Numerical Analysis Of Line Contact Thermal EHL Based On Multilevel Technique

The designing requirement of the modern mechanical drive parts is higher and higher, its lubricated problem seems particularly important. Lubrication failure due to excess thin lubricant film and excess temperature of contact zone. This will improve lubricated performances through the improvement parameters and control lubricated condition in order to reduce frictional wear, to improve machine service life.The mathematics model of the paper base on considering the effect of temperature and characters of non-Newtonian fluid is established assumed whole lubricant film. The paper have dissertated the basic principle of method , and adopt the multilevel method to solve the lubricated equations . In the present numerical analysis, results have been obtained for the importanteffect of dimensionless load parameter W ,the speed parameter U , the material parameter G ,and slip on dimensionless amplitude of pressure spike, dimensionless minimum film thickness, and maximum lubricant temperature. The results shown that the amplitude of pressure spike and the maximum lubricant temperature increase as the load is increased, but the minimum film thickness decreased. The amplitude of pressure spike , the maximum lubricant temperature and the minimum film thickness increase as speed is increased, especially effect on minimum film thickness is significant. The material parameter has effect on all performance parameters, especially effect on maximum lubricant temperature. For the amplitude of pressure spike and minimum film thickness , slip has a significant effect on the maximum lubricant temperature.Because time restricts, the mathematics model of the paper based on the stable assumption and no roughness effect. Considering more factors on the research for thermal EHL is the direction further investigated to the paper.