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Torsional Vibration Damping Through Frictional Torsion Damper with Structural Friction and Slide Taken into Consideration
Author(s) -
Skup Zbigniew
Publication year - 2005
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200510047
Subject(s) - damper , torsion (gastropod) , vibration , mechanics , torsional vibration , amplitude , classical mechanics , physics , materials science , structural engineering , engineering , acoustics , medicine , surgery , quantum mechanics
The paper is concerned with a non‐linear discrete stationary mechanical system containing a frictional torsion damper. Proper effect of vibration damping in a two‐degree‐of freedom system can be reached by the right selection of geometrical parameters for given loads, as pre‐determined by a mathematical model. Structural friction was considered, as well as small relative sliding of damper's discs cooperating with a plunger. The system vibrates under harmonic excitation. The problem was considered on the assumption of uniform unit pressure distribution between the contacting surfaces of friction discs and the plunger. When the discs are sliding, the friction coefficient varies, depending on relative angular velocity. Friction characteristics were assumed on the basis of the author's own research and experimental testing by other authors. Properties of the material were assumed to be in accordance with classical theory of elasticity. The author analysed the influence of parameters of the dynamic system upon amplitude and frequency characteristics as well as on phase and frequency characteristics. The equation of motion was solved by means of the slowly‐varying‐parameters method and, in order to compare the results, by means of numerical simulation. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)