Torsion Constant for Rectangle Cross-section

on 24 November 2019. Posted in Classical Mechanics

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Torsion Constant for Rectangle Cross-section formula
\( J = a\;b^3 \left[ \frac{1}{3} - 0.21 \; \frac{b}{a} \; \left(1- (b^4\;/\;12\;a^4)\; \right) \right] \)
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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