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人工晶体学报 ›› 2025, Vol. 54 ›› Issue (12): 2127-2135.DOI: 10.16553/j.cnki.issn1000-985x.2025.0138

• 研究论文 • 上一篇    下一篇

三螺旋梁声子晶体的低频带隙仿真研究

薛静怡1(), 胡启国1(), 颜招强2, 刘瀛3, 张丕柱1   

  1. 1.重庆交通大学机电与车辆工程学院,重庆 400074
    2.四川兆强钛磁科技股份有限公司,成都 611130
    3.北京石油机械有限公司,北京 102206
  • 收稿日期:2025-07-01 出版日期:2025-12-20 发布日期:2026-01-04
  • 通信作者: 胡启国,博士,教授。E-mail:cqjtuhqg@163.com
  • 作者简介:薛静怡(2001—),女,重庆市人,硕士研究生。E-mail:857653251@qq.com
  • 基金资助:
    国家自然科学基金(52175042)

Simulation Study of Low-Frequency Bandgap for Triple Helix Beam Phononic Crystal

XUE Jingyi1(), HU Qiguo1(), YAN Zhaoqiang2, LIU Ying3, ZHANG Pizhu1   

  1. 1. School of Mechatronics and Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China
    2. Sichuan Zhaoqiang Titanium Magnetic Technology Co. ,Ltd. ,Chengdu 611130,China
    3. Beijing Petroleum Machinery Co. ,Ltd. ,Beijing 102206,China
  • Received:2025-07-01 Online:2025-12-20 Published:2026-01-04

摘要: 针对工程中的低频振动控制问题,本文设计了一种三螺旋梁声子晶体结构,采用有限元法和等效模型进行深入研究,发现该结构具有良好的低频减振特性。研究结果表明:该声子晶体在47~99 Hz产生带隙;带隙频段内有效质量呈现负值特性,验证了全反射隔振机理;传输损耗数值模拟进一步证实了带隙范围内振动能量的显著衰减;该声子晶体结构对不同工作条件下的线性载荷、点载荷及扭矩均表现出优异的隔振性能。参数优化研究结果表明,通过调节螺旋板厚度、螺旋槽宽度及增大圆柱体振子半径等几何参数,能够实现更低频率和更大带宽。本研究对于解决低频振动控制问题具有一定参考意义和工程应用价值。

关键词: 声子晶体; 局域共振; 低频减振; 带隙特性; 等效质量; 传输损耗

Abstract: To mitigate low-frequency vibrational disturbances in engineering applications, this study proposes a triple-helix beam phononic crystal configuration, comprehensive finite element analysis and equivalent modeling demonstrating its superior low-frequency vibration attenuation characteristics. The results indicate that the phononic crystal exhibits a complete bandgap in the range of 47~99 Hz. Within this bandgap, the effective mass became negative, confirming the full reflection vibration isolation mechanism. Transmission loss simulations further corroborate substantial vibration energy attenuation across the bandgap frequencies. Additionally, the phononic crystals demonstrate robust vibration isolation performance under diverse loading conditions, including distributed, concentrated, and torsional loads. The parametric optimization study reveals that precise adjustment of the helix plate thickness, groove width and cylindrical oscillator radius enabled the realization of the band structure with lower frequency and significantly greater bandwidth. This study provides valuable insights and practical engineering significance for low-frequency vibration mitigation.

Key words: phononic crystal; local resonance; low-frequency vibration reduction; bandgap characteristic; equivalent quality; transmission loss

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