Abstract
Phononic crystals embedded with acoustic black hole (ABH) structure have excellent performance absorbing structural waves in elastic bodies. However, it is not easy to be applied in practice because of the narrow sound absorption band. In this paper, we propose a new type of phononic crystal that embeds the acoustic black hole structure and destructive interference structure. The simulated and measured elastic wave transmission indicate that the vibration in the structure is reduced by 40 dB in the broad range of 100–50,000 Hz, which may provide a new path for wide-frequency vibration isolation and noise control.
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The data sets analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
This work was supported by the Natural Science Foundation of China [Grant Number 12072221], the Fundamental Research Funds for the Central Universities [Grant Number 2013017] and the Ten Thousand Talents Program.
Funding
This research was supported by National Natural Science Foundation of China (Grant Nos. 12232014, 12072221).
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Pengfei Fu: conceptualization, methodology, software, data curation, writing—original draft. Xiaofei lyu: validation, investigation. Tianzhi Yang: conceptualization, funding acquisition, writing—review and editing. Li-Qun Chen: writing—review and editing.
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Fu, P., lyu, X., Yang, T. et al. Wide-band vibration isolation induced by merging acoustic black holes and destructive interference. Appl. Phys. A 130, 416 (2024). https://doi.org/10.1007/s00339-024-07540-5
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DOI: https://doi.org/10.1007/s00339-024-07540-5