Abstract
The effect of interference-fit on fretting fatigue crack initiation and K was studied numerically for available experimental results in a single pinned plate in Al-alloy 7075-T6. The role of interference ratio was investigated alongside friction coefficient through finite element. Cyclic stress distributions in the plate ligament and fretting stresses on the contact interface were evaluated using 3-D elastic-plastic finite element models. Additionally a 3-D elastic finite element model was utilized to discuss K of cracks emanating from interference fitted holes. Results demonstrate that fretting was the main reason for crack nucleation, and furthermore, the location was precisely predicted and fatigue life enhancement was explained.
| Original language | English |
|---|---|
| Pages (from-to) | 1233-1246 |
| Number of pages | 14 |
| Journal | Engineering Fracture Mechanics |
| Volume | 78 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Apr 2011 |
Keywords
- interference fit
- finite element
- fatigue life
- stress intensity factor
- fretting