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。
Working environment of hydraulic equipment is complex and there are many unfavorable factors including vibration and impact.These factors coupled with uncertainty factors can easily cause improper adjustment of relief valve and hydraulic equipment failure.Here,aiming at this problem,considering effects of uncertainty factors,a reliability analysis model for anti-pressure fluctuation of direct-action type relief valve was proposed.The mathematical model of relief valve in vibration environment was established through appropriate simplification,and a functional function for failure of relief valve pressure fluctuation was constructed taking if pressure fluctuation amplitude exceeding the national standard value as a criterion.Considering the functional function being strongly nonlinear and implicit,the reliability analysis method for anti-pressure fluctuation of relief valve was established by combining MATLAB/Simulink simulation with the active learning Kriging model,and the failure probability of pressure fluctuation of relief valve in vibration environment was obtained.It was shown that the obtained results can not only provide new guidance for reliability evaluation and design optimization of relief valve,but also have a certain academic value for developing hydraulic related components reliability technology.
作者
查从燚
孙志礼
刘勤
潘陈蓉
ZHA Congyi;SUN Zhili;LIU Qin;PAN Chenrong(School of Mechanical Engineering and Automation,Northeastern University,Shenyang 110819,China;Ordnance Science and Research Academy of China,Beijing 100089,China;Department of General Education,Anhui Xinhua University,Hefei 230088,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2024年第11期66-71,共6页
Journal of Vibration and Shock
基金
装备预先研究项目(50902020101)
国防技术基础项目(JSZL2019208B001)。
作者简介
第一作者:查从燚,男,博士生,1993年生;通信作者:孙志礼,男,博士,教授,1957年生。
