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Elliptical hole in an infinite panel in tension

Elliptical hole in an infinite panel in tension σ σ σ max 2a 2 b
Elliptical hole in an infinite panel in tension

Values for calculation

$σ$ $\mathrm{MPa}$
$a$ $\mathrm{mm}$
$b$ $\mathrm{mm}$

Calculation

Stress concentration factor with the nominal stress based on gross area

$$K_{tg}=1+\cfrac{2\cdot a}{b}$$

Maximum normal stress

$$σ_{max}=K_{tg}\cdot σ$$