磨合过程对流体润滑性能影响的数值分析数学模型

建立了非牛顿流体热弹流润滑数学模型，对重载条件下磨合过程进行数值分析，在考虑具有粘塑性本构的非牛顿流体时，采用了高效粘度法对建立的方程进行了解算。结果表明，热解的摩擦系数明显低于等温解的摩擦系数，当进一步考虑流体的非牛顿效应时，不仅温升的结果更为符合实际，摩擦系数也更接近试验结果。

Numerical Analysis for Influences of Running-in Process on the Lubrication Properties MathematicalModel

Anon-Newtonian thermal elastohydrodynamic lubric ation model is set up to analyze running-in process under heavy load.The equiv alent viscosity method is used to account for the visco-plastic characteristics of non-Newtonian fluid. Thenumerical solutions are presented. The results sho w that the friction coefficient of thermal EHL solutions is much lower thanthat of the isothermal one. However, the temperature rise of thermal EHL solution u nder heavy load is irrationally high. Whenthe rheological effect of non-Newton ian fluid is considered, the temperature rise drops to reasonable level and the frictioncoefficient is relatively comparable to the tested counterpart.