NDLI: Vibration Isolation via Linear and Nonlinear Periodic Devices

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Spadoni, A. Daraio, C.
Copyright Year	2009
Abstract	The current manuscripts deals with the design of passive mechanical filters for vibration attenuation a low frequencies. Traditionally, this has been addressed employing dissipation as the attenuation mechanism. While such strategy provides broad-frequency effectiveness, attenuation at any given frequency is modest. Mass and stiffness-modulated periodic systems, on the other hand, exploit dispersion as the attenuation mechanism and represent an alternative to dissipation-based devices. Attenuation due to dispersion may be significantly higher than what is afforded by dissipation-based systems within a design frequency rage. The proposed assemblies, however, are not easily tailored to filter lowe-frequency vibrations. To this end, embedding such periodic systems into an elastic matrix yields a high-pass mechanical filter with tunable stop bands were waves are not allowed to propagate. Significant improvements in performance moreover may be obtained if intrinsically nonlinear devices are adopted. Specifically, a strongly nonlinear medium such as ordered granular media supports a limited number of waveforms, resulting in an efficient mechanical filter. Results reported here, in fact, suggest matrix-embedded sphere chains as highly tunable mechanical filters for vibration attenuation.
Sponsorship	Design Engineering Division and Computers in Engineering Division
Starting Page	277
Ending Page	284
Page Count	8
File Format	PDF
ISBN	9780791848982
DOI	10.1115/DETC2009-87620
e-ISBN	9780791838563
Volume Number	Volume 1: 22nd Biennial Conference on Mechanical Vibration and Noise, Parts A and B
Conference Proceedings	ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Language	English
Publisher Date	2009-08-30
Publisher Place	San Diego, California, USA
Access Restriction	Subscribed
Subject Keyword	Design Chain Filters Vibration Energy dissipation Stiffness Vibration isolation Waves
Content Type	Text
Resource Type	Article

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