针对船舶等大型支撑结构减振降噪需求问题，本文基于局域共振原理设计一种低频吸振器，将其布置在低频传振结构上，组成低频减振结构，保证原结构的内部流通性和承重性能基础上，低频吸振器有效地抑制了结构中低频振动的传递。本文介绍局域共振吸振器的设计原理并分析其低频减振特性及各几何参数对其减振性能的影响，讨论布置低频吸振器对结构低频减振效果的影响，通过布置3个不同吸振器来抑制在布置3个相同吸振器时出现在共振频段左右新的共振峰值。通过对比它们的归一化振动幅值，表明布置低频吸振器对结构低频振动具有良好的减振效果，其中，布置3个不同低频吸振器减振效果最好。
To the vibration and noise reduction requirements of large structural support structures such as ships, a low-frequency vibration absorber was designed based on the local resonance principle and it was arranged on the low-frequency vibration transmission structure to form a low-frequency vibration absorber, ensuring the internal circulation and load-bearing performance of the original structure. Based on the low-frequency vibration absorber, the transmission of low-frequency vibration in the structure was effectively suppressed. We introduced the design of local resonance absorber and analyzed its low frequency vibration absorption characteristics and the influence of various geometric parameters on its performance. We also discussed the influence of arranging low frequency vibration absorber on the low frequency vibration absorption effect of the structure. By arranging three different vibration absorbers, we can suppress the new resonance peak that appears in the left and right resonance band when three same vibration absorbers are arranged. The comparison of their normalized vibration amplitudes shows that the arrangement of low frequency absorber has a good damping effect on the structure's low frequency vibration, among which the arrangement of three different low frequency absorber has the best damping effect.
2025,47(24): 62-66 收稿日期：2024-12-17
DOI：10.3404/j.issn.1672-7649.2025.24.010
分类号：U663.7
基金项目：江苏省研究生创新与实践计划项目（SJCX24_2458）
作者简介：赵兴华(1999-),男,硕士研究生,研究方向为船舶减振降噪技术及应用
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