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Proceedings Paper

Toward structurally integrated locally resonant metamaterials for vibration attenuation
Author(s): Jascha U. Schmied; Christopher Sugino; Andrea Bergamini; Paolo Ermanni; Massimo Ruzzene; Alper Erturk
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Paper Abstract

In this contribution, we explore the use of locally resonant metamaterials for multi-functional structural load- bearing concepts using analytical, numerical, and experimental techniques. Locally resonant metamaterials exhibit bandgaps at wavelengths much larger than the lattice dimension. This is a promising feature for low- frequency vibration attenuation. The presented work aims to investigate highly integrated structural concepts and experimentally validated prototypes for vibration reduction in load-bearing applications. The goal is to explore and extend the design space of lightweight structural systems, by designing multi-functional periodic structural elements, preserving structural stiffness while concurrently enabling sufficiently wideband damping performance over a target frequency range of interest. Following a generalized theoretical modeling framework for bandgap design and analysis in finite structures, the focus is placed on the design, fabrication, and analysis of a load-carrying frame development with internally resonant components. Finite-element modeling is employed to design and analyze the frequency response of the frame and simplified analytical solution is compared with this numerical solution. Experimental validations are presented for a 3D-printed prototype. The effects of various parameters are reported both based on numerical and experimental findings.

Paper Details

Date Published: 11 April 2017
PDF: 9 pages
Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 1016413 (11 April 2017); doi: 10.1117/12.2260306
Show Author Affiliations
Jascha U. Schmied, ETH Zurich (Switzerland)
Christopher Sugino, Georgia Institute of Technology (United States)
Andrea Bergamini, EMPA (Switzerland)
Paolo Ermanni, ETH Zurich (Switzerland)
Massimo Ruzzene, Georgia Institute of Technology (United States)
Alper Erturk, Georgia Institute of Technology (United States)

Published in SPIE Proceedings Vol. 10164:
Active and Passive Smart Structures and Integrated Systems 2017
Gyuhae Park, Editor(s)

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