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Plate Joint - Fatigue Life (Miner)

Fatigue life of a welded detail using Miner's rule over a single stress range and SN curve - classical hull-detail fatigue calculation.

FatigueMinerSN curve
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Formula, assumptions, and limits

N=AΔσm,T=NnyrN = \frac{A}{\Delta\sigma^m}, \quad T = \frac{N}{n_{yr}}
SymbolMeaningUnit
Δσ\Delta\sigmaHot-spot stress rangeN/mm²
AA, mmSN curve parameters
nyrn_{yr}Cycles per year

Source: DNV RP-C203 Fatigue Design

In short

Fatigue life of a welded detail using Miner's rule over a single stress range and SN curve - classical hull-detail fatigue calculation.

Learn the theory Hull Strength and Longitudinal Bending