Consider a machine element as shown in the figure. The stress element at a critical point on this element is shown. Determine the smallest yield stress for a steel that can be selected for the member, based on the maximum-shear-stress theory. What result you expect if maximum distortion energy theory is used. 80ksi 25 ksi Activate Wing Go to Settings to Consider a carbon steel bar ( SAE 1045) with a circular cross- sectional area, having a yield stress of 150 ksi. Let the bar is subjected to a torque (in kip. in.), and a bending moment M (in kip in.), Determine the required diameter of the bar according to the maximum-distortion-energy theory. Use a factor of safety of 2 with respect to yielding. Torque (in kip. in.) = LAST Two digits of your CMS # bending moment M (in kip in.) = Last two digits of your PA/NS # Activate Window A cylindrical pressure vessel is constructed from a long, narrow steel plate by wrapping the plate around a mandrel and then welding along the edges of the plate to make a helical joint (Fig). The helical weld makes an angle a 55 with the longitudinal axis. The vessel has inner radius r = 1.8 m and wall thickness t = 20 mm. The material is steel with modulus E = 200 GPa and Poisson's ratio n = 0.30. The internal pressure p is 800 kPa. Calculate the following quantities for the cylindrical part of the vessel: (a) the circumferential and longitudinal stresses l and 02, respectively; (b) (b) the maximum in-plane and out-of-plane shear stresses; A B 8=35 Activate Windows Go to Settings to activat