Hoop Stress Buckling Load (External Pressure or Vacuum)

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axial hoop radial stress 1

Hoop Stress Buckling Load (External Pressure or Vacuum) Formula

\( \Delta p_{max} = \frac{ 2 \; \lambda }{ 3 }  \; \left( \frac{ t }{ D } \right)^3 \)
 Symbol English Metric
\( \Delta p \) = change in pressure \(\frac{lbf}{in^2}\) \(Pa\)
\( \lambda \)  (Greek symbol lambda) = elastic modulus \(\frac{lbf}{in^2}\) \(Pa\)
\( D \) = outside diameter \( in \) \( mm \)
\( t \)  (Greek symbol sigma) = wall thickness \( in \) \( mm \)

 

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Tags: Hoop Stress