NAU Harvester System
ENERGY LOADING DISC BRAKE VEHICLES
Наукові журнали Національного Авіаційного Університету
View Archive Info| Field | Value | |
| Title |
ENERGY LOADING DISC BRAKE VEHICLES
ЭНЕРГОНАГРУЖЕННОСТЬ ДИСКОВО-КОЛОДОЧНЫХ ТОРМОЗОВ ТРАНСПОРТНЫХ СРЕДСТВ ЕНЕРГОНАВАНТАЖЕНІСТЬ ДИСКОВО-КОЛОДКОВИХ ГАЛЬМ ТРАНСПОРТНИХ ЗАСОБІВ |
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| Creator |
Киндрачук, Мирослав Васильевич
Вольченко, Дмитрий Александрович Скрыпнык, Василий Степанович Малык, Леся Богданівна Бекиш, Ирина Орестивна |
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| Subject |
disk-brake brake; friction pair; microprotrusions; thermal impulse; electric charge; thermal resistance
— дисково-колодочный тормоз; пара трения; микровыступы; тепловой импульс; электрический заряд; термические сопротивления — дисково-колодкове гальмо; пара тертя; мікровиступи; тепловий імпульс; електричний заряд; термічний опір УДК 621.891 |
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| Description |
The materials of the article paid attention to the energy load of disc-block brakes of vehicles and established the influence on its characteristics of the nature of the destruction of an electric charge by a thermal impulse at the contacts of microprotrusions of friction pairs, as well as the thermal resistances of the brake disc. One of the methods for intensifying the transfer of heat through the walls of a self-ventilating brake disc separating air environments with temperatures (air washes the outer side walls of the half-discs) is to enlarge one of the wall surfaces by ribbing. In this case, the left half-disk is made with a flange, and the right one - with fins, which form the ventilation ducts in the form of trapezoid holders (in section). The work on the formation of nanoscale structures begins with the realization of mass transfer effects between friction pairs ’polymer-metal and metal-polymer depending on the energy levels of the contact spots of their microprotrusions. The energy levels of microprotrusions of contact spots, the areas of which increase towards the completion of the process of electrothermal friction, increase. Due to the fact that the thermal impulse causes a volume expansion of the polymer surface layer, which turns out to be non-uniform, since the disturbance originates on the charged surface of the polymer film, where the thermal impulse occurs, and gradually spreads throughout the film. Instead of a thermal impulse, a normal effort impulse is used to create a local expansion of the film, which can be converted into a specific load impulse. The latter method can be used both in charge and in current measurements, it does not require an inconvenient handling procedure for finding the charge distribution, since during the propagation of a jump in specific loads through a metal microprotrusion (contact patch), local compression is the same at all points. The thermal resistance of the thickness of a solid disk and half disks of a self-ventilating disk (one half-disk with a flange, and the second half-disk with ventilation channels formed by the ribs) plays an essential role in the processes of conductive heat transfer. From the graphical dependences, it follows that with increasing disk thickness, it is necessary to vary the thermal conductivity of the materials used to manufacture brake discs. It turns out that the calculation and design of various types of disks of subcategories of vehicles is carried out not only to determine design and weight parameters, but also taking into account the energy intensity of friction belts of brake disks. Thus, this material considers the interaction of electric and thermal fields on contact spots of microprotrusions of metal-polymer pairs friction acting transversely and longitudinally in their fields. Moreover, a relationship has been established between the thermal resistance of the thickness of the disk and its heat transfer coefficient.
В материалах статьи уделено внимание энергонагруженности дисково-колодочных тормозов транспортных средств и установлено влияние на ее характеристики природы разрушения электрического заряда тепловым импульсом на контактах микровыступов пар трения, а также термических сопротивлений тормозного диска. У матеріалах статті приділено увагу енергонавантаженості дисково-колодкових гальм транспортних засобів і встановлено вплив на її характеристики природи руйнування електричного заряда тепловим імпульсом на контактах мікровиступів пар тертя, а також термічних опорів гальмівного диска. |
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| Publisher |
National Aviation University
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| Contributor |
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| Date |
2018-12-31
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| Type |
—
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| Format |
application/pdf
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| Identifier |
http://jrnl.nau.edu.ua/index.php/PTZ/article/view/13322
10.18372/0370-2197.4(81).13322 |
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| Source |
Проблеми тертя та зношування; № 4(81) (2018); 13-20
Problems of Friction and Wear; № 4(81) (2018); 13-20 Проблемы трения и изнашивания; № 4(81) (2018); 13-20 |
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| Language |
ru
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