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Shock and Vibration
Volume 2016, Article ID 5039796, 15 pages
http://dx.doi.org/10.1155/2016/5039796
Research Article

Dynamical Performances of a Vibration Absorber for Continuous Structure considering Time-Delay Coupling

School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Received 20 November 2015; Accepted 15 June 2016

Academic Editor: Ivo Caliò

Copyright © 2016 Xiuting Sun and Youshuo Song. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The nonlinear effect incurred by time delay in vibration control is investigated in this study via a vibration absorber coupled with a continuous beam structure. The stability of the vibration absorber coupled structure system with time-delay coupling is firstly studied, which provides a general guideline for the potential time delay to be introduced to the system. Then it is shown that there is a specific region for the time delay which can bring bifurcation modes to the dynamic response of the coupling system, and the vibration energy at low frequencies can be transferred or absorbed due to the bifurcation mode and the vibration in the corresponding frequency range is thus suppressed. The nonlinear mechanism of this vibration suppression incurred by the coupling time delay is discussed in detail, which provides a novel and alternative approach to the analysis, design, and control of vibration absorbers in engineering practice.