混合润滑状态下旋转唇形密封的失效机制模型  

Failure Mechanism Model of Rotating Lip Seals under Mixed Lubrication

作　　者：王少萍[1,2] 张超 高宝旭[1] 刘迪 朱赟 WANG Shaoping;ZHANG Chao;GAO Baoxu;LIU Di;ZHU Yun(School of Automation Science and Electrical Engineering,Beihang University,Beijing 100191,China;Ningbo Institute of Technology,Beihang University,Ningbo Zhejiang 315800,China;Research Institute for Frontier Science,Beihang University,Beijing 100191,China;AECC Aero-Engine Control System Institute,Wuxi Jiangsu 214100,China)

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100191 [2]北京航空航天大学宁波创新研究院,浙江宁波315800 [3]北京航空航天大学前沿科学技术创新研究院,北京100191 [4]中国航发控制系统研究所,江苏无锡214100

出　　处：《润滑与密封》2023年第3期178-184,共7页Lubrication Engineering

基　　金：国家自然科学基金项目(51875015,52105045);国家重点研发计划项目(2019YFB2004504);宁波市重大科技任务攻关项目(2022Z005)。

摘　　要：为探究旋转唇形密封的失效机制,综合考虑流体、微凸体、弹性变形和温度对旋转唇形密封的影响,构建旋转唇形密封多场耦合模型,并基于多场耦合模型与关键点更新策略提出混合润滑状态下旋转唇形密封的磨损退化模型仿真方法。通过设计故障模拟试验,将试验结果与仿真结果进行对比,验证了仿真方法的有效性。结果表明:唇形密封件在初期磨损速率较大,之后趋于平缓;唇尖处接触压力最大,磨损速率最大。In order to investigate the failure mechanism of rotary lip seal,a multi-field coupling model of the rotary lip seal was constructed by comprehensively considering the effects of fluid,asperity,elastic deformation and temperature on the rotary lip seal.A point update strategy was proposed to simulate the wear degradation model of rotating lip seals under mixed lubrication conditions.A fault simulation test was designed,and the test results were compared with the simulation results to verify the effectiveness of the simulation method.The results show that the wear rate of the lip seal is larger at the initial stage,and then tends to be gentle.The contact pressure at the tip of the lip is the largest,and the wear rate is the largest.

关 键 词：混合润滑 旋转唇形密封 磨损退化 失效机制 多场耦合模型 

分 类 号：TH117.2[机械工程—机械设计及理论]