PSAD Refresher Series

Currently Playing: PSAD Refresher 61: Torsion on Solid and Hollow Shaft with Non-Composite Action

SITUATION: A circular tube of outer diameter d3 = 70 mm and inner diameter d2 = 60 mm is welded at the right-hand end to a fixed plate and at the left-hand end to a rigid end plate. A solid circular bar of diameter d1 = 40 mm is inside of, and concentric with, the tube. The bar passes through a hole in the fixed plate and is welded to the rigid end plate. The bar is 1.0 m long, and the tube is half as long as the bar. A torque T = 1000 N-m acts at end A of the bar. Also, both the bar and tube are made of an aluminum alloy with shear modulus of elasticity G = 27 GPa. 1. Determine the maximum shear stresses (MPa) in the bar. A. 79.6 C. 83.1 B. 32.3 D. 66.5 2. Determine the maximum shear stresses (MPa) in the tube. A. 83.1 C. 32.3 B. 79.6 D. 66.5 3. Determine the angle of twist (in degrees) at end A of the bar. A. 9.34 C. 6.92 B. 7.23 D. 8.88 Thanks for watching! Comment for questions and suggestions for future lecture in this series. Subscribe and hit the bell button to be notified for future posts. #civilengineering #boardexam #engineering #structuralanalysis #structuralengineering #CivilEngineeringLicensureExamination #PRC #PSAD #theoryofstructures #cele #strengthofmaterials #mechanicsofmaterials #staticsofrigidbodies #steeldesign #compressionmember #trusses #friction #refresher #PSADRefresher #SHET