Time-varying mesh stiffness model of a modified gear–rack drive with tooth friction and wear

被引：0
作者：
Changjiang Zhou
Xiaojie Dong
Hongbing Wang
Zhongming Liu
机构：
[1] Hunan University,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering
[2] Zhengzhou Research Institute of Mechanical Engineering Co.,undefined
[3] Ltd.,undefined
来源：
Journal of the Brazilian Society of Mechanical Sciences and Engineering | 2022年 / 44卷
关键词：
Time-varying mesh stiffness; Modification; Gear–rack drive; Friction; Tooth wear;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A time-varying mesh stiffness (TVMS) model of a modified gear–rack drive with tooth friction and wear is proposed in this work. The model considers the direction variation of the tooth friction and wear influence on single gear–rack tooth pair mesh stiffness and TVMS. The TVMS of the modified gear–rack drive is calculated using the generating method and the potential energy principle and verified using the finite element method based on an engineering application of the Three Gorges ship lift. Then, TVMS models of the gear–rack drive with tooth surface friction and wear are presented based on the engagement theory of gear–rack and Archard’s wear equation. Results show that the TVMS of the gear–rack drive decreases with the increase in the tooth friction and wear. The effects of the modification coefficient and the pressure angle on the TVMS of the gear–rack drive under constant center distance are further investigated. The results indicate that the bearing capacity and dynamic performance of the gear–rack drive can be enhanced by optimizing the modification coefficient and the pressure angle.
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