Question

shown in Figure 2. Two circular disks A and B are welded to the ends of both bars. The disks lie in planes disks A and B subjecting the bars to torsion. If the allowable maximum shear stress is 35 MPa and the allowable rate of twist is 3°/m for both bars, determine the smallest outer diameter (D, and Di) of both bars. The shear modulus of elasticity is 39 GPa to the axes of the bars. Forces 15 kN and 20 kN act on 15 kN 20 kN 17.5 cm 0.7D 15 kN 20 KN Di 30 Figure 2 (b) Two solid steel shafts are connected by the gears as shown in Figure 3. The length and diameter of steel shafts AB and CD are shown in the figure. When a torque T of magnitude 500 N m is applied at A, determine the maximum shear stress of steel shafts AB and CD and the angle of rotation at A if the shear modulus of elasticity is 78 GPa 25 400 mm 600 mm T-500 Nm Figure 3

Answer 1

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