Effect of high-frequency low-amplitude vibration on the performance of a class of semi-active base isolation systems with on–off damping

An alternative vibration isolator that incorporates on–off friction damper with fast excitation input at the base of the damper is proposed in this paper. Friction is modelled using the Coulomb's friction model as well as the LuGre model. Analytical expressions are obtained for the effective da...

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Bibliographic Details
Published in:Journal of sound and vibration 2004-07, Vol.274 (3), p.893-914
Main Authors: Chatterjee, S., Singha, T.K., Karmakar, S.K.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Solid mechanics
Structural and continuum mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
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Summary:An alternative vibration isolator that incorporates on–off friction damper with fast excitation input at the base of the damper is proposed in this paper. Friction is modelled using the Coulomb's friction model as well as the LuGre model. Analytical expressions are obtained for the effective damper performance under fast excitation, and the performance of the isolator is studied in light of the effective damping characteristics. Numerical simulation of equation of motion validates the analytical results.
ISSN:0022-460X
1095-8568
DOI:10.1016/S0022-460X(03)00651-5