Folded sheet resonators that aim at low frequency attenuation of surface elastic waves in solids

Xu, Feilong; Yang, Zhi; He, Xiaodong; Zhen, Liang

doi:10.1063/1.5135755

Cited by 8 publications

(2 citation statements)

References 55 publications

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“…Therefore, the local resonance mechanism was introduced in seismic metamaterials. [18][19][20][21][22][23] For example, Palermo et al [18] used a spindle-structured unit cell containing soft bearings and a steel mass block for constructing buried seismic metamaterials, and they also provided a dispersion equation for Rayleigh wave DOI: 10.1002/pssb.202200485 Seismic metamaterials are newly emerging structural-functional materials for controlling seismic waves, and they provide a new solution for building earthquake resistance. However, existing seismic metamaterials need to be further improved to achieve low-frequency and broadband performance.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the local resonance mechanism was introduced in seismic metamaterials. [ 18–23 ] For example, Palermo et al [ 18 ] used a spindle‐structured unit cell containing soft bearings and a steel mass block for constructing buried seismic metamaterials, and they also provided a dispersion equation for Rayleigh wave propagation. Colombi et al [ 23 ] studied forest trees as a naturally available locally resonant metamaterial and noted their excellent low‐frequency and broadband properties in the interesting seismic frequency range.…”

Section: Introductionmentioning

confidence: 99%

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New Metamaterial Foundation Based on Novel Omnidirectional High‐Performance Inerter Mechanism

Zhang

Wang

Shu

et al. 2023

Physica Status Solidi (b)

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Seismic metamaterials are newly emerging structural–functional materials for controlling seismic waves, and they provide a new solution for building earthquake resistance. However, existing seismic metamaterials need to be further improved to achieve low‐frequency and broadband performance. Herein, a new metamaterial foundation containing a novel omnidirectional high‐performance inerter mechanism is proposed for low‐frequency protection against seismic waves. The research results show that this metamaterial foundation can effectively generate a lower frequency bandgap in any direction of the horizontal plane. Subsequently, the inerter mechanism is improved, which enables the metamaterial foundation to provide vibration protection for different specific frequency bands. The bandwidth of the corresponding frequency band can be adjusted flexibly by appropriately controlling the design parameters. Subsequently, to enhance the broadband attenuation performance, the inerter mechanism is further improved, which enables the metamaterial foundation to produce an ultrabroadband attenuation effect. Finally, the effect of the building mass on the metamaterial antiseismic system is investigated, and it is shown that the attenuation width of the metamaterial antiseismic system further increases as the building mass increases. The designed inerter mechanism has potential for applications in other scenarios such as beams, plates, and interfaces.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New Metamaterial Foundation Based on Novel Omnidirectional High‐Performance Inerter Mechanism

Zhang

Wang

Shu

et al. 2023

Physica Status Solidi (b)

View full text Add to dashboard Cite

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Programmable Truncated Cuboctahedral Origami Metastructures Actuated by Shape Memory Polymer Hinges

Chen,

Shao,

Feng

et al. 2024

Advcd Theory and Sims

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Over the past few decades, origami‐inspired structures have attracted great attention across various engineering fields due to their unique geometric and mechanical characteristics. Additionally, combining origami structures with active materials is employed to achieve programmable mechanical properties and self‐reconfigurability under external stimuli. In this work, a novel family of truncated cuboctahedral origami metastructures is proposed. These designs integrate shape memory polymers (SMPs) to actively achieve programmable mechanical properties and shape memory behavior. By utilizing SMPs for the creases and stiff materials for the panels, this approach enables deformation along the creases while enhancing the overall structural robustness. The mechanical properties and shape memory processes of these structures are investigated in detail. The proposed origami metastructures exhibit a negative Poisson's ratio and demonstrate excellent energy storage capabilities. Notably, their mechanical properties can be programmed by controlling both temperature and geometric parameters. More particularly, their Poisson's ratio can be tuned within a range of zero to −1. As a result, these truncated cuboctahedral origami metastructures hold significant potential for applications across various engineering domains, particularly in composite structures and active metamaterials.

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Low-frequency and wide bandgap seismic metamaterials for Rayleigh wave attenuation

Zhang,

Yu,

Liu

et al. 2023

Engineering Structures

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Folded sheet resonators that aim at low frequency attenuation of surface elastic waves in solids

Abstract: If it is the author's pre-published version, changes introduced as a result of publishing processes such as copy-editing and formatting may not be reflected in this document. For a definitive version of this work, please refer to the published version.

Cited by 8 publications

References 55 publications

New Metamaterial Foundation Based on Novel Omnidirectional High‐Performance Inerter Mechanism

New Metamaterial Foundation Based on Novel Omnidirectional High‐Performance Inerter Mechanism

Programmable Truncated Cuboctahedral Origami Metastructures Actuated by Shape Memory Polymer Hinges

Low-frequency and wide bandgap seismic metamaterials for Rayleigh wave attenuation

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