基于半解析法的声学黑洞梁结构参数响应面优化  

Parametric Response Surface Optimization of Acoustic Black Hole Beam Structures Based on Semi-analytical Method

作　　者：史自强 温华兵 黄惠文 SHI Ziqiang;WEN Huabing;HUANG Huiwen(Institute of Vibration and Noise,Jiangsu University of Science and Technology,Zhenjiang 212100,Jiangsu,China)

机构地区：[1]江苏科技大学能源与动力学院,江苏镇江212100

出　　处：《噪声与振动控制》2024年第3期62-66,74,共6页Noise and Vibration Control

基　　金：国防科技重点实验室基金资助项目(6142204190510)。

摘　　要：声学黑洞(Acoustic Black Hole,ABH)对弯曲波的聚集效应具有宽频、高效、实现方法简单灵活等特点,在结构减振降噪领域具有广泛的应用前景。以一维声学黑洞梁为对象,结合声学黑洞半解析建模计算方法和响应面优化方法,分析声学黑洞特征长度、截断厚度、幂律以及阻尼层特征长度和厚度这5个参数对一维声学黑洞梁减振效果的影响规律。以一维声学黑洞梁的减振效果为优化目标,对梁和阻尼的结构参数进行优化设计,优化后的一维声学黑洞梁结构在10~8000Hz频率范围内的平均加速度级降低19.03dB。研究对一维声学黑洞梁结构在减振领域的工程应用具有参考价值。Acoustic Black Hole(ABH)has a wide prospect of applications in the field of structural vibration and noise reduction because of its wide frequency band and high efficiency,simple and flexible implementation method.In this paper,a one-dimensional ABH beam is taken as the object.Combining the semi-analytical modeling calculation method and response surface optimization method,the influences of five parameters,namely,characteristic length of the ABH,truncation thickness,power law,the characteristic length and thickness of the damping layer,on the damping effect of the onedimensional ABH beam are analyzed.With the damping effect of the 1D ABH beam as the optimization target,the structural parameters of the beam and the damping are optimally designed.The optimized 1D ABH beam structure has an average acceleration level reduction of 19.03 dB in the frequency range of 10-8000 Hz.This study is of a reference value for the engineering application of 1D ABH beam structure design in the field of vibration damping.

关 键 词：声学 减振降噪 声学黑洞 半解析法 响应面优化 工程应用 

分 类 号：O32[理学—一般力学与力学基础] X96[理学—力学] O42[环境科学与工程—安全科学]