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Non-linear behavior of a rubber isolator system using fractional derivatives
KTH, Superseded Departments, Vehicle Engineering.
KTH, Superseded Departments, Vehicle Engineering.ORCID iD: 0000-0001-5760-3919
2002 (English)In: Vehicle System Dynamics, ISSN 0042-3114, Vol. 37, no 3, 217-236 p.Article in journal (Refereed) Published
Abstract [en]

A non-linear rubber isolator included in a dynamic system is examined where influences of dynamic amplitude and frequency are investigated through measurements and modeling. The frequency dependence of the isolator is modeled by a fractional calculus element while a frictional component accounts for its amplitude dependence. The model works in the time-domain and simulations of harmonic and non-harmonic motion are compared to measurements. Good agreement is obtained in a wide frequency and amplitude range for a freely oscillating one degree of freedom system, with the isolator acting as a coupling between exciting foundation and mass, and for a single isolator showing the typical amplitude dependence known as the Payne effect. The model is found to be superior to the commonly applied Kelvin-Voigt element in modeling the dynamic isolator properties.

Place, publisher, year, edition, pages
2002. Vol. 37, no 3, 217-236 p.
Keyword [en]
viscoelastic materials, mechanical-behavior, track interaction, hdr bearings, model, calculus, elastomer
National Category
Applied Mechanics
URN: urn:nbn:se:kth:diva-21486DOI: 10.1076/vesd. 000175160100004OAI: diva2:340184
QC 20100525 NR 20140804Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2012-02-11Bibliographically approved

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