摘要
针对传统Helmholtz共振腔吸声材料通常采用增大结构尺寸以控制中低频段噪声问题,提出一种基于Z曲线盘绕结构的多胞元声学超材料,旨在实现较小尺寸下低频宽带的吸声效果。利用COMSOL Multiphysics建立该盘绕结构的压力-热黏性声学有限元模型,探究胞元盘绕结构几何参数对吸声性能的影响,开展多胞元组合结构吸声性能分析。通过3D打印制备多胞样品并进行阻抗管测试实验,验证仿真结果的有效性,结果表明该声学超材料具有229~850 Hz范围内连续高效的吸声性能,可为解决低频噪声控制问题提供新思路。
To achieve low-frequency noise control for traditional Helmholtz resonance cavity,a novel multi-cell cocoupled sound absorption metamaterial with a Z-curve winding configuration was introduced.Utilizing COMSOL Multiphysics,the pressure-thermoviscous acoustic finite element model for the coiling structure was constructed to detect the effects of the geometric parameters on the material′s sound absorption efficacy.The sound absorption capability of the multi-cell combined structure was analyzed.The multi-cell sample was prepared by 3D printing and its acoustic properties were validated by using an impedance tube test.The experiment results confirm the simulation results,indicating that the acoustic metamaterial has continuous and efficient sound absorption performance in the range of 229-850 Hz.This work has provided a new idea for solving the problem of low frequency noise control.
作者
毕新锐
李智琦
陈文炯
孔卫宏
朱强
肖鹏
BI Xinrui;LI Zhiqi;CHEN Wenjiong;KONG Weihong;ZHU Qiang;XIAO Peng(School of Naval Architecture and Ocean Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China;China Sepcial Vehicle Research Institute,Jingmen 448000,Hubei,China)
出处
《噪声与振动控制》
北大核心
2025年第5期53-58,145,共7页
Noise and Vibration Control
基金
国家自然科学基金资助项目(12072058)。
关键词
声学
Z曲线
声学超材料
低频宽带吸声
盘绕结构
实验测试
acoustics
Z-curve
acoustic metamaterial
low frequency broadband sound absorption
coiled structure
experimental test
