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 51
- Downloads 0
THE INFLUENCE OF ROLLING MODES DURING DEFORMATION-DIFFUSION TREATMENT ON WEAR RESISTANCE OF ВТ22 TITANIUM
The influence of rolling modes during deformation-diffusion treatment on wear resistance of ВТ22 titanium was investigation. Deformation-diffusion treatment includes previous cold surface plastic deformation (CSPD) and f...
ENERGYLOADING OF THE FRICTION PAIRS OF THE BAND-BLOCK BRAKE DURING AIR-LIQUID COOLING IN THE DRAWWORK
The rate of descent of the drill string in the wellbore depends on their weight and the effectiveness of the mechanical and the hydrodynamic brake. In this case the main loading falls on the friction units of band-block...
INFLUENCE MOLYBDENUM ON THE CORROSION-MECHANICAL PROPERTIES OF CARBON STEEL WELDED JOINTS
The paper studies the impact of molybdenum on the corrosion and mechanical properties of welded joints of steel boiler. Found that the most high and stable toughness values and resistance to cracks and sulfide stress cor...
INCREASE WEAR-RESISTANCE OF MACHINE PARTS BY REPLACING CARBURIZATION WITH CARBO CROME PLATING
An experiment was conducted to add chromium powder to the composition of the reaction mixture during cementation. The temperature-time characteristics of the carbo chrome plating process correspond to the standard parame...
TRIBOBIOMINERALOGY – NEW DIRECTION IN SCIENCE OF FRICTION
These results and structure of biofilms and their impact on durability of aircraft alloys. Established that biomineralization surface layers of aircraft light alloy improves durability in 1.8-2.6 times.