Analysis of crack propagation and life estimation of spiral bevel gears with root cracks

In order to study the effect of tooth root cracks on the fatigue life of spiral bevel gears, a certain spiral bevel gear was taken as the research object, and the mechanism of tooth root fatigue cracks was analyzed based on crack propagation theory; By combining the extended finite element method an...

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Bibliographic Details
Published in:Journal of physics. Conference series 2024-06, Vol.2787 (1), p.12032
Main Authors: Yang, Hang, Zhang, Weiqing, Wang, Ning, Tan, Rulong
Format: Article
Language:English
Subjects:
Crack initiation
Crack propagation
Fatigue cracks
Fatigue failure
Fatigue life
Finite element method
Fracture surfaces
Gear teeth
Spiral bevel gears
Surface cracks
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Summary:In order to study the effect of tooth root cracks on the fatigue life of spiral bevel gears, a certain spiral bevel gear was taken as the research object, and the mechanism of tooth root fatigue cracks was analyzed based on crack propagation theory; By combining the extended finite element method and the level set method, an initial crack propagation finite element model is established. The crack location of the gear teeth is determined through static analysis of the gear pair, and the influence of alternating loads on the initiation and propagation life of tooth surface cracks is studied. The analysis results indicate that the number of load cycles required for each crack propagation after its first occurrence gradually decreases; The crack propagation path of gear cracks under fatigue load is consistent with the actual tooth surface fracture surface; Realize life estimation from crack propagation to fracture failure.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2787/1/012032