Falcon company Nizwa is conducting a campus interview to you. You are asked to design the propeller shaft with the following specification. ) power tranmission = 270 kw (1) speed 65 rpm, () Maximum shear stress = 55 MPa (iv) diameter ratio = 1.78 (v) The maximum value of the twisting moment is 40% greater than its mean. Find, (i)The mean torque is (Unit is in Nm)=, (ii)The maximum torque is (Unit is in Nm)=. (iii) The outer diameter of the shaft (unit in mm) (iv) The inner diameter of the shaft (unit in mm)

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Q: Falcon company Nizwa is conducting a campus interview to you. You are asked to design the propeller…

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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.