复合材料科学与工程 ›› 2026, Vol. 0 ›› Issue (5): 98-103.DOI: 10.19936/j.cnki.2096-8000.20260528.013

• 设计与工艺 • 上一篇    下一篇

复合材料层合板边界条件的声辐射特性研究

朱从云, 朱云龙, 院蕾   

  1. 中原工学院 智能机电工程学院(工业设计学院),郑州 450007
  • 收稿日期:2025-04-14 出版日期:2026-05-28 发布日期:2026-07-01
  • 作者简介:朱从云(1971—),男,博士,教授,硕士生导师,研究方向为振动与噪声控制,zcy711126@163.com。
  • 基金资助:
    中国纺织工业联合会科技指导性项目(2017053)

Acoustic radiation characterization of composite plywood boundary conditions

ZHU Congyun, ZHU Yunlong, YUAN Lei   

  1. School of Intelligent Mechatronics Engineering (School of Industrial Design), Zhongyuan University of Technology, Zhengzhou 450007, China
  • Received:2025-04-14 Online:2026-05-28 Published:2026-07-01

摘要: 针对复合材料层合板在不同边界条件下的声辐射特性,本文基于分层理论与有限元分析,结合声辐射模态理论,系统分析了四边固支、简支和自由边界条件下单向、对称及反对称铺设方式对结构振动及声辐射功率的影响规律。通过推导声功率关于铺设方式和边界条件的灵敏度公式,揭示了铺层顺序与边界约束的交互作用机制。结果表明:固支边界会显著增强低频声辐射,而自由边界下声功率整体最低;反对称铺层在固支条件下可有效抑制低频声辐射,而单向铺层在高频段降噪效果最优。

关键词: 声学, 复合材料层合板, 有限元分析, 声辐射, 边界条件

Abstract: For the acoustic radiation characteristics of composite laminates under different boundary conditions, this paper systematically analyzes the effects of unidirectional, symmetric and asymmetric layup modes on structural vibration and acoustic radiated power under four-faceted fixed, simply supported and free boundary conditions based on delamination theory and finite element analysis, combined with the theory of acoustic radiation modes. The interaction mechanism between layup order and boundary constraint is revealed by deriving the sensitivity formula of sound power for laying mode and boundary condition. The results show that the fixed-support boundary significantly enhances the low-frequency acoustic radiation, while the sound power is the lowest at the free boundary. Antisymmetric layering can effectively suppress low frequency acoustic radiation under fixed support conditions, while unidirectional layering has the best noise reduction effect in high frequency band.

Key words: acoustics, composite laminates, finite element analysis, acoustic radiation, boundary conditions

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