准系统数值解法在混合热弹性流体动压润滑中的运用  

Accurate System Numerical Method For Solving the Mixed Thermal Elastic Hydrodynamic Lubrication

作　　者：王骁鹏[1] 王家序[1,2] 李文广[1] 何涛[2] 蒲伟[1] 

机构地区：[1]四川大学空天科学与工程学院,四川成都610065 [2]四川大学制造科学与工程学院,四川成都610065

出　　处：《四川大学学报（工程科学版）》2016年第4期204-210,共7页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学基金资助项目(51435001)

摘　　要：论文使用统一的点接触热弹流模型,研究准系统数值解法求解混合热弹性流体动力润滑完全数值解,使用离散卷积快速傅里叶变换求解弹性变形以及表面温升。分析了粗糙面接触下混合润滑的状态下油膜润滑和接触同时存在情况的热解,润滑状态从全膜润滑到混合润滑渐变过程中温度、膜厚、压力的变化状态,以及不同机械加工表面下模型的润滑状态模拟效果。结果显示该模型可得到良好的收敛解,能有效的模拟润滑状态渐变过程,对工程应用具有较强的实际意义。A thermal EHL model for point contact problems has been developed. The accurate system numerical method be used to solve the the unified model for mixed thermal elastic hydrodynamic lubrication（TEHL）. The discrete convolution and fast Fourier transform （DC-FFF） algorithm is employed to accelerate deformation and temperature calculations. The manuscript is dedicated to an analysis of a unified EHL model describing a thermal EHL point problem with the heat exchange with the contact solids. And discussed the ability of the model to transition from full film lubrication regime to mixed lubrication regimes and caculation in different mechanical surface. The result shows that the model was accuracy which can simulate the transition from mixed to full-film lubrication and had strong practical significance for engineering applications.

关 键 词：混合润滑 热弹性流体动力润滑 粗糙解 

分 类 号：TH117.2[机械工程—机械设计及理论]