The compounded A-36 steel shaft (GA-36 steel = 75 GPa) is fixed to the wall at A and is subjected to the torques shown. If segment AEB is 2m while segment BDC is 1m; with torques D and E applied midway their segment's length: Determine the maximum shear stress in the shaft. a. 17.68 MPa b. 18.86 MPa c. 47.2 MPa d. 56.59 MPa Determine the relative angle of twist from end to end. a. 1.38° b. 2.16° C. 4.21 ° d. 6.58 ° 30 mm 250 Nm 60 mm 300 N-m 800 N-m

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Q: I only need 5

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A: for solution refer below images.

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Combined Loading

Any functioning component, such as machine parts, structural members, pressure vessels, and so on, are all under the influence of more than one force. When anybody is under the influence of more than one force such as shear forces, bending moments, axial forces, torsion, and so on, then such body is said to be under combined loading. A very practical example of combined loading is the crankshaft of an internal combustion engine (IC engine). The crankshaft of the IC engine is under high rpm, which is caused due to the torsional forces. Due to the presence of piston, counterbalances, and internal imbalances, the crankshaft experiences lateral forces and due to the rise in temperature, the crankshaft undergoes thermal expansion, which pulls the crankshaft along the axial direction and lateral direction. The presence of unbalanced loads along the periphery of the crankshaft also induces a bending moment.