A closed-form optimal tuning of mass dampers for one degree-of-freedom systems under rotating unbalance forcing

Argentini, T., Belloli, M., & Borghesani, P. (2015) A closed-form optimal tuning of mass dampers for one degree-of-freedom systems under rotating unbalance forcing. Journal of Vibration and Acoustics, 137(3), Article Number:-034501.

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This paper is focused on the study of a vibrating system forced by a rotating unbalance and coupled to a tuned mass damper (TMD). The analysis of the dynamic response of the entire system is used to define the parameters of such device in order to achieve optimal damping properties. The inertial forcing due to the rotating unbalance depends quadratically on the forcing frequency and it leads to optimal tuning parameters that differ from classical values obtained for pure harmonic forcing. Analytical results demonstrate that frequency and damping ratios, as a function of the mass parameter, should be higher than classical optimal parameters. The analytical study is carried out for the undamped primary system, and numerically investigated for the damped primary system. We show that, for practical applications, proper TMD tuning allows to achieve a reduction in the steady-state response of about 20% with respect to the response achieved with a classically tuned damper. Copyright © 2015 by ASME.

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ID Code: 93795
Item Type: Journal Article
Refereed: Yes
DOI: 10.1115/1.4029576
ISSN: 0739-3717
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Dynamics Vibration and Vibration Control (091304)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 by ASME
Deposited On: 16 Mar 2016 23:02
Last Modified: 17 Mar 2016 21:31

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