PL EN
 
ABSTRACT
The noise generated by motor vehicles is one of the negative factors affecting the deterioration of the environment (especially acoustic), where people are present. Vibroacoustic phenomena, especially those emitted by braking systems, are regarded as highly undesirable. The problem of vibration in the brakes, in both rail and road vehicles, was already noticed in the 30s of the twentieth century [10]. At the beginning the researchers pointed out that the noise and vibration generated by the brake was due to the friction characteristics of the tribological pair, making the appearance of the effect was the result of the value of the friction coefficient changing along with the rotational speed. It was also claimed that the coefficient of static friction is greater than kinetic friction. The consequence of vibration in the brake in conjunction with the propagation of sound is the unstable work of the brake system manifested by a variable value of the instantaneous friction coefficient. Described problems are the result of research conducted in the framework of a project funded by the National Centre for Research and Development (LIDER V program, No. LIDER/022/359/L- 5/13/NCBR/2014).
 
REFERENCES (12)
1.
Kaluba M., Zużycie okładzin ciernych hamulca tarczowego pojazdów szynowych, Pojazdy Szynowe 1999 nr 4, s. 24-29.
 
2.
Kądziołka T., Kowalski S, Smolarski D., Analiza porównawcza wrażliwości dźwigniowych hamulców kolejowych, Pojazdy szynowe nr 1/2011.
 
3.
Kinkaid N.M., O’Reilly O. M, Papadopoulos P., Automotive disc brake squeal. Journal of sound and vibration 267 (2003) 105-166. Department of Mechanical Engineering, University of California, Berkeley, USA.
 
4.
Nowicki J., Obliczenia symulacyjne skuteczności hamowania pociągu, XIV Konferencja Naukowa POJAZDY SZYNOWE 2000, Kraków, Arkanów, 9-13 październik 2000, t. 2, s. 139-146.
 
5.
North M.R, Disc brake squeal—a theoretical model, Technical Report 1972/5, Motor Industry Research Association, Warwickshire, England, 1972.
 
6.
Rudolph M., Popp K., Brake squeal, in: K. Popp (Ed.), Detection, Utilization and Avoidance of Nonlinear Dynamical Effects in Engineering Applications: Final Report of a Joint Research Project Sponsored by the German Federal Ministry of Education and Research, Shaker, Aachen, 2001, pp. 197–225.
 
7.
Rudolph M., Popp K., Friction induced brake vibrations, in: CD-ROM Proceedings of DETC’01, DETC2001/VIB-21509, ASME, Pittsburgh, PA, 2001, pp. 1–10.
 
8.
Sawczuk W., Szymański G. Zastosowanie testów impulsowych do oszacowania częstotliwości rezonansowych wybranych elementów kolejowego układu hamulcowego, Logistyka 6/2014.
 
10.
Ścieszka S.F., Hamulce cierne. Zagadnienia materiałowe, konstrukcyjne i tribologiczne, Wydawnictwo Gliwice-Radom 1998, s.15.
 
11.
Thompson J. K.,: Brake NVH. Testing and Measurements. SAE International.
 
12.
Triches Junior M., Samir N. Y. Gerges, Jordan R., Analysis of brake squeal noise using finite element method: A parametric study, Federal University of Santa.
 
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