Investigation of the Thermal Vehicle Brake Behavior During the Vehicle's Development Phase by Co-Simulation

Tonchev, Anton Angelov; Hirschberg, Wolfgang; Jagsch, Sebastian

doi:10.4271/2007-01-3935

Cited by 6 publications

(5 citation statements)

References 3 publications

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“…Zasadniczy wpływ na przebieg zjawisk tribologicznych występujących na styku par ciernych ma temperatura. Przy jej istotnym wzroście zmienia się (zwykle maleje) współczynnik tarcia, wskutek czego zmniejsza się skuteczność hamowania [1,7,13,15,17]. Redukcji ulega również odporność współpracujących elementów na zużycie ścierne.…”

Section: Zjawiska Cieplne W Hamulcachunclassified

“…Redukcji ulega również odporność współpracujących elementów na zużycie ścierne. Przy dużych obciążeniach termicznych także może wystąpić degradacja strukturalna i chemiczna materiału ciernego [1,13,15]. Zjawisku rozszerzalności cieplnej towarzyszą deformacje i naprężenia termiczne, powodujące doraźne zaburzenia współpracy elementów ciernych.…”

Section: Zjawiska Cieplne W Hamulcachunclassified

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Numeryczna i eksperymentalna analiza procesu wymiany ciepła w kolejowym hamulcu tarczowym

Wolff¹,

Kukulski²

2019

Problemy Kolejnictwa - Railway Reports

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Section: Zjawiska Cieplne W Hamulcachunclassified

Numeryczna i eksperymentalna analiza procesu wymiany ciepła w kolejowym hamulcu tarczowym

Wolff¹,

Kukulski²

2019

Problemy Kolejnictwa - Railway Reports

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“…With its substantial growth, the friction coeffi cient changes and usually its value drops. In eff ect, the braking effectiveness declines [1,7,13,15,17]. In addition, the resistance of cooperating elements to abrasive wear lowers.…”

Section: Th Ermal Phenomena In Brakesmentioning

confidence: 99%

“…In addition, the resistance of cooperating elements to abrasive wear lowers. Subject to considerable thermal loads, the result may also be the structural and chemical degradation of the frictional material [1,13,15]. In turn, thermal expansion is accompanied by deformation and heat stresses leading to short-term disruption of the cooperation between friction elements.…”

Section: Th Ermal Phenomena In Brakesmentioning

confidence: 99%

Numerical and Experimental Analysis of the Heat Transfer Process in a Railway Disc Brake

Wolff¹,

Kukulski²

2019

Problemy Kolejnictwa - Railway Reports

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Whether railway brakes are eff ective or not substantially depends on the thermal condition of the disc brake and friction linings. An eff ective research method of the heat transfer in brakes is computer simulation as well as experimental testing on a full-size dynamometric test bench. A 2-dimensional, axisymmetric numerical model of transient heat conduction in the railway brake is presented. Relevant boundary conditions concerning heat generated in the brake and dissipated to the environment are used. Th e problem is solved with the use of the fi nite element method. Th e experimental test and simulation results related to intensive braking of the train from 320 km/h to a halt are preliminary compared. Th e approximate values of maximum temperatures at the end of braking are obtained-ca. 500°C with a certain divergence of temperature profi les during the process under consideration. It is advisable to further develop research concerning this problem.

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“…Many researchers have investigated the thermal performance of lightweight disc brake rotors using different methods [1,3,4,5,10,11,12] but few of them have investigated their performance based on a formal optimisation analysis approach [6]. Taguchi defined the Design of Experiments (DOE) as a process for evaluating all possible combinations of parameters to reach the desired objective, both efficiently and reliably.…”

Section: Optimisation Of Alumina Coated Lightweight Brake Rotormentioning

confidence: 99%

Optimisation of Alumina Coated Lightweight Brake Rotor

Alnaqi

Shrestha

Barton

et al. 2014

SAE Technical Paper Series

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Aluminium alloys have been used extensively in the automotive industry to reduce the weight of a vehicle and improve fuel consumption which in turn leads to a reduction in engine emissions. The main aim of the current study is to replace the conventional cast iron rotor material with a lightweight alternative such as coated aluminium alloy. The main challenge has been to meet both the cost and functional demands of modern mass-produced automotive braking systems. A sensitivity analysis based on the Taguchi approach was carried out to investigate the effect of various parameters on the thermal performance of a typical candidate disc brake. Wrought aluminium disc brake rotors coated with alumina on the rubbing surfaces were determined to have the best potential for replacing the conventional cast iron rotor at reasonable cost.Optimisation of the structure was subsequently carried out using a genetic algorithm on the selected coated aluminium disc brake rotor. This determines the optimum thickness of the coating and the composition of the substrate based on selected criteria. Prototype aluminium disc brake rotors were coated with alumina using the Plasma Electrolytic Oxidation (PEO) technique and the thermal performance of these lightweight rotors was investigated experimentally using a brake dynamometer. A high speed thermal imaging system was used to evaluate and measure the rubbing surface temperature of the coated brake rotors. The experimental results showed generally good agreement with the numerical predictions. The coated wrought aluminium disc brake rotor was demonstrated to give good thermal and friction performance up to relatively high rubbing surface temperatures of the order of 500°C.

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Investigation of the Thermal Vehicle Brake Behavior During the Vehicle's Development Phase by Co-Simulation

Cited by 6 publications

References 3 publications

Numeryczna i eksperymentalna analiza procesu wymiany ciepła w kolejowym hamulcu tarczowym

Numeryczna i eksperymentalna analiza procesu wymiany ciepła w kolejowym hamulcu tarczowym

Numerical and Experimental Analysis of the Heat Transfer Process in a Railway Disc Brake

Optimisation of Alumina Coated Lightweight Brake Rotor

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