A Problem 1 Ans: (a) 16.7kN, (b) 111.3MPa, (c) 185.5MPa, -111.3MPa, (d) 148.4MPa, 259.7MPa,(e) 1.52, 1.73 A split-ring clamp-type shaft collar is shown in the figure. The collar is 50mm O.D. by 25mm I.D. by 12mm wide. The screw is designated as M6x1. The relation between the screw tightening torque T, the nominal screw diameter d, and the tension force Fi in the screw is T = 0.2 F; d. The shaft is sized to obtain a close running fit. The hoop tension force can be defined as F = w ri Pi. Next, suppose the collar is tightened by using a screw torque of 20N-m. The collar material is AISI 1035 steel heat-treated to a minimum tensile yield strength of 450MPa. (a) calculate the tension in the screw. (b) relate the tangential stress to the hoop tension; find internal pressure of the shaft on the ring. (c) find the tangential and radial stresses in the ring at the inner surface. (d) determine the maximum shear stress and the von Mises stress. (e) what are the factors of safety based on the maximum-shear-stress and the distortion-energy theories?