Определение влияния геометрии вентиляционного аппарата на инерцию тормозного диска

A E Litvinov; I A Yaitskov; P A Polyakov; E S Fedotov; A A Golikov

doi:10.22213/2413-1172-2021-3-4-16

Authors

A. E. Litvinov Kuban State Technical University
I. A. Yaitskov Rostov State Transport University
P. A. Polyakov Kuban State Technical University
E. S. Fedotov Kuban State Technical University
A. A. Golikov Kuban State Technical University

DOI:

https://doi.org/10.22213/2413-1172-2021-3-4-16

Keywords:

ventilation device, moment of inertia, brake disc, power to overcome inertial forces, flywheel masses

Abstract

The variety of brake discs is determined by the presence of different geometries of the ventilation device. Modern brake discs are subdivided according to the geometry of the ventilation device by the presence of fins, which form channels and studs for heat transfer to the cooling air. In turn, ventilation channels can be radial and curved. Studs are subdivided by geometry into cylindrical, prismatic and complex configuration. The paper proposes the calculation of the power required to overcome the inertial forces of the brake disc for various variants of the ventilation device. The power expended to overcome the inertial forces of a brake disc with radial channels is 44 % less than that of a brake disc with curved channels. Brake discs with a ventilation device with prismatic studs have 1.22 times less power required to overcome inertial forces than with cylindrical studs and 1.31 times with DBA studs. When comparing the results of the method for determining the moments of inertia of brake discs with various ventilation devices and CFD models of similar brake discs created in the ANSYS Workbench Mechanical program, the discrepancy was 5.52 %. The study shows the dependence of the power of overcoming inertia forces on the number of ribs. With an increase in the number of ribs by 60, the power to overcome the inertial forces of the radial channels of the disk increased by 1.16 times, while the power of the curved channels of the disk increased by 1.07 times. With an increase in the number of studs by 50 pieces for a disc with cylindrical studs of the apparatus, the power expended to overcome inertial forces increases by 1.15 times, while for prismatic studs there is an increase of 1.05 times. With an increase in the number of studs by 50 pieces, the power to overcome the inertial forces of the ventilated brake disc from DBA increases by 1.17 times. When designing ventilation brake discs, in addition to the heat dissipation parameters, it is necessary to take into account the parameters of the power to overcome the inertial forces of the brake discs, which affect the operational parameters of the braking system as a whole.

Author Biographies

A. E. Litvinov, Kuban State Technical University

DSc in Engineering, Associate Professor

I. A. Yaitskov, Rostov State Transport University

DSc in Engineering, Associate Professor

P. A. Polyakov, Kuban State Technical University

PhD in Engineering

E. S. Fedotov, Kuban State Technical University

A. A. Golikov, Kuban State Technical University

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