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

Abstract

Heavy-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.
Author Jerzy Jaroszewicz (FEM / DPM)
Jerzy Jaroszewicz,,
- Department of Production Management
, Krzysztof Łukaszewicz (FEM / DPM)
Krzysztof Łukaszewicz,,
- Department of Production Management
, Vladimir Antonyuk
Vladimir Antonyuk,,
-
Journal seriesActa Mechanica et Automatica, ISSN 1898-4088, e-ISSN 2300-5319, (N/A 40 pkt)
Issue year2019
Vol13
No1
Pages37-44
Publication size in sheets0.5
Keywords in EnglishHeavy Vehicles, Friction Discs, Multi-Disc Brake, Vibratory Stabilisation
ASJC Classification2207 Control and Systems Engineering; 2210 Mechanical Engineering
DOIDOI:10.2478/ama-2019-0006
URL http://www.actawm.pb.edu.pl/volume/vol13no1/06_2018_014_JAROSZEWICZ_LUKASZEWICZ_ANTONYUK.pdf
Internal identifier000045324
Languageen angielski
LicenseJournal (articles only); published final; Other open licence; with publication
Score (nominal)40
Score sourcejournalList
ScoreBUT score = 14.0, 12-06-2019, manual
Ministerial score = 40.0, 03-03-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 0.615
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