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Influence of the Mutual Overlapping Coefficient on the Process of a Disc Brake Squealing during Braking

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Abstract—

This article presents the results of an experimental study of the impact of the mutual overlapping coefficient on the probability of a disc brake squealing under braking at the moment before the complete stop of a rolling stock. The studies are carried out on an original test bench, which reproduced the real conditions of the interaction of the working elements of the friction unit of a disc brake according to the criteria of mass-dimensional and load-speed characteristics, as well as the operating temperature. The charts and spectrograms of noise are given that illustrate the influence of the mutual overlapping coefficient of the disc brake on the process of squealing during braking. It is shown that the greatest probability (in the range of 90 to 95%) of the brakes squealing is observed when the values of the mutual overlapping coefficient are 0.33 and 0.66. When the mutual overlapping coefficient is 0.98 the brakes do not squeal at all. Practical recommendations are given to eliminate the squealing of disc brakes before a rolling stock comes to a complete stop by increasing the mutual overlapping coefficient to values close to 1.0.

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Authors and Affiliations

  1. Berdyansk University of Management and Business, 71118, Berdyansk, Ukraine

    Yu. I. Osenin & V. K. Antoshkin

  2. Donetsk Institute of Railroad Transport, 83122, Donetsk, Ukraine

    Yu. V. Krivosheya

  3. Technological University, 141070, Korolev, Moscow oblast, Russia

    A. V. Chesnokov

Authors
  1. Yu. I. Osenin
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  2. Yu. V. Krivosheya
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  3. A. V. Chesnokov
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  4. V. K. Antoshkin
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Correspondence to Yu. I. Osenin.

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Osenin, Y.I., Krivosheya, Y.V., Chesnokov, A.V. et al. Influence of the Mutual Overlapping Coefficient on the Process of a Disc Brake Squealing during Braking. J. Frict. Wear 42, 38–43 (2021). https://doi.org/10.3103/S1068366621010062

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  • DOI: https://doi.org/10.3103/S1068366621010062

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