Calculation and Comparative Analysis of Helical Gear Tooth Contact Dynamic Stress
JIA Hai-tao, WANG Feng, FANG Zong-de
1. No. 703 Research Institute, China Shipbuilding Industry Corporation, Harbin 150036, China, 2. School of Mechatronics, Northwestern Polytechnical University, Xi’an 710072, China
Abstract：In order to effectively calculate the helical gear tooth surface contact stress under dynamic conditions, six degrees of freedom helical gears meshing type bending-torsion-axis coupling vibration model is established by considering time-varying mesh stiffness excitation and meshing impact excitation under the rolling bearing supported, and meshing dynamic load is calculated. Helical gear tooth contact dynamic stress calculation method is put forward considering the proposed dynamic load tooth, teeth and tooth surface load distribution, and the Hertz contact theory, but also the dynamics dynamic stress of tooth contact is get by use of Abaqus finite element analysis software. Dynamic contact stress under three load torques of 800N•m, 1200N•m and 1600N•m is calculated out, the results show that the maximum contact stress between loaded tooth contact analysis method and AGMA standard method is have the maximum difference of 11.6%, and the maximum difference between Abaqus finite element method and AGMA is 13.8%. The two methods of tooth contact dynamic stress curve maximum deviation of 11.3%, it is shown that the method proposed in this paper is reasonable and effective.
2014, Vol. 33 
