采用合分布式动态吸收器对声黑洞光束进行增强的低频宽带振动缓解
Xiuxian Jia1,2, Fengfan Deng3, Ye Yu4,5
1Vehicle Measurement, Control and Safety Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, China.
Scientific reports
|April 12, 2025
概括
这项研究将声学黑洞 (ABH) 与动态振动吸收器 (DVA) 结合起来,有效地减少宽带振动. 实验验证和模拟证实了系统的存在.
科学领域:
- 机械工程 机械工程
- 声学 声学 在声学上
- 控制振动,控制振动.
背景情况:
- 声学黑洞 (ABH) 已知可以聚焦振动能量.
- 动态振动吸收器 (DVA) 提供精确的调整,以减少振动.
- 结合ABH和DVA为增强宽带振动缓解提供了机会,但在低频共振和实验验证方面面临挑战.
研究的目的:
- 为了研究一个集成的音响黑洞 (ABH) 和动态振动吸收器 (DVA) 系统的减振性能.
- 解决与低频多重共振相关的挑战,并为ABH+DVA方法提供实验验证.
- 分析DVA合参数的影响,并引入优化的4ABHs+4DVAs配置.
主要方法:
- 设计和制造一个轻量级的DVA与ABH光束集成.
- 在ABH+DVA组合系统上进行严格的振动实验.
- 对实验数据进行有限元模型 (FEM) 的开发和验证;在新的4ABHs+4DVA设计上执行FEM模拟.
主要成果:
- 实验证据证实了ABH+DVA集成系统显著的减振能力.
- FEM准确地预测了系统的振动特性,并通过实验结果进行验证.
- 分析显示DVA合形式和区域对振动性能的影响;4ABHs+4DVA配置有效地抑制了在切断频率以下的多重共振.
结论:
- 集成ABH和DVA为宽带振动减少提供了一个强有力的策略.
- 经过验证的FEM为优化ABH+DVA系统提供了可靠的工具.
- 新的4ABHs+4DVAs设计在广泛的频率范围内展示了优越的振动抑制.
关键词:
一个声学黑洞的黑洞.动态振动吸收器 动态振动吸收器验证实验验证实验验验证实验验验证实验验验证实验验验证实验验验证实验验验证实验验验证实验验验证实验验验证实验验验证实验验验证实验验验证实验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验验低频低频的频率是什么多模式振动减弱 多模式振动减弱更多相关视频
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