How can we determine the maximum shear stress in the shaft?

14. A steel shaft is subjected to completely reversed bending moment of 800 N-m and a cyclic twisting moment of 500 N-m which varies over a range oft 40%. Determine the diameter of shaft if a reduction factor of 1.2 is applied to the variable component of bending stress and shearing stress. Assume (a) that the maximum bending and shearing stresses are in phase; (6) that the tensile yield point is the limiting stress for steady state component; (c) that the maximum shear strength theory can be applied; and (d) that the Goodman relation is valid. Take the following material properties: Yield strength = 500 MPa ; Ultimate strength = 800 MPa ; Endurance limit = ± 400 MPa. [Ans. 40 mm]

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A W310 x 52 beam is made with a material that has a maximum shearing stress of 90MPa. Determine the maximum shearing force. Show all work and don’t skip steps and show the cross-sectional diagram of W310 x 52 with all the numbers.

An SAE3140 OQT1300 steel  shaft with a circular cross section of  1.5 in  diamater is to be machined and subjected to a repeated bending stress. What is the type of stress factor for this design ?   Note : Your answer should be a numerical value only. Do not include an explanation.