The assembly consists of two red brass C83400 copper rods AB and CD of diameter 30 mm, a stainless 304 steel alloy rod EF of diameter 40 mm, and a rigid cap G. The supports at A, C and F are rigid. Modul of elasticy for the copper is Ecopper = 101 GPa. Modul of elasticity for the steel is Esteel = 193 GPa. (Figure 1) Figure ▼ Part A A -300 mm- C 30 mm 30 mm B D G E 450 mm 40 kN 40 kN 40 mm F < 1 of 1

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

What maximum load P can be applied without exceeding an allowable stress of 70 MPa for aluminum or 120 MPa for steel? Can a larger load P be carried if the length of the aluminum rod is changed. the length of the steel portion being kept the same? If so, determine this length

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 >