Toward structurally integrated locally resonant metamaterials for vibration attenuation

Jascha U. Schmied; Christopher Sugino; Andrea Bergamini; Paolo Ermanni; Massimo Ruzzene; Alper Erturk

doi:10.1117/12.2260306

11 April 2017 Toward structurally integrated locally resonant metamaterials for vibration attenuation

Jascha U. Schmied, Christopher Sugino, Andrea Bergamini, Paolo Ermanni, Massimo Ruzzene, Alper Erturk

Proceedings Volume 10164, Active and Passive Smart Structures and Integrated Systems 2017; 1016413 (2017) https://doi.org/10.1117/12.2260306
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

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.

Citation Download Citation

Jascha U. Schmied, Christopher Sugino, Andrea Bergamini, Paolo Ermanni, Massimo Ruzzene, and Alper Erturk "Toward structurally integrated locally resonant metamaterials for vibration attenuation", Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 1016413 (11 April 2017); https://doi.org/10.1117/12.2260306

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