Analysis of Dynamic Load of Spur Gears Considering the Gear Body Stiffness and Tooth Profile Modification

被引：0
|
作者：
Li C.-M. [1 ]
Wang C. [1 ]
Du M.-G. [1 ]
Zhao Z.-G. [2 ]
机构：
[1] Science and Technology on Vehicle Transmission Laboratory, China North Vehicle Research Institute, Beijing
[2] Project Management Office, Department of Army Equipment, Beijing
来源：
Du, Ming-Gang (mgdu@noveri.com.cn) | 2018年 / China Ordnance Industry Corporation卷 / 39期
关键词：
Dynamic load; Mesh stiffness; Profile modification; Spur gear;
D O I：
10.3969/j.issn.1000-1093.2018.06.026
中图分类号：
学科分类号：
摘要：
The influences of gear bodies, input speed, torque and tip relief on dynamic load of gear pair are studied to solve the low power density and high dynamic load of spur gear for high speed heavy-duty vehicles. A gear mesh stiffness model is established for spur gear, in which the gear body stiffness, profile modification and actual motion state of gear are considered. The gear mesh stiffness model is coupled into the 10 degrees-of-freedom lateral-torsional-rocking nonlinear dynamic model of a single stage gear system. The results show that the dynamic load of gear changes in the form of hump-like shape with the increase in speed, and the change trend of dynamic load remain almost the same at many rotating speeds. While the dynamic load of light-weight gear are much larger at various speeds, especially the amplitudes corresponding to the second- and sixth-order harmonics of mesh frequency of dynamic mesh force are obviously increased. With the increase in torque, the dynamic load of gear body is reduced in the form of a parabola, while the dynamic load of light-weight gear reaches to its local maximum. With the increase in tip relief amount, the dynamic load changes in the form of "U" type, and an optimal amount of tip relief exists to make the dynamic load reach to the minimum. While the amount of tip relief exceeds the optimal value, the dynamic load of light-weight gear changes more slightly. For short length of tip relief, the dynamic load appears in the form of "U" type. For long length of tip relief, the dynamic load factor is sharply reduced, which means that the long length of tip relief can more effectively reduce the dynamic load. © 2018, Editorial Board of Acta Armamentarii. All right reserved.
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页码：1239 / 1248
页数：9
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