Noise and temperature reduction in the contact of tribological elements during braking

Abstract

Abstract. This paper describes the problem of rising temperature of the friction elements during braking. Negative influence of brake pads heating on the vehicle efficiency and traffic safety is well known. Methods of temperature stabilization in the contact of tribological elements during braking are proposed. Variants of brake pad application with additional elements consisting of phase transition material are considered. Their effectiveness is estimated. The effect of the contact characteristics on noise generation is analysed. The method of noise reduction is considered. The target function for the tribological processes management in the contact of the brake elements has been developed. The application of this target function allows using the braking reserve with the achievement of maximum braking effect with minimal wear and noise.

Applied Research of Applicability of High-Strength Steel for a Track of a Demining Machine in Term of Its Tribological Properties

“…Components are exposed to the impacts of the environment and the design material also has to be chosen according to this criterion; this reduces the impacts of the wear on the component. The tribological process also develops during mutual movements of bodies and is characteristic of the material interactions of friction units, a substance between them and the environment [35]. The processes run in real time and space.…”

Design of a Metro Door System and Determination of Main Loads

“…Consequently, numerous requirements must be met, namely those related to fire protection, acoustic and thermal insulation [3,5], electronic devices, reliability, availability, maintainability, safety, protection against current and various environmental conditions and loads caused by vibrations, which rise when riding on a track at various speeds [12,33]. Great emphasis is put on noise protection, as this well-known negative phenomenon is a consequence of every braking process [6,7,24,28].…”

“…where S = 1.622137 m 2 is the inner area of the door, -FCES -forces emerging from passengers ±1000 N per 1 meter of the exposed door width, acting on the points A and B (Figs. 1 and 9) on the door leaves' centres of gravity (5):…”

Structural Analysis of a Modified Freight Wagon Bogie Frame

“…Geometric characteristics define the rail/wheel profiles contact couple geometrical relationship. The shape of the contact couple crucial influences the size of the contact patch and contact stress between wheel and rail value [23]. This creates loading and excitation forces acting inside vehicle and track systems [24].…”