Research on the influence of acoustic short circuit fault of air spring isolator on ship floating raft isolation system

IF 2.1 4区 工程技术 Advances in Mechanical Engineering Pub Date : 2024-09-09 DOI:10.1177/16878132241275602
Shuai Wang, Minyue Lu, Haitao Tan, Shiliang Jiang, Miao Zhang, Wei Liu, Jiachi Yao
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Abstract

Air spring isolator is the crucial component of ship floating raft isolation system. However, due to various factors such as manufacturing errors and installation conditions of air spring isolators, abnormal contacts cannot be avoided in the internal limiters of air spring isolator, resulting in the acoustic short circuit fault. This leads to a significant decrease in isolation effectiveness. To address this issue, experiments on the acoustic short circuit fault of air spring isolators are conducted, and the experimental results are analysed. Then the causes behind the phenomena and results of the acoustic short circuit experiments are further elucidated through finite element simulations and mathematical theory analysis. The research results indicate that the acoustic short circuit of air spring isolators affects the isolation effectiveness. The more severe the acoustic short circuit fault, the greater its impact on the isolation effectiveness, particularly in the low-frequency isolation component. This is because, during the acoustic short circuit of air spring isolators, the rubber part of the internal limiter comes into contact, causing an increase in the stiffness of the air spring support, thereby resulting in an increase in the modal frequency of the isolation device and consequently severely impacting the low-frequency isolation effectiveness.
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空气弹簧隔离器声短路故障对船舶浮筏隔离系统的影响研究
空气弹簧隔振器是船舶浮筏隔振系统的关键部件。然而,由于空气弹簧隔振器的制造误差和安装条件等各种因素,空气弹簧隔振器内部限位器无法避免非正常接触,从而导致声短路故障。这导致隔离效果大大降低。针对这一问题,对空气弹簧隔振器的声学短路故障进行了实验,并对实验结果进行了分析。然后,通过有限元模拟和数学理论分析,进一步阐明了声学短路实验现象和结果背后的原因。研究结果表明,空气弹簧隔振器的声学短路会影响隔振效果。声学短路故障越严重,对隔离效果的影响就越大,尤其是在低频隔离部分。这是因为在空气弹簧隔振器发生声学短路时,内部限幅器的橡胶部分会发生接触,导致空气弹簧支座的刚度增加,从而导致隔振装置的模态频率增加,进而严重影响低频隔振效果。
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来源期刊
Advances in Mechanical Engineering
Advances in Mechanical Engineering Engineering-Mechanical Engineering
自引率
4.80%
发文量
353
期刊介绍: Advances in Mechanical Engineering (AIME) is a JCR Ranked, peer-reviewed, open access journal which publishes a wide range of original research and review articles. The journal Editorial Board welcomes manuscripts in both fundamental and applied research areas, and encourages submissions which contribute novel and innovative insights to the field of mechanical engineering
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