一种含间隙铰接副的磨损计算及其寿命预测方法.pdfVIP

一种含间隙铰接副的磨损计算及寿命预测方法 于如飞，李 培，陈 渭 （西安交通大学现代设计及转子轴承系统教育部重点实验室，陕西西安 710049 ） 摘要：含间隙的铰接副普遍存在于各种机械系统中，其摩擦学行为(特别是磨损)对机构的动态性能，安全可靠性 和使用寿命方面有重要影响。本文针对工程机械中常见的作摆动运动的含间隙铰接副，应用Winkler 弹性基础模 型求解接触界面的压力分布，结合Archard 粘着磨损模型进行磨损深度的计算，并预测其使用寿命。通过借鉴关 节轴承的寿命计算方法，基于Archard 磨损计算方程，推导出适用于一般的含间隙铰接副的寿命计算式，计算实 例显示，该式子预测的使用寿命与数值模拟和实验结果具有良好的一致性，预期可将其广泛应用到实际的工程计 算中。 关键词：间隙铰接副；磨损；寿命预测 A Method for Wear Computation and Lifetime Prediction of Clearance Revolute Joints YU Rufei, LI Pei, CHEN Wei (Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi’an Jiaotong University, Xi’an, Shaanxi, 710049,China) Abstract:Clearance revolute joints are common in various mechanical systems. The tribological behaviors (especially wear) of clearance joints have significant influence on dynamic performance, reliability and useful lifetime. In this manuscript, the contact pressure distribution on the interface of the swaying clearance joints, which are commonly used in construction machinery, is solved using Winkler elastic foundation model. The obtained results together with Archard adhesive wear model are used to calculate the wearing depth and predict the lifetime of clearance joints. By referring to the lifetime calculation method of the spherical plain bearing, the formula for the lifetime calculation of general clearance joints is derived based on the Archard wear calculation equation. The calculational examples show that the useful lifetime of clearance joints predicted by this formula agrees well with the numerical simulation and experimental results. It is expected that the formula can be widely appli