Research on the contact dynamic characteristics of gears coupled with tooth surface micromorphology and spalling faults

Wu, Shengli, Zhou, Yi, Xing, Wenting and Liu, Ying ORCID: https://orcid.org/0000-0001-9319-5940 2025. Research on the contact dynamic characteristics of gears coupled with tooth surface micromorphology and spalling faults. Journal of vibration engineering & technologies. 13 (5) , 314. 10.1007/s42417-025-01885-8 Item availability restricted.

PDF - Accepted Post-Print Version Restricted to Repository staff only until 23 May 2026 due to copyright restrictions. Download (2MB)

Abstract

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.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Schools > Engineering
Publisher:	Springer
ISSN:	2523-3920
Funders:	National Natural Science Foundation of China
Date of First Compliant Deposit:	1 July 2025
Date of Acceptance:	9 May 2025
Last Modified:	03 Jul 2025 10:30
URI:	https://orca.cardiff.ac.uk/id/eprint/179433

Actions (repository staff only)

Edit Item