Fatigue life of a welded detail using Miner’s rule over a single stress range and SN curve - classical hull-detail fatigue calculation.
Formula
$$ N = \frac{A}{\Delta\sigma^m}, \quad T = \frac{N}{n_{yr}} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $\Delta\sigma$ | Hot-spot stress range | N/mm² | DNV RP-C203 |
| $A$, $m$ | SN curve parameters | - | DNV RP-C203 Table 3 |
| $n_{yr}$ | Cycles per year | - | spectral analysis |
Sources
- DNV RP-C203 Fatigue Design.