Low-frequency Locally Resonant Band-gaps in Phononic Crystal Plates with Periodic Spiral resonators
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Low-frequency Locally Resonant Band-gaps in Phononic Crystal Plates with Periodic Spiral resonators
- 发表刊物：
- Journal of Applied Physics
- 摘要：
- In this paper, low-frequency band-gaps (BGs) in a phononic crystal (PC) thin plate with periodic spiral resonators are investigated numerically and experimentally. The formation mechanisms of the BGs in the proposed structure are explained based on the modal analysis. We find that the interaction between the local resonances and the traveling wave modes in the plate is responsible for the formation of the BG in low-frequency range. This interaction strength greatly affects the bandwidth of the BG, of which the lower edge depends on the corresponding local resonance frequency. It is shown that the out-of-plane BG can be modulated by changing the geometrical parameters. The proposed PC plate is demonstrated to possess a broad out-of-plane BG in low-frequency range from 42 Hz to 150 Hz, by combining the numerical calculations with experimental measurements. The structure design and its results provide an effective way for phononic crystals to obtain broad BGs in low-frequency range, which has potential applications in the low-frequency vibration and noise reduction.
- 合写作者：
- Siwen Zhang, Jiu Hui Wu, and Zhiping Hu
- 卷号：
- Vol.113
- 页面范围：
- 163511
- 是否译文：
- 否
- 发表时间：
- 2013-03-19