Dynamics of a linear beam with an attached local nonlinear energy sink

Georgiades, Fotios and Vakakis, Alexander, F. (2007) Dynamics of a linear beam with an attached local nonlinear energy sink. Communications in Nonlinear Science and Numerical Simulation, 12 (5). pp. 643-651. ISSN 1007-5704

Full content URL: http://www.sciencedirect.com/science/article/pii/S...


Item Type:Article
Item Status:Live Archive


We provide numerical evidence of passive and broadband targeted energy transfer from a linear flexible beam under shock excitation to a local essentially nonlinear lightweight attachment that acts, in essence, as nonlinear energy sink—NES. It is shown that the NES absorbs shock energy in a one-way, irreversible fashion and dissipates this energy locally, without 'spreading' it back to the linear beam. Moreover, we show numerically that an appropriately designed and placed NES can passively absorb and locally dissipate a major portion of the shock energy of the beam, up to an optimal value of 87%. The implementation of the NES concept to the shock isolation of practical engineering structures and to other applications is discussed.

Additional Information:Available online 9 September 2005
Keywords:Nonlinear targeted energy transfer, Georgiadis
Subjects:H Engineering > H340 Acoustics and Vibration
H Engineering > H143 Structural Mechanics
H Engineering > H342 Vibration
H Engineering > H300 Mechanical Engineering
H Engineering > H140 Mechanics
H Engineering > H142 Solid Mechanics
H Engineering > H310 Dynamics
H Engineering > H210 Structural Engineering
Divisions:College of Science > School of Engineering
ID Code:9475
Deposited On:17 May 2013 10:37

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