1. A brass shell is fully bonded to a steel core; the cross-sectional dimensions of the shell and core are shown in the figure below. The length of the assembly is L= 0.25 m. The Young's moduli are E, = 105 GPa for the brass and E, = 200 GPa for the steel. The axial forces, P = 60 kN, are applied to the assembly. Determine the normal stress and deflection of the brass shell. Ans: Pi = 23.8 kN, ơb = 47.6 MPa (T), 8= 0.113 mm (longer). 20 mm shell 20 пm 30 mm core 30 mm

A horizontal load P is applied to an assembly consisting of two inclined bars, as shown in the figure.  The cross-sectional area of bar (1) is 1.30 in.2, and the cross-sectional area of bar (2) is 1.75 in.2.  The normal stress in either bar may not exceed 24 ksi.  Determine the maximum load P that may be applied to this assembly.  Assume dimensions of a=14.5 ft, b=9.0 ft, and c=14.5 ft.  Determine the allowable force F1 in member (1) and the allowable force F2 in member (2).