系列和并行合3D打印的微孔面板和卷轴四分之一波长管
Giuseppe Catapane1, Giuseppe Petrone1, Olivier Robin2
1Laboratory for Promoting Experiences in Aeronautical Structures and Acoustics, Department of Industrial Engineering-Aerospace Section, Università degli Studi di Napoli "Federico II," Via Claudio 21, Napoli, 80125, Italy.
The Journal of the Acoustical Society of America
|November 13, 2023
概括
这项研究引入了一种混合吸声器,它结合了微孔面板和卷轴四分之一波长管. 平行配置提供了更好的吸声性能,通过3D打印和实验室测试进行验证.
科学领域:
- 声学 声学 在声学方面
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
背景情况:
- 微孔面板 (MPP) 吸声器对于建筑和运输声学至关重要.
- 提高MPP宽带声音吸收率通常涉及将它们与共振或其他声音吸收系统相结合.
- 混合方法旨在在更广泛的频率范围内实现高声吸收.
研究的目的:
- 提出和研究一种新的混合吸声器,将MPP与卷轴四分之一波长管 (CQWT) 集成在一起.
- 分析混合MPP-CQWT系统的系列和并行配置的声学性能.
- 评估3D打印技术的可行性和可重复性,以制造拟议的混合吸声器.
主要方法:
- 使用分析建模来了解混合系统的声学行为.
- 使用数值模拟 (例如,有限元法) 来预测声音吸收特性.
- 进行实验测量以验证分析和数值发现.
- 两种不同的3D打印技术进行了比较,用于样品制造.
- 通过测试来自不同打印机和实验室的样本来评估可重复性.
主要成果:
- 分析了混合MPP-CQWT吸收器的系列和并行配置.
- 与系列配置相比,并行配置显示出优越的吸声性能.
- 3D打印技术提出了实际实施的挑战,但使样品制造成为可能.
- 平行混合吸收器的性能可以在不同的3D打印机和测试环境中重现.
结论:
- 混合微孔面板和卷轴四分之一波长管吸收器为噪音控制提供了一个有希望的解决方案.
- 平行配置提供了增强的声音吸收,虽然它更复杂的实施.
- 3D打印是一种可行的制造方法,并行设计的可复制性得到证实.
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