A solid circular composite bar (made of aluminum in segment AB, steel in segment BC and Brass in Segment CD) is fixed to two rigid walls without any initial internal stresses. If two axial loads Fs = 200 kN and Fc =100 kN are. applied to the bar at locations B and C,. respectively, as shown in the figure, determine the normal stress developed in the axial direction of each segment of the bar. Aluminum Steel Brass F-200 kN Fe=100 kN LAI = 250 mm A- 400 mm? E= 60 GPa Ls = 200 mm As = 600 mm A- 2000 mm Es - 200 GPa L = 200 mm Note: the length (L), cross sectional area (A) and Young's modulus (E) of the three segments are given in the figure, respectively. ER= 80 GPa

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Fluid Dynamics

The study of the flow of gases and liquids, usually in and around solid surfaces, is known as fluid dynamics in physics and engineering. Fluid dynamics, for example, can be used to evaluate the movement of air through an airplane wing or the surface of a vehicle. It can also be used in ship design to increase the speed at which ships pass through water.