针对用吸振器控制管路系统振动线谱传递的问题，本文用欧拉梁振动理论建立横向激励下管路—吸振器的连续体振动模型，用有限元方法验证模型的准确性，研究激励及吸振器安装位置、控制对象和支撑刚度等对控制效果的影响规律。研究表明，激励及吸振器安装位置对吸振器抑振效果影响很大，以管路系统模态频率或激励频率为控制对象时存在较大差异，管路的支撑刚度只在一定范围内对系统一阶固有频率有重要影响。
To control vibration transmission across pipes with dynamic vibration absorber, a continuous pipe-DVA vibration model under transverse excitation is established using Euler beam. The model is testified by finite element methods. Influence of relative location of excitation and DVA, control object and stiffness of support, is investigated. Results show that relative location of excitation and DVA has a great impact on DVA’s effect, modal-objected control differs from excitation-objected control. Stiffness of pipe support can affect pipe’s first modal frequency within a specific range.
2020,42(8): 48-54 收稿日期：2019-10-19
DOI：10.3404/j.issn.1672-7649.2020.08.009
分类号：TB123
作者简介：姚伍平(1988-),男,工程师,主要从事舰船管路系统减振降噪研究
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