付士博, 王业成, 蒲华燕, 等. 基于刚度补偿和涡流阻尼的舰载换能器隔振研究[J]. 中国舰船研究, 2024, 19(X): 1–10. doi: 10.19693/j.issn.1673-3185.03743
引用本文: 付士博, 王业成, 蒲华燕, 等. 基于刚度补偿和涡流阻尼的舰载换能器隔振研究[J]. 中国舰船研究, 2024, 19(X): 1–10. doi: 10.19693/j.issn.1673-3185.03743
shu
FU S B, WANG Y C, PU H Y, et al. Shipboard transducer vibration isolation based on stiffness compensation and eddy current damping[J]. Chinese Journal of Ship Research, 2024, 19(X): 1–10 (in Chinese). doi: 10.19693/j.issn.1673-3185.03743
Citation: FU S B, WANG Y C, PU H Y, et al. Shipboard transducer vibration isolation based on stiffness compensation and eddy current damping[J]. Chinese Journal of Ship Research, 2024, 19(X): 1–10 (in Chinese). doi: 10.19693/j.issn.1673-3185.03743
shu

基于刚度补偿和涡流阻尼的舰载换能器隔振研究

Shipboard transducer vibration isolation based on stiffness compensation and eddy current damping

    摘要
  • 摘要:
    目的 针对某舰载换能器多维转向工作时的大角度倾斜和小空间尺寸补偿抑制的问题，提出一种基于刚度补偿和涡流阻尼的隔振器。
    方法 首先，本文对刚度补偿和涡流阻尼的隔振器进行结构建模与设计，并建立隔振器的动力学建模，明确刚度与阻尼设计需求；然后，对菱形弹簧、膜片弹簧、涡流阻尼进行了机理研究和参数分析；最后，对刚度元件和阻尼元件进行了有限元仿真，对不同刚度和阻尼的隔振器进行了隔振性能仿真，并通过试验验证理论和仿真的准确性。
    结果 刚度补偿仿真和试验结果验证了刚度补偿机理，膜片弹簧的引入可以在保证整体轴向刚度需求的同时，有效地补偿整体的径向刚度; COMSOL仿真和涡流阻尼生成试验验证了涡流阻尼的生成机理和理论公式的准确性；隔振机理仿真和试验表明，降低刚度使隔振带宽分别改善了18.24%和36.69%，增大阻尼使峰值抑制分别改善了79.96%和89.94%。
    结论 所提出的隔振器构型和机理，可以解决大角度倾斜和空间尺寸小的问题，为舰载换能器的高性能隔振提供了一种可行的方案。

     

    Abstract:
    Objective This paper addresses problems of shipboard transducers such as large-angle tilt during multi-dimension steering and small-space compensation suppression by proposing an isolator based on stiffness compensation (SC) and eddy current damping (ECD).
    Method First, the structure of the isolator with SC and ECD is designed and dynamics modeling is carried out to clarify the requirements of the stiffness and damping design. The mechanism and parameters of the diamond-shaped spring, membrane and ECD are then analyzed. Finally, a finite element simulation is carried out, isolation performance with different parameters is simulated and the accuracy of the theory and simulation is verified by experiment.
    Results The SC mechanism is verified by stiffness simulation and experiment. It is found that the introduction of a membrane can effectively compensate for the overall radial stiffness while ensuring the necessary overall axial stiffness. The ECD mechanism and law are verified by COMSOL and experiment. The vibration simulation and experiment show that the isolation bandwidth is improved by 18.24% and 36.69% with reduced stiffness, while the peak is suppressed by 79.96% and 89.94% with increasing damping.
    Conclusion The proposed configuration and mechanism can solve the problem of large-angle tilt and small space, providing a feasible solution for the high-performance vibration isolation of shipboard transducers.

     

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