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Stiffened Panel Euler Buckling

Euler critical stress σ_cr = π²·E·I / (L² · A) - the classical buckling limit for a pin-ended stiffened panel.

StructuralBuckling
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Formula, assumptions, and limits

σcr=π2EIL2A\sigma_\text{cr} = \frac{\pi^2 E I}{L^2 A}
SymbolMeaningUnit
EEYoung's modulus steel ≈ 206 GPaGPa
IISecond moment of areamm⁴ per mm width
AACross-section areamm² per mm width
LLPanel lengthmm

Source: IACS CSR-H Appendix 1.2

In short

Euler critical stress \u03c3_cr = \u03c0\u00b2\u00b7E\u00b7I / (L\u00b2 \u00b7 A) - the classical buckling limit for a pin-ended stiffened panel.

Learn the theory Hull Strength and Longitudinal Bending