Design of the Vibrostabilisation Stand for Reducing Residual Stresses in Discs Used in the Construction of Multi-Plate Clutches and Brakes
Jerzy Jaroszewicz , Krzysztof Łukaszewicz , Vladimir Antonyuk
AbstractHeavy-duty, oil-cooled brake discs (MMOTs) are often used in heavy-duty brake systems manufactured by companies such as Caterpilar, Clark, Komatsu and Liebherr. These discs are usually made of special steels, and in most cases, the flatness of the working surfaces should not exceed 0.15–0.30 mm. Although the technological processes of friction disc production include several stages of heat treatment and grinding, the required accuracy is not achieved in some cases. In addition, the remaining residual stresses lead to the de-formation of the discs during their lifetime. In production practice, three methods are used to reduce residual stresses: thermo-fixing, dy-namic stabilisation and vibratory stabilisation consisting in bringing discs to transverse resonance vibrations and maintaining resonance until significant stress reduction. The article proposes a method of stabilising the discs using the resonance phenomenon at the first few frequencies. In this article, Cauchy’s function method and characteristic series method are used to develop solution value problem for clamped circular plates with discrete inclusions as concentrated masses and springs. Calculation methods for quick estimation of the own frequency of discs with additional ring mass enabling the use of low power vibration inductors are presented. The use of a special mem-brane and a pneumatic cushion in the construction of the stand allows to induce vibrations of higher frequencies.
|Journal series||Acta Mechanica et Automatica, ISSN 1898-4088, e-ISSN 2300-5319, (N/A 40 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||Heavy Vehicles, Friction Discs, Multi-Disc Brake, Vibratory Stabilisation|
|License||Journal (articles only); published final; ; with publication|
|Score|| = 14.0, 12-06-2019, manual|
= 40.0, 03-03-2020, ArticleFromJournal
|Publication indicators||: 2018 = 0.615|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.