Problem 1 A 60 in. B 34 kips (2) 34 kips 40 in. C 18 kips (3) 18 kips 30 in. D 25 kips A hollow steel [E = 30,000 ksi] tube (1) with an outside diameter of 2.75 in. and a wall thickness of 0.25 in. is fastened to a solid aluminum [E = 10,000 ksi] rod (2) that has a 2-in.-diameter and a solid 1.375-in.- diameter aluminum rod (3). The bar is loaded as shown above. 1 2 3 What is the change in length of steel tube (1) in inches? (Elongation is considered positive.) Type your answer..... What is the total change in length of the setup in inches? (Elongation is considered positive.) Type your answer... 11- What is the max normal stress in the setup in ksi? (Tension is considere positive.) Type your answer...

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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.