Calculation of friction power losses on gears based on time-varying contact load
XU Xiang1, YANG Ding-Fu2, SUO Wen-Chao3, LIU Gang1
1. Department of Automotive Engineering, Military Transportation Institute, Tianjin 300161, China;
2. Automotive Proving Ground, Nanjing 210028, China;
3. Department of Mechanical Engineering, Academy of Armored Forces Engineering, Beijing 100072, China
Abstract According to the theory of gear meshing, gear contact analysis and tribology theory, a general methodology was proposed for predicting the friction power losses of involute gears, which considered the gears whose transmission efficiency changed with gear surface contact load. This methodology integrated a relative sliding speed model, gear contact pressure model and a sliding friction coefficient model with a heat generation formulation to predict the friction power losses of involute gears. And the calculation software was developed. The influence of basic gear geometric parameters, operating conditions and lubricant temperature on friction power losses of involute gears were investigated. This methodology and conclusions may be helpful for the design of gearing and lubricating system．
XU Xiang, YANG Ding-Fu, SUO Wen-Chao, LIU Gang. Calculation of friction power losses on gears based on time-varying contact load. Chinese Journal of Engineering Design, 2010, 17(3): 224-228.
