Acoustic Black Holes for Noise and Vibration Control

用于噪声和振动控制的声学黑洞

• 批准号: 2906055
• 金额: --
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2906055
• 关键词: Acoustic; Black; Holes; Noise; Vibration

The radiation of noise and vibration from vibrating structures is a major problem in a wide variety of industrial applications and the control of vibration and the associated acoustic radiation important in many sectors. To provide advanced capability in the reduction of such noise and vibration, this research project will investigate the development of Acoustic Black Holes (ABHs) for implementation in practical structures. ABHs, which utilise a tapering in the thickness of a structure to increase the damping, have been shown to achieve high levels of vibration control without increasing the mass or adding large quantities of damping material. However, the structural integrity of such ABHs has not been investigated to date and this is key to the use of this technology in practical applications. This project will address this knowledge gap, investigate the trade-off between performance and fatigue and enable the exploitation of this advanced noise and vibration control technology.

振动结构的噪声和振动辐射是各种工业应用中的主要问题，并且振动和相关声辐射的控制在许多部门中是重要的。为了提供降低这种噪声和振动的先进能力，本研究项目将研究声学黑洞（ABH）在实际结构中的应用。ABH利用结构厚度的渐缩来增加阻尼，已经显示出在不增加质量或添加大量阻尼材料的情况下实现高水平的振动控制。然而，这种ABH的结构完整性尚未被调查的日期，这是关键，在实际应用中使用这种技术。该项目将解决这一知识差距，调查性能和疲劳之间的权衡，并实现这种先进的噪音和振动控制技术的利用。