Analysis of coupling dynamic characteristics of the high contact ratio spur gear system
HAN Peng
CHEN Songlin
LI Fang
ZHANG Chongyang
SHU Ruizhi
WEI Jing
Abstract：[Objective]The high contact ratio(HCR)gear pair basically does not need to increase the weight of the gear de-vice to achieve an increase in carrying capacity and a smoother transmission.Therefore,the use of HCR gears instead of ordi-nary gears in the transmission system was proposed to improve the load carrying capacity of the gear system and reduce the vi-bration of the system.[Methods]Based on the potential energy method,the time-varying meshing stiffness calculation model of HCR gear was established,and the time-varying meshing stiffness and stiffness fluctuation between HCR gear and ordinary con-tact ratio gear were compared.The dynamic model of HCR gear system,including shaft segment,spur gear pair and bearing,was established by the finite element method.The dynamic characteristics of the HCR gear system and ordinary contact ratio gear system were compared in different speed conditions.[Results]The results show that compared with the ordinary contact ra-tio gear,the comprehensive meshing stiffness of HCR gear is significantly increased,and the stiffness fluctuation is significantly decreased.The root mean square and peak-to-peak values of dynamic meshing force and vibration acceleration of HCR gear sys-tem decrease significantly under different speed conditions.
Keywords：High contact ratioTime-varying meshing stiffnessDynamic characteristics
Publication Date：2025-07-31
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：9( 1-9 )