Finite Element Analysis and Tooth Profile Modification Study on Traction Gear of High Speed and Heavy Load Locomotive

Xiaochun Shi*, Weidong He
Mechanical Engineering Department, Dalian Jiaotong University, Dalian 116000, China

© 2015 Shi and He

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: ( This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Mechanical Engineering Department, Dalian Jiaotong University, Dalian 116000, China; Tel: 15841153528; E-mail:


Base on the characteristics of high-speed and heavy-load locomotive traction gear, a pre-grinding hob was designed which increased the thickness of the dangerous tooth root section as much as possible. The deformation and stress of the traction gears were calculated through the parameterized model established by finite element method. The tooth profile modification was implemented considering three locomotive working conditions including starting, sustain, and rapid operation. Finally, the related tests verified that the optimized transmission gear was in accordance the design requirements, the effect was good.

Keywords: Finite element analysis, gear tooth profile modification, locomotive traction gear, test.