旋转轴唇形密封件磨损仿真分析  

Wear Simulation of Rotary Shaft Lip Seal

作　　者：张屾 吴振 尚闫 钱征华[1] 柯玉超 夏迎松 ZHANG Shen;WU Zhen;SHANG Yan;QIAN Zhenghua;KE Yuchao;XIA Yingsong(College of Aerospace Engineering,State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing Jiangsu 210016,China;Key Laboratory of High-Performance Rubber&Products of Anhui Province,Ningguo Anhui 242300,China)

机构地区：[1]南京航空航天大学航空学院,机械结构力学及控制国家重点实验室,江苏南京210016 [2]高性能橡胶材料及制品安徽省重点实验室,安徽宁国242300

出　　处：《润滑与密封》2021年第3期119-123,共5页Lubrication Engineering

摘　　要：使用有限元分析软件Abaqus对旋转轴唇形密封件的磨损进行模拟,通过UMESHMOTION用户子程序来实现密封件的动态磨损过程和控制局部区域的网格自适应划分,并基于磨损因子模型来控制橡胶的磨损速率,得到了密封件唇口轮廓形状以及接触压力随时间的演化规律。通过计算所得的主唇口磨损深度与实验值进行对比,验证了仿真方法的有效性。结果表明:密封件唇口磨损可分为初期的快速磨损阶段和之后的稳定磨损阶段;在磨损初期磨损速率较大,密封圈与轴之间的过盈量减小,最大接触压力先迅速减小,而后变化逐渐趋于缓慢;随着磨损时间的增加,唇口轮廓逐渐变得平缓,并且防尘唇的磨损程度要比主唇口更高,说明磨损主要发生在空气侧。The wear simulation of the rotary shaft lip seal was performed by using the FEA software Abaqus.The contour shape of the seal lip and the evolution law of contact pressure over time were obtained by using the subroutine Abaqus/UMESHMOTION to simulate the wear process and control the adaptive meshing in related regions,and by determining the wear rate based on the wear factor model.To validate the capability of the present method,the wear depth was analyzed and compared with the experiment results.It is found that the seal lip wear can be divided into the initial rapid wear stage and the subsequent stable wear stage.In the early stage of wear,the wear rate is large,the interference between the seal ring and the shaft decreases,while the maximum contact pressure decreases rapidly at first,and then changes slowly.With the increasing of the wear time,the contour of the lip gradually becomes smooth,and the wear degree of the dust lip is higher than that of the main lip,indicating that the wear mainly occurs on the air side.

关 键 词：旋转轴 唇形密封件 磨损 过盈量 

分 类 号：TB42[一般工业技术]