Abstract
Profile of real round hole was assumed as regular polygon and the tolerance of roundness of real round hole was expressed with the difference of radii between inscribed circle and circumscribed circle for the regular polygon. Finite element method was used to analyze the stress field around the hole with different tolerance of roundness. On the basis of calculation results, fatigue life of the hole was predicted with given survivability and the effect of roundness of the hole on fatigue life was discussed. Numerical results showed that on this assumed condition, the smaller the tolerance of roundness is, the longer the fatigue life of hole. An approximate quadratic curve has been found to suit the relationship between the tolerances of roundness and their logarithmic fatigue lives with given survivability.
| Original language | English |
|---|---|
| Pages (from-to) | 1001-1004 |
| Number of pages | 4 |
| Journal | Jixie Qiangdu/Journal of Mechanical Strength |
| Volume | 29 |
| Issue number | 6 |
| State | Published - Dec 2007 |
Keywords
- Fatigue life prediction
- Finite element method
- Hole
- Roundness
- Survivability