Engineering wave nonreciprocity in a nonlocal metabeam

Qian Wu; Guoliang Huang

doi:10.1117/12.2657638

28 April 2023 Engineering wave nonreciprocity in a nonlocal metabeam

Qian Wu, Guoliang Huang

Author Affiliations +

Proceedings Volume PC12483, Active and Passive Smart Structures and Integrated Systems XVII; PC1248308 (2023) https://doi.org/10.1117/12.2657638
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States

Abstract

We investigate theoretically and experimentally a nonlocal micropolar metabeam shunted with piezoelectric elements modulated by electronic feed-forward control. Since the nonlocal feed-forward control breaks inversion symmetry, the proposed metabeam supports nonreciprocal flexural wave propagation, featuring unidirectional amplification/attenuation and non-Hermitian skin effect. The unidirectional wave propagation is attributed to the energy conversion between electronic and mechanical parts. Also, the nonlocal metabeam is capable of realizing mechanical roton-like dispersion whose reciprocity can be broken by the programmable feed-forward control. The nonlocal micropolar metabeam could pave the ways for designing non-Hermitian topological mechanical insulators and metamaterials.

Conference Presentation

Citation Download Citation

Qian Wu and Guoliang Huang "Engineering wave nonreciprocity in a nonlocal metabeam", Proc. SPIE PC12483, Active and Passive Smart Structures and Integrated Systems XVII, PC1248308 (28 April 2023); https://doi.org/10.1117/12.2657638

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE