层级蜂窝芯超材料的低频共振吸声机理与性能分析

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中图分类号： 文献标志码：A doi：10.3969/j.issn.1006-0316.2026.01.008

文章编号：1006-0316（2026）01-0052-08

Abstract ∵ Addressing the inherent limitations of conventional honeycomb structures in low-frequency sound absorption，particularly their insufcient absorptioncoefficientsand narrow operational bandwidth，this study introduces an innovative hierarchical honeycomb-cored acoustic metamaterial（HHAM） design.The proposed architecture incorporatesmulti-order Helmholtz resonance units in a hierarchical coupling configuration， achieving broadband quasi-perfect sound absorption covering 32% of the 200-800Hz low-frequency spectrum. Theoretical analysisand numerical simulations demonstrate that the synergistic interaction betweencoherent coupling efects and hierarchical scaling produces an optimal coupled resonance mode， generating four distinct absorption peaks including two perfect absorption points. Systematic parametric investigations elucidate the governing principles of key structural parameters （ratio factor， thickness parameter and perforation diameter）on acoustic performance，establishing that optimized hierarchical configurations enable precise control over the effective absorption range.Experimental validation via impedance tube testing confirms design reliability，with less than 3% deviation in absorption peak frequencies compared to numerical predictions. This research advances a novel solution for low-frequency noise mitigation inrail transit systems and related engineering applications.

Key words ∵ acoustic metamaterials ; quasi-perfect absorption ;honeycomb structure ; hierarchical design

在工程领域，低频噪声控制是声学研究的核心挑战，尤其对航空航天、高速铁路等产业影响显著。（剩余7413字）