渐开线直齿轮牛顿流体非稳态热弹流润滑分析  

Transient thermo-elastic hydrodynamic lubrication analysis of an involute spur gear

作　　者：王优强[1] 黄丙习[1] 佟景伟[2] 杨沛然[1] 

机构地区：[1]青岛理工大学,山东青岛266033 [2]天津大学机械学院,天津300072

出　　处：《计算力学学报》2005年第5期568-573,共6页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(50175054);山东省自然科学基金重点项目(Z2003F01)资助

摘　　要：齿轮的非稳态弹流润滑问题由于啮合过程中滑滚比、曲率半径、卷吸速度和载荷变化范围较大,因此数值计算稳定性很差。而考虑热效应的齿轮非稳态弹流润滑问题,数值计算就更困难。本文应用多重网格技术,求得了齿轮牛顿流体润滑情况下,非稳态热弹流润滑问题的完全数值解。A meshing of a gear is a typical example where non-stationary conditions exit. Load, velocities, curvature of meshing point varies along the line of action at any time. A complete numerical solution for the transient thermo-elastic hydrodynamic lubrication problem of an involute spur gear is obtained by using simplified multigrid method. The gear teeth are assumed to be rigid. The load is first assumed to be carried by either two pairs of gear teeth or by only one pair. This transition from two to one pair and vice versa is modelled as a step variation of the load by simplifying the experimental load spectrum. The results show that thermal effects can strongly influence the approach and recess point film thickness, it also reveals that, the maximum pressure, the maximum friction coefficient and the highest film temperature all occur in the vicinity of pitch point. The minimum film thickness usually occurs at the approach point except reduction ratio equals to one. The film temperature and the friction coefficient influenced by the slide ratio and velocities are discussed.

关 键 词：渐开线直齿圆柱齿轮 非稳态热弹流 多重网格法 

分 类 号：TH132.41[机械工程—机械制造及自动化]