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Question: A steel rod of 20 mm diameter passes centrally through a copper tube of external diameter 40 mm and – Free Chegg Question Answer

EA steel rod of 20 mm diameter passes centrally through a copper tube of external diameter 40 mm and internal diameter 20 mm. The tube is closed at each end with the help of rigid washers (of negligible thickness) which are screwed by the nuts. The nuts are tightened until the compressive load on the copper tube is 50 kN. Determine the stresses in the rod and the tube, when the temperature of whole assembly falls by 50°C. Take Es = 200 GPa ; Ec = 100 GPa ; αs = 12 × 10–6/°C and αc = 18 × 106/°C.

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