振动环境下直动式溢流阀的防压力波动可靠性分析

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摘要液压装备工作环境复杂，其中不乏存在振动、冲击等不利因素，这些因素与不确定性因素耦合极易引起溢流阀调定不当从而造成液压装备失效。针对此问题，考虑不确定性因素的影响，提出了一种直动式溢流阀防压力波动可靠性分析模型。通过适当简化建立了溢流阀在振动环境下的数学模型，并以调定压力波动幅值是否超过国标规定值为判别条件，构建了溢流阀压力波动失效的功能函数。考虑到功能函数为强非线性隐式，将MATLAB/Simulink仿真与主动学习Kriging模型相结合建立溢流阀防压力波动可靠性分析方法,并得到了振动环境下溢流阀压力波动失效概率。所得结果不仅为溢流阀的可靠性评估和设计优化提供了新的指导，还对发展液压相关元件可靠性技术具有一定的学术价值。

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	查从燚1
	孙志礼1
	刘勤2
	潘陈蓉3

关键词 ：振动, 溢流阀, 防压力波动可靠性, Kriging

Abstract：Hydraulic equipment typically operates in complex working conditions that frequently involve adverse factors, including vibrations and impacts. The coupling of unfavorable and uncertain factors can easily result in misadjustment of the relief valve and ultimately lead to equipment failure. To solve this problem, a reliability analysis model for anti-pressure fluctuation of a direct-operated relief valve is proposed, which considers parameter uncertainties. A mathematical model of the relief valve in a vibration environment was established through appropriate simplification. Furthermore, a performance function for pressure fluctuation failure of the relief valve was constructed based on whether the pressure fluctuation amplitude exceeds the specified value in the national standard. As the performance function is strongly nonlinear and implicit, a reliability analysis method for anti-pressure fluctuation in the relief valve is established by combining MATLAB/Simulink simulation with an active learning Kriging model. The failure probability was subsequently computed. The obtained results not only provide new guidance for the reliability assessment and design optimization of the relief valve but also hold certain academic value for the development of reliability techniques in hydraulic-related components.

Key words： vibration relief valve anti-pressure fluctuation reliability Kriging

收稿日期: 2023-05-15 出版日期: 2024-06-15

引用本文:

查从燚1，孙志礼1，刘勤2，潘陈蓉3. 振动环境下直动式溢流阀的防压力波动可靠性分析[J]. 振动与冲击, 2024, 43(11): 66-71.
ZHA Congyi1, SUN Zhili1, LIU Qin2, PAN Chenrong3. Reliability analysis of anti-pressure fluctuation for direct action type relief valve in vibration environment. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(11): 66-71.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2024/V43/I11/66

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