弹性波在附加非线性自参数摆吸振杆中的传输和反射

IF 4.9 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration Pub Date : 2025-08-16 DOI:10.1016/j.jsv.2025.119404

Junqi Pan , Vladislav Sorokin , Lihua Tang , Andrew Hall , Ao Zhang

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引用次数: 0

摘要

自参数摆减振器是一种有效的减振装置，已广泛应用于各种工程应用中。然而，大多数关于摆式吸波器的研究都是基于离散系统的。本文研究了连续弹性杆结构的摆式减振器的动力学特性。分析了钟摆附着点处的波的透射和反射。首先，利用弹性波理论推导了带有摆式减振器的杆的运动控制方程。随后，采用变幅法对系统的一阶和高阶响应进行了分析，并对结果进行了数值验证。由于能量转移到摆的运动中，透射波可以大大减小。研究了系统参数对透射波衰减的影响，并比较了自参数摆减振器与传统线性质量-弹簧减振器减振器的减振效果。研究发现，与线性减振器相比，非线性摆振减振器具有更宽的带宽和更好的减振性能。

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Elastic wave transmission and reflection in a rod with an attached nonlinear autoparametric pendulum absorber

An autoparametric pendulum absorber is an effective device for vibration suppression and has been widely employed across various engineering applications. However, most studies on pendulum absorbers are based on discrete systems. This paper studies the dynamics of a pendulum absorber attached to a continuous elastic rod structure. Wave transmission and reflection at the pendulum attachment point is analysed. First, the governing equations of motions for the rod with an attached pendulum absorber are derived using the elastic wave theory. Subsequently, the first-order and higher-order responses of the system are analysed using the method of varying amplitudes and the results are validated numerically. Due to the energy transfer into the motion of the pendulum, it is shown that the transmitted wave can be reduced considerably. The system parameters affecting the reduction of the transmitted wave are investigated, and a comparison is made between the effectiveness of the autoparametric pendulum absorber and the conventional linear mass-spring-damper absorber. It was found that the nonlinear pendulum absorber can exhibit a wider bandwidth and superior vibration transmission reduction performance compared to the linear absorber.

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来源期刊

Journal of Sound and Vibration 工程技术-工程：机械

CiteScore

9.10

自引率

10.60%

发文量

551

审稿时长

69 days

期刊介绍： The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.