TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Resonating plated vibration absorber: effect of location and installation method upon its efficiency



Full text article ( in russian)

Year

 
2017

Issue

 
380

Volume

 
2

Pages

 
131-136

Caption

 
Resonating plated vibration absorber: effect of location and installation method upon its efficiency

Authors

 
Kirpichnikov V.Yu., Kosheev A.P., Savenko V.V., Smolnikov V.Yu.

Keywords

 
vibration, resonance, plates, damping.

Summary

 
Object and purpose of research.Experimental study on the efficiency of resonating plated vibration absorber tuned in one of the natural bending frequencies of the damped plate (model of the structural element). The paper discusses different variants of the absorber installation in the node and antinode areas for corresponding resonant vibration shape of the plate.
Subject matter and methodsExperimental efficiency determination of resonant plated vibration absorber based on the difference of vibration excitabilities of the damped plate at the points located at its center and other antinodes of vibrations, as measured with and without the absorber.
Main results.The effect of the suggested resonant plated vibration absorber (a metal strap fastened by a polymeric tape) was 19 dB. Installation of the improved layered resonant vibration absorber allows ~37 dB reduction of the plate vibration at the lowest resonant frequency. At the rest of the resonant bending frequencies of the plate, the absorber efficiency was 17–29 dB.
Conclusion.It has been shown that a tuned multy resonant plated vibration absorber with point fastening to the plate has a high efficiency, as compared to the case when the contact area is the entire surface of the resonating strap. Practical importance of this work is the possibility to apply frequency-adjusted layered plated vibration absorbers with point fastening to the damped structural plate, which mitigates resonant peaks of structural vibration to their minimum levels.

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