蜂窝微穿孔结构的宽频吸声优化设计与分析

燕山林,吴锦武,熊引,陈杰,李贺铭

振动与冲击 ›› 2022, Vol. 41 ›› Issue (19) : 248-253.

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (19) : 248-253.
论文

蜂窝微穿孔结构的宽频吸声优化设计与分析

  • 燕山林,吴锦武,熊引,陈杰,李贺铭
作者信息 +

Optimization design and analysis of broadband sound absorption for honeycomb micro-perforated structure

  • YAN Shanlin, WU Jinwu, XIONG Yin, CHEN Jie, LI Heming
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摘要

单层微穿孔板结构有着吸声频带较窄、吸声性能不佳等缺点。为了提高单层微穿孔板结构的降噪效果,作者依据微穿孔板结构的背腔高度改变时,结构的共振频率会发生移动的特点,结合声电类比原理和粒子群优化算法,从理论模型、仿真计算以及实验测试三方面设计分析了一种拥有宽频高吸声性能的单层蜂窝微穿孔结构,并且从结构相对声阻抗率的实部和虚部入手,对利用不等腔深提高结构吸声性能的原理进行了分析。研究结果表明:结构在1140-3000Hz内的吸声系数均在0.9以上,验证了利用粒子群优化算法设计宽频吸声体的可行性。
关键词:蜂窝微穿孔;腔深;粒子群;优化算法;宽频吸声体

Abstract

The single-layer microperforated plate structure has the disadvantages of narrow sound absorption frequency band and inferior sound absorption performance. In order to improve the noise reduction performance of single-layer microperforated plate structure, a single-layer honeycomb micro-perforated structure with highly efficient broadband sound absorption performance was designed and analyzed from three perspectives of theoretical model, simulation calculation and experimental test. It was based on the characteristics that the resonant frequency of the structure could move with the the change of cavity depth. The principle of electroacoustic analogy and particle swarm optimization algorithm were used in combination. The principle of using unequal cavity depth to improve the sound absorption performance of the structure was analyzed from the real and imaginary parts of the relative acoustic impedance of the structure. The results show that the sound absorption coefficient of the structure is above 0.9 in the range of 1140-3000 Hz. The feasibility of using particle swarm optimization algorithm to design the broadband sound absorber is verified.
Key words: Honeycomb Micro-perforated plate; Cavity depth; Particle swarm; Optimization algorithm; Broadband sound absorber

关键词

蜂窝微穿孔 / 腔深 / 粒子群 / 优化算法 / 宽频吸声体

Key words

Honeycomb Micro-perforated plate / Cavity depth / Particle swarm / Optimization algorithm / Broadband sound absorber

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燕山林,吴锦武,熊引,陈杰,李贺铭. 蜂窝微穿孔结构的宽频吸声优化设计与分析[J]. 振动与冲击, 2022, 41(19): 248-253
YAN Shanlin, WU Jinwu, XIONG Yin, CHEN Jie, LI Heming. Optimization design and analysis of broadband sound absorption for honeycomb micro-perforated structure[J]. Journal of Vibration and Shock, 2022, 41(19): 248-253

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