直动型溢流阀的流固耦合建模与动态特性研究

doi:10.3901/JME.2021.23.137

机械工程学报 ›› 2021, Vol. 57 ›› Issue (23): 137-148.doi: 10.3901/JME.2021.23.137

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直动型溢流阀的流固耦合建模与动态特性研究

廖茂林¹, 宋文², 王晓勇¹, 辛岩莉¹, 郜志英¹

1. 北京科技大学机械工程学院北京 100083;
2. 中船重工第七〇五研究所西安 710000

收稿日期:2020-10-10 修回日期:2021-05-07 出版日期:2021-12-05 发布日期:2022-02-28
作者简介:廖茂林,男,1986年出生,博士后,副教授。主要研究方向为机械振动、非线性动力学。E-mail:liaomaolin@ustb.edu.cn
基金资助:
国家自然科学基金（51904018）和水下信息与控制重点实验室基金资助项目（705JCH2020-2.1）资助项目。

Fluid-Structure Coupling Modelling and Dynamic Analysis of a Direct-Acting Relief Valve

LIAO Maolin¹, SONG Wen², WANG Xiaoyong¹, XIN Yanli¹, GAO Zhiying¹

1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083;
2. China Shipbuilding Industry Corporation 705 Research Institute, Xi'an 710075

Received:2020-10-10 Revised:2021-05-07 Online:2021-12-05 Published:2022-02-28

摘要/Abstract

摘要： 直动型溢流阀被广泛用于水下动力设备的供能调节，但下潜水深的变化时常使得其动态稳定性无法保证，以至于在到达一定水深之后，溢流阀阀口会出现异常的压力波动现象，影响其正常的工作状态。为此，开展流固耦合分析，建立了直动型溢流阀的两自由度动力学模型。通过无因次化后模型的求解，实现了对试验测试信号中振动深度的准确复现，并进一步分析了溢流阀阀芯的轴向和纵向振动状态随水深的变化，以及在部分深度下阀芯振动的多稳态共存现象。所建立的动力学模型中的非线性因素为试验测试信号中发现的压力波动特征提供了理论解释，从而为通过对溢流阀的优化设计来解决溢流阀的大振幅脉冲振动提供了模型支撑。

关键词: 溢流阀, 流固耦合, 动力学建模, 动态响应分析

Abstract: Direct-acting relief valve is widely applied in the energy supply of underwater power equipment; however, its dynamic stability is generally challenged by the change of the water depth, namely the hydraulic pressure condition. Sudden pressure jumps are observed at valve port in certain depths, which brings harmful influences on its normal working condition. A two degree-of-freedom dynamic model for a direct-acting relief valve is developed based on fluid-structure coupling analysis, and then its corresponding nondimensional mathematical model is solved numerically. The results of numerical simulations are in agreements with the experimental measurements for the water depths of impulse vibrations of the relief valve. Moreover, the variations of both the axial and longitudinal vibrations of the valve element as the water depth, and the coexistence of its multi-stability conditions in certain depths are analysed. The nonlinear characteristics of the developed model provide a theoretical explanation for the pressure fluctuation characteristics explored in the experimental measurements, which further supports the system optimization to avoid large amplitude vibrations of the relief valve.

Key words: relief valve, fluid-structure coupling, dynamic modelling, dynamic analysis

中图分类号:

TG156

廖茂林, 宋文, 王晓勇, 辛岩莉, 郜志英. 直动型溢流阀的流固耦合建模与动态特性研究[J]. 机械工程学报, 2021, 57(23): 137-148.

LIAO Maolin, SONG Wen, WANG Xiaoyong, XIN Yanli, GAO Zhiying. Fluid-Structure Coupling Modelling and Dynamic Analysis of a Direct-Acting Relief Valve[J]. Journal of Mechanical Engineering, 2021, 57(23): 137-148.

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直动型溢流阀的流固耦合建模与动态特性研究

Fluid-Structure Coupling Modelling and Dynamic Analysis of a Direct-Acting Relief Valve

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