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RESEARCH PAPERS

Dynamic Vibration Absorbers That Have Increased Effectiveness

[+] Author and Article Information
J. C. Snowdon

Applied Research Laboratory, The Pennsylvania State University, University Park, Pa.

J. Eng. Ind 96(3), 940-945 (Aug 01, 1974) (6 pages) doi:10.1115/1.3438465 History: Received January 21, 1974; Online July 15, 2010

Abstract

The effectiveness of a three-element dynamic absorber and of dual dynamic absorbers in reducing the transmissibility across a simple spring-mass system at resonance has been investigated and shown to be considerably greater than that of the conventional dynamic absorber. From the complete information provided, much in graphical form, it is possible to design and to estimate the performance of both the three-element and the dual dynamic absorbers for a wide range of absorber masses. Utilizing design parameters that have been determined and specified here for the first time, it is shown 1) that the three-element absorber can be more effective than a conventional absorber of twice its mass, and 2) that by use of dual absorbers, it is possible to obtain a significant trough in transmissibility while avoiding the two resonant peaks of large magnitude that are normally introduced at neighboring frequencies. The three-element absorber requires no increase, and the dual absorbers require only a modest increase in mass beyond that of the conventional dynamic absorber.

Copyright © 1974 by ASME
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