Sub-surface Fatigue Crack Growth at Alumina Inclusions in AISI 52100 Roller Bearings
| Autor: | Michele Cerullo |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Bearing (mechanical)
Materials science Metallurgy General Medicine Paris' law Finite element method law.invention Rolling contact fatigue Stress (mechanics) AISI 52100 chemistry.chemical_compound chemistry Cohesive Element law Wind Turbine Inclusions Boundary value problem Inclusion (mineral) Non-metallic inclusions Engineering(all) Plane stress |
| Zdroj: | Procedia Engineering. 74:333-338 |
| ISSN: | 1877-7058 |
| DOI: | 10.1016/j.proeng.2014.06.274 |
| Popis: | Sub-surface fatigue crack growth at non metallic inclusions is studied in AISI 52100 bearing steel under typical rolling contact loads. A first 2D plane strain finite element analysis is carried out to compute the stress history in the innner race at a characteristic depth, where the Dang Van damage factor is highest. Subsequently the stress history is imposed as boundary conditions in a periodic unit cell model, where an alumina inclusion is embedded in a AISI 52100 matrix. Cracks are assumed to grow radially from the inclusion under cyclic loading. The growth is predicted by means of irreversible fatigue cohesive elements. Different orientations of the cracks and different matrix-inclusion bonding conditions are analyzed and compared. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|