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 72
- Downloads 0
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.
ANALYSIS OF THE EFFECTS OF MECHANICAL STRESSES ON THE POSSIBILITY OF MIGRATION OF FUEL STRUCTURES OF ELECTRONIC EQUIPMENT ON THE EXAMPLE OF ZIF CONNECTOR
The article proposes a fundamentally new ZIF connector design for flexible FFC and FPC switching loops connection (mechanical and electric contact) in devices of electronic engineering. And also studies mechanical loads...
QUALITY ENSURING PROCESS OF PREPARATION FOR PROCESSING OF AIRCRAFT WITH ANTI-ICING LIQUID
This article shows how defined and grouped different types of ground icing aircraft. The inter-relation of different factors ice formation on the surfaces of the aircraft was identified. It was found that icing of aircra...
THE REDUCING OF ENERGYLOADING OF FRICTION UNITS OF BAND-BLOCK BRAKES OF DRAW-WORKS
To increase the heat transfer coefficient from metallic and non-metallic elements of the friction of band-block brakes we can use a developed heat exchange surface. However, the natural cooling of the friction pairs of b...
A DIAGNOSTICS PROBLEM OF A-POSTERIOR PROBABILITY DETERMINATION VIA BAYES’ FORMULA OBTAINED IN THE MULTI-OPTIONAL HYBRID FUNCTIONS ENTROPY CONDITIONAL OPTIMIZATION WAY
The paper theoretically considers the possibility of the multi-optional hybrid func-tions entropy conditional optimization principle applicability with the purpose of discovering one more substantiated reason for the Mr....