Levchenko O. Reduction of noise emission in the process of automobile tire operation

The research object is a process tire noise of car-tire at co-operating of it with travelling coverage. The article of reduction of noise emission in the process of automobile tire operation. The article of reduction of noise emission in the process of automobile tire operation. The thesis is devoted to the problem of automobile tire noise emission reduction due to optimization of operational factors and constructive parameters in the process of its exploitation. Structurization of reasons and sources of automobile tire noise emission origin has been carried out in the given work. Mathematical dependences that describe the process of noise emission by the main source of the automobile tire. That is the tire skeleton vibration, creeping of tread ball elements relative to the road surface and dir extraction from tread ball grooves have been presented. The mathematical model enables to assess the level of noise emission of the existing tires and prognosticate it in the process of their operation and on the stage of designing perspective tires. The mathematical model, except the main operational factors (speed, loading, internal gas pressure) and constructive parameters (geometrical characteristics of the tire skeleton and the tread ball, physical-mechanical properties of noise emission level by the tire from the density of gas bulking agent. The results of experimental researches on automobile tire noise emission measuring at its friction against the asphalt concrete covering in the speed range from 20 to 100 km/h have been presented. Experimental researches were carried out both in road and laboratory conditions. The experimental results obtained revealed their adequacy at comparative analysis with the results detained by the experimental method. The developed method revealed its function ability and is applied at designing. The results obtained are also a part of experimental researches complex that became the basis for introduction by Odessa factory.