Abstract
A crack initiation model was built for helical gear based on the risk accumulation theory considering influences of the tribo-dyanmic characteristics on the contact pressure under mixed EHL interface. In the modeling of short crack propagation, the non-linear and discontinuous characteristics were taken into account. Besides, a unified equation for long crack propagation covering various cracks with different scales was proposed to predict the whole fatigue life of gear pair. The results show that the contact pressure was significantly influenced by the dynamic meshing force and mixed lubricating performance. Several peaks of the effective shear stress appeared in subsurface due to the residual stress, which led to different contact failure forms after numbers of periodical meshing impacts.
| Original language | English |
|---|---|
| Pages (from-to) | 643-649 |
| Number of pages | 7 |
| Journal | Tribology |
| Volume | 36 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 Sep 2016 |
| Externally published | Yes |
Keywords
- Fatigue crack
- Helical gear
- Initiation life
- Propagation life
- Residual stress
- Tribo-dynamic
Fingerprint
Dive into the research topics of 'Whole fatigue life of helical gear covering crack initiation stage and propagation process'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver