A simply supported box section beam that is 4m long is unifo

A simply supported box section beam that is 4m long, is uniformly loaded at 125 kN/m. The box section dimensions are; depth 125 mm, breadth 100 mm with a wall thickness of 5 mm. i. Draw the shear force diagram ii. Draw accurately, the shear stress distribution diagram for the most heavily loaded portion of the beam on the graph paper provided. iii. Show on your diagram the correct values for the maximum shear stress and the shear stresses at the connection between the top and the side walls of the beam. iv. What is the average shear stress across the beam?

Solution

Compare the two designs descirbed in table below when each is transmitting 1200lb.in of torque at its output shaft, which rotates at 20rpm. Compute the forces on the worm gear, the efficieny and the input power required