Non-linear behavior of a rubber isolator system using fractional derivatives
2002 (English)In: Vehicle System Dynamics, ISSN 0042-3114, Vol. 37, no 3, 217-236 p.Article in journal (Refereed) Published
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.
viscoelastic materials, mechanical-behavior, track interaction, hdr bearings, model, calculus, elastomer
IdentifiersURN: urn:nbn:se:kth:diva-21486DOI: 10.1076/vesd.18.104.22.16832ISI: 000175160100004OAI: oai:DiVA.org:kth-21486DiVA: diva2:340184
QC 20100525 NR 201408042010-08-102010-08-102012-02-11Bibliographically approved