发表机构
KU Leuven; KU Leuven Campus Diepenbeek（荷语鲁汶大学; 荷语鲁汶大学迪彭贝克校区）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对固定带隙限制，提出两种被动自适应谐振器，通过离散与连续机制原位调节共振特性，消除衰减深度与带宽的权衡。
AI 中文摘要
局域共振超材料是轻量化减振降噪的成熟途径，但其性能受限于设计阶段固定的带隙。实际应用中，激励频率很少保持恒定，会随运行条件和载荷变化，导致固定频率谐振器在条件偏离设计点时失效。现有应对策略依赖主动控制，需引入传感器、执行器和持续供电，或采用宽带和多谐振器设计，以牺牲衰减深度换取带宽。一种能够在运行环境内直接自适应调节共振特性的被动替代方案，将消除这一权衡，使局域共振超材料适用于更广泛的现实时变应用。本文提出了两种自适应谐振器概念，通过离散和连续自适应机制实现局域共振特性的原位调节。
英文摘要
Locally resonant metamaterials are an established route to lightweight attenuation of vibration and noise, but their performance is tied to a bandgap fixed at the design stage. In practice, excitation frequencies are rarely constant, as they can vary with operating conditions and loading, causing fixed-frequency resonators to lose effectiveness as conditions drift from their design point. Existing strategies to address this rely on active control, introducing sensors, actuators, and a continuous power supply, or on broadband and multi-resonator designs that trade attenuation depth for bandwidth. A passive alternative, capable of adapting its resonance characteristics directly within the operating environment, would remove this trade-off and open locally resonant metamaterials to a much wider range of real-world, time-varying applications. In this work, we present two adaptive resonator concepts that enable in-situ modification of local resonance characteristics through discrete and continuous adaptation mechanisms.
