摘要
基于油封的有限元和数值计算模型,分析油封的设计参数对其静态和动态密封可靠性的影响规律。将油封的初始安装过盈量、油侧唇角、空气侧唇角、腰厚、腰长、理论接触宽度、卡紧弹簧的弹性模量、油封主体橡胶的硬度8个设计参数的标准化数据作为输入向量,将油封唇口最大接触压力、泵吸率和摩擦扭矩的标准化数据作为输出向量,建立响应面模型,以输出向量方差得到各设计因素的似然函数值作为评判指标,确定各设计参数对油封密封可靠性的影响程度。结果表明:橡胶硬度、理论接触宽度、弹簧弹性模量、过盈量、腰长对油封动态密封可靠性的影响较显著,油封唇口最大接触压力对弹簧弹性模量、理论接触宽度、橡胶硬度、腰厚、油侧唇角较敏感。综合考虑旋转轴唇形油封的静态和动态可靠性,得到影响其可靠性的关键设计因素为理论接触宽度、弹簧弹性模量和橡胶硬度。
Based on the finite element and numerical calculation models of oil seals,the influence of design parameters of oil seals on the static and dynamic sealing reliability was analyzed.Standardized data of 8 design parameters,including initial installation interference,oil side lip angle,air side lip angle,waist thickness,waist length,theoretical contact width,elastic modulus of clamping spring,and hardness of the main rubber of the oil seal,were used as input vectors,and standardized data of maximum contact pressure,pump suction rate,and friction torque of the oil seal lip were used as output vectors to establish a response surface model.The likelihood function value of each design factor obtained from the variance of output vector was used as the evaluation index to determine the influence of each design parameter on the reliability of oil seal.The results show that rubber hardness,theoretical contact width,spring elastic modulus,interference amount,and waist length have a significant impact on the reliability of oil seal dynamic sealing.The maximum contact pressure of the oil seal lip is more sensitive to spring elastic modulus,theoretical contact width,rubber hardness,waist thickness,and oil side lip angle.Taking into account the static and dynamic reliability of the rotating shaft lip shaped oil seal,the key design factors affecting its reliability are the theoretical contact width,spring elastic modulus,and rubber hardness.
作者
张付英
韩兆
杨朋伟
吴继豪
ZHANG Fuying;HAN Zhao;YANG Pengwei;WU Jihao(College of Mechanical Engineering,Tianjin University of Science&Technology,Tianjin 300222,China;Key Laboratory of Integrated Design and On Line Monitoring of Light Industry and Food Engineering Machinery and Equipment in Tianjin,Tianjin 300222,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2024年第9期156-162,共7页
Lubrication Engineering
基金
科技部创新方法工作专项项目(2019IM020300)。
关键词
旋转轴唇形密封
密封可靠性
静态和动态密封
响应面法
似然函数值
lip-shaped oil seal of rotary shaft
sealing reliability
static and dynamic sealing
response surface method
likelihood function value
