Abstract:Most machine elements work under various environments such as higher and lower temperature in practice.In order to investigate the influence of the elements temperature on the lubricating performance of thermal elastohydodynamic lubrication (TEHL) with power-law non Newtonian model,a complete numerical solution for TEHL line contact with a power law non Newtonian model was obtained,the effects of elements temperature,the rheological exponent and the ambient viscosity of the lubricant on the lubricating performance were discussed,and the non-Newtonian and Newtonian solutions were compared.Results show that,similar to the Newtonian solution,the central film thickness is determined by the inlet effective viscosity which depends on the elements temperature no matter the rheological exponent is larger or smaller than one.As a result,the temperature effect of the elements can not be ignored for the TEHL with power-law non-Newtonian model.