The bars of the truss each have a cross sectional area of 1.25 in^2.  If the maximum average normal stress in any bar is not to exceed 20ksi, determine the maximum magnitude P of the loads that can be applied to the truss.

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Q: Q5: Determine the average normal stress developed in rod AB if the load has a mass of 50 kg. The…

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Q: al stress (in MPa) developed in the bar when it is subjected to a tension of P = 12 kN.

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Q: The bars of the truss each have a cross-sectional area of 1.25 in2. Determine the average normal…

A: Cross-section area of the bars = 1.24 in2 P = 6 kiP tan ϑ = 3 / 4  ϑ = tan-1 (3/4) ϑ = 36.87' Take…

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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.