Torsion Constant for Rectangle Cross-section

on . Posted in Classical Mechanics

   

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Torsion Constant for Rectangle Cross-section formula

\( J \;=\;  a \cdot b^3 \cdot \left[ \dfrac{1}{3} - 0.21 \cdot \dfrac{b}{a} \cdot \left(1- \dfrac{b^4 }{ 12 \cdot a^4 } \; \right)  \right]  \) 
Symbol English Metric
\( J \)  (Greek symbol alpha) = torsion constant \(in^4\) \(mm^4\)
\( a \) = length of long edge of an rectangle \(in\) \(mm\)
\( b \) = length of short edge of an rectangle \(in\) \(mm\)

 

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Tags: Strain and Stress Torsion