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10 May 2024 A roadmap for truncation resonance placement in lattice-based phononic materials
Hasan B. Al Ba'ba'a, Hosam Yousef, Mostafa A. Nouh
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Proceedings Volume 12946, Active and Passive Smart Structures and Integrated Systems XVIII; 129460H (2024) https://doi.org/10.1117/12.3023036
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States
Abstract
Phononic materials act as mechanical filters of incident acoustic and vibrational loads. Generally speaking, they attenuate wave propagation within bandgaps and resonate outside them. Nonetheless, elastic periodic lattices often exhibit “truncation resonances” inside bandgaps when certain conditions are met. This study provides a generalized roadmap for the design and selective placement of truncation resonances in such lattices, integrating all factors that play a role in the onset of truncation resonances and shape its dynamic response. This framework is then experimentally validated using a canonical physical realization of differently-truncated finite phononic lattices.
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Hasan B. Al Ba'ba'a, Hosam Yousef, and Mostafa A. Nouh "A roadmap for truncation resonance placement in lattice-based phononic materials", Proc. SPIE 12946, Active and Passive Smart Structures and Integrated Systems XVIII, 129460H (10 May 2024); https://doi.org/10.1117/12.3023036
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KEYWORDS
Acoustics
Attenuation
Design
Elasticity
Tunable filters
Vibration
Wave propagation
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