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本文求解了纯滑动点接触热弹性流体动力润滑问题.分析中假设运动表面为光滑表面,静止表面在接触中心有1个垂直于卷吸速度方向的横向突起.将计算域划为乏油区、压力区和气穴区3个子区,乏油区和气穴区的压力计算算法一致,但是温度的计算方法不同.研究结果显示:在乏油工况下,油膜中压力和温度均在入口处新月形液面处开始建立,入口区乏油程度的增加会导致油膜中压力分布趋近于干接触状态,油膜中平均温度得以提高,最大压力和温度均出现在赫兹接触圆两侧的宏观马蹄形区域.同全膜润滑相比,油膜厚度被明显降低,并且随着乏油程度的增加,静止表面的突起逐渐被压平.
This paper solves the problem of thermohydrodynamic lubrication of purely sliding contact points. In the analysis, the moving surface is assumed to be a smooth surface, and the stationary surface has a transverse projection perpendicular to the entrainment velocity at the contact center. The calculation methods of pressure in the three sub-zones of pressure zone and cavitation zone are the same, but the calculating methods of temperature are different. The results show that under the condition of oil-lacking, the pressure and temperature in the oil film are all at the crescent The liquid level began to set up, and the increase of the lack of oil in the inlet zone led to the pressure distribution in the oil film approaching the dry contact state. The average temperature in the oil film was increased. The maximum pressure and temperature appeared in the macro-horseshoe region on both sides of the Hertzian contact circle Compared with full film lubrication, the film thickness is significantly reduced, and as the degree of starvation increases, the protrusions on the rest surface gradually flatten out.