The axial assembly consists of a solid 1-in-diameter aluminum alloy [E = 11600 ksi, v = 0.28, a = 12.3× 10-6/°F]rod (1) and a solid 1.64-in-diameter bronze [E = 16200 ksi, v = 0.14, a = 9.8 x 10-6/°F] rod (2). Assume L;-16 in., L2=26 in. If the supports at A and Care rigid and the assembly is stress free at 9°F, determine: (a) the normal stresses o1 , 0z in both rods at 133°F (positive if tensile, negative if compressive). (b) the displacement ug of flange B (positive if to the right, negative to the left). (c) the change in diameter Ad, of the aluminum rod. B (1) L2 Answers: (a) o, = ksi, o2 = ksi (b) ug = i in. %3D (c) Adi in.

Problem 3 (20 minutes) The bars' assembly has the dimensions, diameters and materials indicated (EST 29,000 ksi; EBR = 15,000 ksi). The assembly is fixed at one end and has D in, E = 1. 10 in and F20 kip. Determine the normal force N in the bronze and the steel = d=2in = 30 d= 1 in F(kip) BRONZE ← STEEL A B ↑ c D(in) Elin 2. Draw the normal force diagram along the assembly 3. Determine the elongations ALAB (of portion AB), ALBC (of portion BC) and ALAC

The column above is subjected to axial loading only. Assume the following: • E= 29000 ksi G = 10000 ksi • = 986 in4 A = 60 in? • L= 20 ft • Grade 60 steel (60 ksi yield stress) • The column is fixed at the top and pinned at the bottom Which of the following is closest to the maximum normal stress the column can support (before yielding or buckling)? 167 ksi 24 ksi 42 ksi 60 ksi

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The assembly consists of two A992 steel bolts AB and EF and an 6061-T6 aluminum rod CD. When the temperature is 30°C, the gap between the rod and rigid member AE is 0.1 mm. Assume BF is also rigid. (Figure 1) Figure 400 mm A B 25 mm 50 mm D 0.1 mm 300 mm E 1 of 1 25 mm Part A Determine the normal stress developed in the bolts if the temperature rises to 180°C. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. of = Submit Part B σ₁ = Submit O HA Value Request Answer Provide Feedback ■μÅ Value Determine the normal stress developed in the rod if the temperature rises to 180°C. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. Units Request Answer wwwww Units ? wwwww Review ? Next >