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arXiv 2607.01092physics.app-ph
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用于被动振动控制的织物声子晶体

Fabric Phononic Crystals for Passive Vibration Control

University of Wisconsin–Madison(威斯康星大学麦迪逊分校)

Michael Y Wang, Hridyesh Tewani, Marianne Fairbanks, Pavana Prabhakar, Chu Ma

AI总结:

提出将织物编织图案设计为声子晶体,通过双编织结合软棉和硬铜夹杂形成周期晶格,实现被动滤波和振动路由,实验证实了带隙和拓扑态。

摘要:

织物中的编织图案传统上用于美学目的,但为创建作为传感、滤波和信号处理被动层的超材料提供了很大程度上尚未开发的机会。然而,织物的层级结构使得结构设计和波预测具有挑战性。在这里,我们建立了全编织织物作为声子晶体,被动滤波和路由弹性振动。通过双编织,我们将柔软的棉编织与坚硬的编织铜夹杂物集成,形成具有工程色散的周期性织物晶格。一个多尺度建模框架,结合编织块均匀化与有效属性宏观模型,实现了声子晶体的计算高效设计。模拟和实验证实了有限织物晶体中面外振动的显著声子带隙,而等效纯棉织物在相应频率范围内没有带抑制。基于同一平台,我们实现了全编织的高阶拓扑绝缘体。模态分析和传输测量揭示了带隙内边缘态和局域角态。这些结果表明,声子带隙和拓扑态可以直接通过编织图案和材料对比度编码,从而实现用于传感、触觉界面、机器人和噪声抑制的被动振动管理层和多功能波导织物。

英文摘要:

Weaving patterns in fabrics, traditionally used for aesthetic purposes, present a largely untapped opportunity to create metamaterials that serve as passive layers for sensing, filtering, and signal processing. However, the hierarchical architecture of fabrics makes structural design and wave prediction challenging. Here, we establish fully woven fabrics as phononic crystals that passively filter and route elastic vibrations. Using double weaving, we integrate a soft cotton weave with stiff woven copper inclusions to form periodic fabric lattices with engineered dispersion. A multiscale modeling framework that combines homogenization of weave blocks with an effective-property macroscale model enables computationally efficient design of phononic crystals. Simulations and experiments confirm a pronounced phononic bandgap for out-of-plane vibrations in a finite fabric crystal, while an equivalent pure cotton weave shows no band suppression in the corresponding frequency range. Building on the same platform, we realize a fully woven higher-order topological insulator. Modal analysis and transmission measurements reveal in-gap edge states and localized corner states. These results show that phononic bandgaps and topological states can be directly encoded through weaving patterns and material contrast, enabling passive vibration management layers and multifunctional waveguiding fabrics for sensing, haptic interfaces, robotics, and noise mitigation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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