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10 May 2024 Multi-mode extremal architected materials with cubic symmetry
Yunya Liu, Pai Wang, Christian Kern, Bolei Deng
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Proceedings Volume 12947, Behavior and Mechanics of Multifunctional Materials XVIII; 129470H (2024) https://doi.org/10.1117/12.3010079
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States
Abstract
We report a comprehensive design guide for crystalline metamaterials with cubic elasticity - the simplest anisotropic case specified by three elastic constants only. To clarify some popular misconceptions, we first present a discussion about the symmetry requirements. Next, we demonstrate a complete design protocol for periodic structures that are guaranteed to exhibit cubic elastic behaviors, with an emphasis on designs without any four-fold (i.e., 90 degrees) rotational symmetry or mirror symmetry. Further, we show some examples with different extreme anisotropic cases as well as functionalities for wave manipulation.
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Yunya Liu, Pai Wang, Christian Kern, and Bolei Deng "Multi-mode extremal architected materials with cubic symmetry", Proc. SPIE 12947, Behavior and Mechanics of Multifunctional Materials XVIII, 129470H (10 May 2024); https://doi.org/10.1117/12.3010079
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KEYWORDS
Metamaterials
Design and modelling
Elasticity
Acoustics
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