Question

A beam is of thin tubular section with diameter D and wall thickness t . If V is the transverse shear force on beam section , then what is maximum shear stress developed in section?

• A. $\frac{2V}{\pi Dt}$
• B. $\frac{1.5V}{\pi Dt}$
• C. $\frac{4V}{3\pi Dt}$
• D. $\frac{V}{\pi Dt}$

Answer 1

The correct option is A $\frac{2V}{\pi Dt}$

$Areaofthintubularsection=\pi Dt$
${\tau }_{avg}=\frac{V}{\pi Dt}$
${\tau }_{max}=2{\tau }_{avg}=\frac{2V}{\pi Dt}$