REN F, YANG H, XIAO Y Q,et al.Research on dynamic characteristics of a herringbone planetary gear transmission system with broken tooth-pitting compound fault[J].Journal of Henan Polytechnic University(Natural Science) ,2026,45(5):30-39.

doi:10.16186/j.cnki.1673-9787.2026010016

Received:2026/01/12

Revised:2026/03/28

Published:2026-07-24

Research on dynamic characteristics of a herringbone planetary gear transmission system with broken tooth-pitting compound fault

Ren Fei1, Yang He1, Xiao Yanqiu1, He Wenbin1, Ye Guoyong1, Zhang Dehai1, Du Yanlai1, Shi Lubing2, Yan Shidang2, Liu Xuan1

1.College of Mechanical and Electrical Engineering， Zhengzhou University of Light Industry， Zhengzhou  450002， Henan， China；2.ZRIME Gearing Technology Co.， Ltd.， Zhengzhou  450001， Henan， China

Abstract: Objectives The influence of compound faults of broken tooth-pitting at different severity levels on the contact force characteristics， vibration response features， and dynamic load coefficients of a herringbone planetary gear transmission system was investigated.  Methods Based on KISSsoft， SolidWorks， and ADAMS， accurate virtual prototype models of a double-ring herringbone planetary gear transmission system under healthy condition and with different severity levels of broken tooth-pitting compound faults are established. The GSTIFF algorithm is employed to obtain the system contact forces and angular accelerations under healthy and various compound fault conditions， from which the dynamic load coefficients are calculated. The contact force characteristics and angular acceleration responses of the internal and external meshing pairs in the time and frequency domains are analyzed， and the relationship between fault severity and the system dynamic load coefficient is investigated.  Results The results show that under the healthy condition， the error between the theoretical meshing frequency and the fundamental frequency is less than 1%， validating the accuracy of the virtual prototype model. When a broken tooth-pitting compound fault occurs， the fluctuation amplitudes of the contact force and angular acceleration in the time domain increase significantly， and distinct sidebands appear in the frequency domain. The dynamic load coefficients of the internal and external meshing pairs in the healthy system are 1.005 and 1.004， respectively， indicating stable transmission performance. Conclusions As the severity of the broken tooth-pitting compound fault increases， the time-domain curves of contact force and angular acceleration exhibit multiple peaks， the sidebands in the frequency domain become denser， and the dynamic load coefficients of the internal and external meshing pairs continue to increase. Compared with mild and moderate compound faults， severe broken tooth-pitting faults have the most significant impact on the transmission performance of the system. The findings provide a theoretical basis for accurate diagnosis and dynamic simulation of compound faults in planetary gear transmission systems.

Key words:broken tooth-pitting compound fault;fault severity;double-ring herringbone planetary gear;virtual prototype model;contact force;dynamic load coefficient;