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Study on energy propagation and noise radiation in plates containing the array of acoustic black holes

  • Beihang University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The vehicle body panel containing acoustic black hole indentations is potential to solve the contradiction between the structural lightweight and the control of vibration and noise. In this paper, a finite element plate model containing the array of five ABH indentations is established and simulated, and the power flow method is introduced to analyze the energy propagation characteristics arising from ABH effect. Then the average vibration power density in different plate sections is calculated to quantitatively study the energy focalization effect. Next, the plate model containing ABH indentations with damping layer and their energy dissipation effects are investigated. Finally, the radiated sound power levels of the structures under a given excitation are also calculated and discussed. This work is helpful to understand the characteristics of plates containing ABH array in reducing vibration and noise radiation.

源语言英语
主期刊名Proceedings of 2020 International Congress on Noise Control Engineering, INTER-NOISE 2020
编辑Jin Yong Jeon
出版商Korean Society of Noise and Vibration Engineering
ISBN(电子版)9788994021362
出版状态已出版 - 23 8月 2020
活动49th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2020 - Seoul, 韩国
期限: 23 8月 202026 8月 2020

出版系列

姓名Proceedings of 2020 International Congress on Noise Control Engineering, INTER-NOISE 2020

会议

会议49th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2020
国家/地区韩国
Seoul
时期23/08/2026/08/20

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