河南科技大学学报（自然科学版）2025，Vol.46Issue(5)：10-16,25,8.DOI:10.15926/j.cnki.issn1672-6871.2025.05.002
声学黑洞局域共振复合结构的宽频振动抑制研究
Research on Broadband Vibration Suppression of Acoustic Black Hole-Locally Resonant Coupled Structures
摘要
Abstract
To overcome the limitations of the acoustic black hole damping mechanism and achieve vibration suppression in beam and plate structures across a broader frequency range,a composite structure formed by sequentially arranging embedded local resonant units with acoustic black holes was proposed.Through numerical simulations and experimental validation,the bandgap characteristics and vibration attenuation performance of the composite structure were systematically analyzed.The results demonstrate that the structure generates a local resonance bandgap in the low-frequency range from 424.4 Hz to 676.2 Hz,effectively suppressing flexural wave propagation.In the high-frequency region,the energy-focusing effect of the acoustic black hole in the composite structure enhances vibration attenuation performance compared with a single local resonant structure.Additionally,the damping effect of the material can also further broaden the vibration suppression frequency band of the structure.Experimental results confirm that the proposed structure achieves remarkable vibration suppression over a wide frequency range,integrating the advantages of low-frequency bandgap characteristics and high-frequency energy concentration above 726.25 Hz.关键词
声学黑洞/振动抑制/局域共振/带隙Key words
acoustic black hole/vibration suppression/local resonant/bandgap分类
通用工业技术引用本文复制引用
杨传猛,于洪涛,鲁霁雯,李亮,郑大远..声学黑洞局域共振复合结构的宽频振动抑制研究[J].河南科技大学学报（自然科学版）,2025,46(5):10-16,25,8.基金项目
国家自然科学基金青年项目(52205095) （52205095）
河南省自然科学基金优秀青年科学基金项目(252300421105) （252300421105）
