the braking surface of the disc and the force of the brake clamps. Two different discs were used, one brand new (unused) and one with permitted wearing.read more
Citations
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The FEM-Modeling of the Frictional Heating Phenomenon in the Pad/Disc Tribosystem (A Review)
Aleksander Yevtushenko,P. Grzes +1 more
TL;DR: In this paper, a more complex description of braking action was given by the assumption of mutual relation between mating parts of the disc brake system, in which the thermoelasticity theory was applied to the model.
Journal ArticleDOI
Prediction of the cooling factors of a vehicle brake disc and its influence on the results of a thermal numerical simulation
TL;DR: In this paper, the authors used Computational Fluid Dynamics (CFLD) to determine the flow through a vehicle ventilated brake disc of known geometry, and the wall heat transfer coefficients for all vehicle speeds and brake disc temperatures were calculated.
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Three-dimensional finite element modeling and analysis of the mechanical behavior of dry contact slipping between the disc and the brake pads
Ali Belhocine,Wan Zaidi Wan Omar +1 more
TL;DR: In this article, the structural and mechanical behavior of a three-dimensional disc-pad model during the braking process under dry contacts slipping conditions is investigated, and a predictive analysis is performed in order to determine the global deformations, Von Mises stress on the disc, and contact pressures on the inner and outer pad at different time of simulation.
Journal ArticleDOI
Numerical Analysis of Thermal Stresses in Disk Brakes and Clutches (A Review)
TL;DR: In this article, both uncoupled and coupled problems of thermoelasticity for the frictional heat generation in disk brakes and clutches using the finite element method are presented and analyzed.
Journal ArticleDOI
Numerical analysis of novel SiC3D/Al alloy co-continuous composites ventilated brake disc
TL;DR: In this article, a ventilated shaft brake disc prepared by SiC 3D /Al alloy co-continuous composites was presented, which can effectively reduce the unspring weight of high-speed trains.
References
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Journal ArticleDOI
Thermal cracking in disc brakes
Thomas J. Mackin,Steven C. Noe,K.J. Ball,B.C. Bedell,D.P. Bim-Merle,M.C. Bingaman,D.M. Bomleny,G.J. Chemlir,D.B. Clayton,H.A. Evans,Roland Gau,J.L. Hart,J.S. Karney,B.P. Kiple,R.C. Kaluga,P. Kung,A.K. Law,D. Lim,R.C. Merema,B.M. Miller,T.R. Miller,T.J. Nielson,T.M. O'Shea,M.T. Olson,H.A. Padilla,B.W. Penner,C. Penny,R.P. Peterson,V.C. Polidoro,A. Raghu,B.R. Resor,B.J. Robinson,D. Schambach,B.D. Snyder,E. Tom,R.R. Tschantz,B.M. Walker,K.E. Wasielewski,T.R. Webb,S.A. Wise,R.S. Yang,R.S. Zimmerman +41 more
TL;DR: In this paper, the authors used a finite element analysis to determine the temperature profile of the disc brake rotor and calculated the strain amplitude to predict the number of high-g braking cycles to failure.
Journal ArticleDOI
An experimental investigation of hot spots in railway disc brakes
TL;DR: In this paper, a detailed investigation of the most damaging thermal gradients, called macroscopic hot spots (MHS), is given, and a scenario of hot spots occurrence is suggested step by step.
Journal ArticleDOI
Thermal fatigue cracks of fire fighting vehicles gray iron brake discs
F. Bagnoli,F. Dolce,M. Bernabei +2 more
TL;DR: In this article, a considerable number of brake discs of fire fighting vehicles used in supporting to the aeronautical activities were found cracked during NDT and further cracks examination by using optical microscope and field emission scanning electron microscope (FESEM) revealed the cracks were propagated in semi elliptical shape through the thickness of the friction surfaces.
Journal ArticleDOI
Three-dimensional transient temperature field of brake shoe during hoist’s emergency braking
TL;DR: In this paper, a theoretical model of 3D transient temperature field was established according to the theory of heat conduction, the law of energy transformation and distribution, and the operating condition of mining hoist's emergency braking.
Journal ArticleDOI
Frictional heating during braking in a three-element tribosystem
Aleksander Yevtushenko,М. Kuciej +1 more
TL;DR: In this article, a three-element model of braking process is proposed and the analytical solution of a boundary-value problem of heat conduction for tribosystem, consisting of the semi-space, sliding with the time-dependent velocity (braking at uniform retardation) on a surface of the strip deposited on a semi-infinite foundation, is obtained.