可调频超结构充液管道的振动抑制

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (13) : 180-189.

论文

可调频超结构充液管道的振动抑制

王可心1，2，杨智春1，赵天1，徐艳龙1，田玮1

作者信息 +

Vibration suppression of tunable frequency metastructure fluid-filled pipeline

WANG Kexin1,2, YANG Zhichun1, ZHAO Tian1, XU Yanlong1, TIAN Wei1

Author information +

文章历史 +

摘要

提出了一种附加可调频局域共振单元的超结构充液管道，通过调整局域共振单元的质量块在弹簧片上的安装位置，实现局域共振单元固有频率的可调性，进而实现充液管道在多个频率下的振动抑制。首先建立了附加可调频局域共振单元的超结构充液管道的结构动力学模型，采用伽辽金法推导了超结构充液管道的运动方程，然后利用模态分析方法建立了多频带隙的解析表达式。建立了相应的有限元模型，对其多频减振特性进行数值仿真，并开展了相应的验证实验。计算和实验结果验证了所提出的超结构充液管道存在多个带隙，在带隙范围内充液管道的弯曲振动被显著抑制。研究工作表明，使用可调频局域共振单元能够有效抑制充液管道多个频率下的振动，为其在多目标频段下充液管道的减振应用提供参考。

Abstract

A metastructure fluid-filled pipeline with tunable frequency local resonance units is proposed. By adjusting the installation position of mass blocks on the spring blades, the natural frequency of the local resonance units can be adjusted, thereby realizing vibration suppression of the fluid-filled pipeline at multiple frequencies. Firstly, the structural dynamics model of the metastructure fluid-filled pipeline with tunable frequency local resonance units is established, and the motion equation of the metastructure fluid-filled pipeline is derived using the Galerkin method. Then, the analytical expression for multiple bandgaps is obtained using modal analysis methods. A corresponding finite element model is established to numerically simulate the multi-frequency vibration reduction characteristics, followed by validation experiments. The computational and experimental results confirm the existence of multiple bandgaps in the proposed metastructure fluid-filled pipeline, leading to significant suppression of bending vibration within the bandgap range. This research demonstrates that the use of tunable frequency local resonance units can effectively suppress vibration of the fluid-filled pipeline at multiple frequencies, providing reference for vibration reduction applications in the pipeline across multiple target frequency ranges.

导出引用

王可心1，2，杨智春1，赵天1，徐艳龙1，田玮1. 可调频超结构充液管道的振动抑制[J]. 振动与冲击, 2024, 43(13): 180-189

WANG Kexin1,2, YANG Zhichun1, ZHAO Tian1, XU Yanlong1, TIAN Wei1. Vibration suppression of tunable frequency metastructure fluid-filled pipeline[J]. Journal of Vibration and Shock, 2024, 43(13): 180-189

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