Stress Concentration
几何不连续处(孔、缺口)应力被放大。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Theoretical stress concentration factor | K_t = sigma_max / sigma_nom | Peterson RE, Stress Concentration Factors (3rd ed.), Wiley |
| Nominal stress | sigma_nom is computed on the net section with the notch removed | Peterson RE, Stress Concentration Factors (3rd ed.) |
| Geometric dependence | K_t depends on notch shape and relative size, e.g. fillet radius over plate width | Peterson RE, Stress Concentration Factors (3rd ed.) |
| Material sensitivity | Brittle materials are notch sensitive; ductile ones redistribute stress by local yielding | Peterson RE, Stress Concentration Factors (3rd ed.) |