EXPERIMENTAL RESEARCHES OF ENERGYLOADING OF FRICTION PAIRS OF DISC BRAKES OF VEHICLES (part three)
Journal Title: Проблеми тертя та зношування - Year 2018, Vol 79, Issue
Abstract
The friction process in metal-polymer friction pairs of disk brakes is related to high-energy phenomena. For its implementation, it is necessary to supply a lot of energy from outside. The tribosystem is considered to be electro- and thermal-dynamically stable when it has a mini-mum reserve of internal energy. Thus, in order to ensure electro-dynamic and, as a conse-quence, thermal-dynamic conditions for the operation of the tribounit, it must dissipate the supplied thermal energy so that the materials of the friction pads do not reach the allowable surface temperature. This thermodynamic state is the criterion for stabilizing the process of friction and wear. At the same time energy dissipation proceeds through mechanical, physical and chemical processes that occur in the surface and near-surface layers of metal-polymer friction pairs of the disk brake. However, this is not enough and therefore the friction pairs of the disk brake must be cooled by counter flows of air when the vehicle is moving. In the materials of the article, the energyloading of the serial brake discs and with the cooling elements of self-ventilated brake discs used in the subcategories of trucks is estimated. The efficiency of forced air cooling of brake friction pairs of vehicles is established. In this publication, the following questions are considered: features of carrying out of experi-mental researches of disk brakes of vehicles; means for carrying out experimental researches of disk brakes; results of the assessment of the energyloading of friction pairs of disk brakes of vehicles.
Authors and Affiliations
A. I. VOLCHENKO, M. V. KINDRACHUK, A. V. VOZNYI, I. O. BEKISH, V. S. VYTVYTSKYI
Keywords
Related Articles
- EP ID EP366583
- DOI -
- Views 31
- Downloads 0
NONCIRCULAR-SCREW GEARS
Mathematical model of synthesis of circular-screw gears with asymmetric function of transmission ratio based on the offered main and additional conditions of synthesis is stated in the article. The advantage of applicati...
INVESTIGATION OF THE INFLUENCE OF OPERATING MODES ON THE TRIBOTECHNICAL CHARACTERISTICS OF PHENYLO-NE
The effect of operating modes on the tribotechnical characteristics of phenylone of grade C-2 by the method of mathematical experiment planning has been studied. The factors that have the greatest influence on the optimi...
WEAR OF STEEL CHROMOSALUMINIZED 12Х18N10T IN FRICTION SLIDING UNLUBRICATED
The structure, phase and chemical composition, microhardness of the surface bands are 12Х18N10T after chromoaluminizing chromoaluminizing. It is shown that the wear resistance stali 12Х18N10T in sliding friction without...
FLOW OF A SEMI-BOUNDED STREAM WITH FRICTION AND HEAT EXCHANGE IN THE NOZZLE CHANNEL OF A LIQUID ROCKET ENGINE
The ways of problem solving of determining frictional losses during cooling of a jet nozzle of a liquid rocket engine by gas-generating gas, taking into account the compressibility, non-isothermicity and gradient of the...
INVENTORY OF CONTAMINATION SUBSTANCES EMISSIONS FROM FUEL TANKS IN FUELS AND LUBRICNTS STORAGES
This article shows how contamination emissions in storages calculated. The imperfection of different methods of emissions inventory was identified. It was found that regulations are supplemented by new criterias. In this...