关于多个平行连接共振器的六角声学元材料细胞的研究,可调节的穿孔率
Hongxiang Cheng1, Fei Yang2, Xinmin Shen2
1Air Force Second Aviation Equipment Training Base, Shenyang 110000, China.
Materials (Basel, Switzerland)
|August 12, 2023
概括
这项研究引入了一种可调节的声学超材料,用于降低噪声. 智能结构提供可调节的吸声,在有限的空间中有效减少低频噪声.
科学领域:
- 声学 声学 在声学上
- 材料科学 材料科学 材料科学
- 超材料是什么?超材料是什么?
背景情况:
- 有限的占用空间和各种噪声谱需要适应性的吸声器.
- 现有的解决方案往往缺乏可调性和高效的空间利用.
研究的目的:
- 提出和验证一种具有可调音吸声性能的六角声学元材料.
- 优化超材料设计,以有效降低低频噪声.
主要方法:
- 六角声学元材料电池的设计,具有多个并行连接的共振器和可调的穿孔率.
- 通过声学有限元模拟和子搜索算法进行联合优化.
- 通过化丝制造和阻抗管检测进行实验验证.
主要成果:
- 在目标频率范围 (650-1150 Hz, 700-1200 Hz, 700-1000 Hz) 中,达到高达0.8807的平均声音吸收系数.
- 在模拟和实验数据之间证明一致性,验证模型和优化方法.
- 突出调节的吸声和有效的低频降噪.
结论:
- 拟议的可调节声学元材料为在受限制环境中降低噪声提供了有希望的解决方案.
- 模拟和优化算法的组合有效指导高性能声学设备的设计.
- 由于其适应性,效率和性能,超材料的设计促进了实际应用.
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