Research on the Contact Dynamic Characteristics of Gears Coupled with Tooth Surface Micromorphology and Spalling Faults

Purpose Investigate the influence law of tooth surface micromorphology on time-varying meshing stiffness and fault gear dynamics. Methods The paper takes a spalling fault gear as the subject. Firstly, considering the impact of tooth surface micromorphology, the tooth surface is characterized using f...

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Bibliographic Details
Published inJournal of Vibration Engineering & Technologies Vol. 13; no. 5
Main Authors Wu, Shengli, Zhou, Yi, Xing, Wenting, Liu, Ying
Format Journal Article
LanguageEnglish
Published Singapore Springer Nature Singapore 01.06.2025
Subjects
Acoustics
Control
Dynamical Systems
Engineering
Engineering Acoustics
Original Paper
Vibration
Time-varying meshing stiffness
Time-varying tooth side clearance
Nonlinear dynamic model
Tooth surface roughness
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Summary:Purpose Investigate the influence law of tooth surface micromorphology on time-varying meshing stiffness and fault gear dynamics. Methods The paper takes a spalling fault gear as the subject. Firstly, considering the impact of tooth surface micromorphology, the tooth surface is characterized using fractal theory. A unique mapping relationship between tooth surface roughness and profile height is established. Next, based on the relative positions of the root circle and the base circle, as well as changes in the rough tooth surface profile height, an improved time-varying mesh stiffness model for spalling gears is established. A nonlinear dynamic model of gears that couples time-varying meshing stiffness with time-varying tooth side clearance is constructed. Results The experimental results show that considering the micromorphology of the tooth surface can simulate the time-varying meshing stiffness of gears more accurately and is more in line with the actual gear dynamics response law. Conclusion In this study, the relationship between tooth surface micromorphology and time-varying meshing stiffness as well as time-varying backlash was focused on. The influence law of tooth surface micromorphology on the dynamic model was revealed by using the gear dynamic response, and the rationality of establishing the dynamic model considering the tooth surface micromorphology was confirmed.
ISSN:2523-3920
2523-3939
DOI:10.1007/s42417-025-01885-8