Journal
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
Volume 98, Issue -, Pages 32-42Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijnonlinmec.2017.10.002
Keywords
Metamaterial beam; Vibration absorbers; Nonlinear vibration damping; Multi-mode control
Categories
Funding
- Texas A&M University at Qatar
- European Office of Aerospace Research and Development/Air Force Office of Scientific Research Grant [FA9550-14-1-0082 DEF]
Ask authors/readers for more resources
In this work the multi-mode vibration absorption capability of a nonlinear metamaterial beam is investigated. A Euler-Bernoulli beam is coupled to a distributed array of nonlinear spring-mass subsystems acting as local resonators/vibration absorbers. The dynamic behavior of the metamaterial beam is first investigated via the classical approach employed for periodic structures by which the frequency stop bands of the single cell are determined. Subsequently, the frequency response is obtained for the metamaterial beam to study a multi-frequency stop band system by adding an array of embedded nonlinear local resonators. A path following technique coupled with a differential evolutionary optimization algorithm is adopted to obtain the optimal frequency-response curves of the metamaterial beam in the nonlinear regime. The use of the local absorbers, via a proper tuning of their constitutive parameters, allows a significant reduction of the metamaterial beam oscillations associated with the lowest three vibration modes. (C) 2017 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available