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.
- interference fit
- finite element
- fatigue life
- stress intensity factor
Mirzajanzadeh, M., Chakherlou, T. N., & Vogwell, J. (2011). The effect of interference-fit on fretting fatigue crack initiation and K of a single pinned plate in 7075 Al-alloy. Engineering Fracture Mechanics, 78(6), 1233-1246. https://doi.org/10.1016/j.engfracmech.2011.01.006