A thin-walled beam of hollow circular cross-section shown below is subject to both torsional and transverse loads. The outside diameter do= 100mm and wall thickness t= 5mm. At a specific cross-section, the bending moments are My = 600 N.m, Mz = 950 N.m and torsional moment is Mx=T=500 N.m. Calculate the principal stresses and the maximum shear stress at point A. Assume angle θ is 59 (degrees). Ignore transverse shear stress at point A. Use the closed thin-walled theory to solve for torsional shear stress.
A thin-walled beam of hollow circular cross-section shown below is subject to both torsional and transverse loads. The outside diameter do= 100mm and wall thickness t= 5mm. At a specific cross-section, the bending moments are My = 600 N.m, Mz = 950 N.m and torsional moment is Mx=T=500 N.m. Calculate the principal stresses and the maximum shear stress at point A. Assume angle θ is 59 (degrees). Ignore transverse shear stress at point A. Use the closed thin-walled theory to solve for torsional shear stress.
Use this method as closed thin walled theory;
Shear Stress: Tx =T/2Amt ; Am=Area contained within the median line
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