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Axial stiffness of rubber bush mountings in the audible frequency range
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, MWL Structural and vibroacoustics.ORCID iD: 0000-0001-5760-3919
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, MWL Structural and vibroacoustics.
2005 (English)In: 12th International Congress on Sound and Vibration 2005: ICSV 2005, 2005, 5552-5559 p.Conference paper, Published paper (Other academic)
Abstract [en]

A dynamic axial stiffness model of a rubber bush mounting of arbitrary length is presented where influences of frequency, bush length, diameter and material properties are investigated. To overcome the problem of simultaneously satisfying the boundary conditions at the radial and end surfaces, a waveguide technique is applied, using the axially symmetric dispersion relation for an infinite plate and approximately satisfying the radial surfaces by a sub-region method. The rubber is assumed to be nearly incompressible, being elastic in dilatation while applying a fractional standard linear solid in deviation. The latter model is minimizing the necessary number of parameters to accurately fit rubber properties over a wide frequency range. The presented model results agree with those of approximated long bush models for sufficiently long bushings while diverging from the same for shorter examples. To a great extent, the increased influences of higher order modes and dispersion explain the discrepancies reported for approximated theories.

Place, publisher, year, edition, pages
2005. 5552-5559 p.
Series
International Congress on Sound and Vibration, ICSV, Vol. 6
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-82571Scopus ID: 2-s2.0-84881582710ISBN: 978-162748149-6 (print)OAI: oai:DiVA.org:kth-82571DiVA: diva2:498365
Conference
12th International Congress on Sound and Vibration 2005, ICSV 2005; Lisbon, Portugal, 11-14 July, 2005
Note

QC 20140821

Available from: 2012-02-12 Created: 2012-02-12 Last updated: 2014-08-21Bibliographically approved

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Kari, Leif

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