A steel [E = 200 GPa; ν = 0.3; α = 10.9 ×10-6/°C] plate has a rectangular hole at its center and four circular holes at the corners. At an initial temperature of Ti = –10°C, the plate is 95 mm wide, 135 mm long, and 11 mm thick. The rectangular hole is 30 mm wide and 65 mm long. The circular holes have a diameter of 17 mm. At a final temperature of Tf = 43°C, determine the width of the rectangular hole.
Read DetailsRigid beam ABC supports two rods that initially have no strain. If a temperature increase in rod (1) creates a normal strain of 2,829 μin./in. in it, determine the normal strain in rod (2). The initial lengths are a = 10 in., b = 16 in., c = 32 in., and d = 10 in. Assume there is no slack in the connections.
Read DetailsRigid beam ABC supports two rods that initially have no strain. If a temperature increase in rod (1) creates a normal strain of 2,567 μin./in. in it, determine the normal strain in rod (2). The initial lengths are a = 8 in., b = 16 in., c = 39 in., and d = 9 in. Assume there is no slack in the connections.
Read DetailsA load of P = 660 lb is applied to beam ABC. Bar (1) is made of brass [E = 14,800 ksi; ν = 0.35] and has a circular cross section with a diameter of 1.20 in. Determine the magnitude of the normal strain in bar (1). Let a = 31 in., b = 16 in., and c = 9 in.
Read DetailsA Bush’s Best can weighs 1.15 lb and is 2.88 in. in diameter. A Libby’s can weighs 1.16 lb and is 2.93 in. in diameter. What is the largest bearing stress that occurs between the cans and the table? Assume each can has a smooth base and sits flat on the table.
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