Passive targeted energy transfers and strong modal interactions in a thin plate with strongly nonlinear end attachments of different configurations

Georgiades, Fotios and Vakakis, Alexander, F. (2007) Passive targeted energy transfers and strong modal interactions in a thin plate with strongly nonlinear end attachments of different configurations. ASME Proceedings | 21st Biennial Conference on Mechanical Vibration and Noise . pp. 1355-1370. ISSN UNSPECIFIED

Full content URL: http://dx.doi.org/10.1115/DETC2007-34174

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Abstract

In this paper we examine Targeted Energy Transfers
(TETs) and nonlinear modal interactions occurring in a thin
cantilever plate lying on an elastic foundation with strongly
nonlinear lightweight attachments of different configurations.
Under shock excitation of the plate we systematically study,
nonlinear modal interactions and passive broadband targeted
energy transfer phenomena between the plate and attachments of
the following configurations: a single ungrounded, strongly
(essentially) nonlinear single-degree-of-freedom (SDOF) NES;
multiple SDOF attachments attached at different points of the
plate; and a single multi-degree-of-freedom (MDOF) attachment
with multiple essential stiffness nonlinearities. We perform
parametric studies by varying the parameters and location of the
attachments, in order to optimize TETs from the plate to the NES.
We examine in detail the underlying mechanisms influencing
TETs by means of Hilbert-Huang Transforms in combination with
Wavelet Transforms. These transforms enable one to
systematically study the strong modal interactions between the
essentially nonlinear attachments and different plate modes. The
efficacy of using this type of essentially nonlinear attachments as
passive absorbers of broadband vibration energy is discussed.

Additional Information:Proceedings ASME LAS VEGAS 2007 Int. Design Engineering Technical Conferences, DETC2007-34174 ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference Volume 1: 21st Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C Las Vegas, Nevada, USA, September 4–7, 2007
Keywords:TETs, Georgiadis
Subjects:H Engineering > H142 Solid Mechanics
H Engineering > H310 Dynamics
H Engineering > H342 Vibration
H Engineering > H140 Mechanics
Divisions:College of Science > School of Engineering
ID Code:9497
Deposited On:30 May 2013 09:30

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