. A steel rod of 20 mm diameter passes centrally through a tight fitting copper tube of external diameter 40 mm. The tube is closed with the help of rigid washers of negligible thickness and nuts threaded on the rod. The nuts are tightened till the compressive load on the tube is 50 kN. Determine the stresses in the rod and the tube, when the temperature of the assembly falls by 50°C. For steel, E = 200 GNm-2 and a = 12 x 10-6 /°C For copper, E = 100 GNm-2 and a = 18 x 10-6 /°C.
Answers
Answer:
Explanation:steel rod 20 mm diameter passes centrally through a steel tube 25 mm internal diameter and 40 mm external diameter. The tube is 750 mm long and is closed by rigid washers of negligible thickness which are fastened by nuts threaded on the rod. The nuts are tightened until the compressive load on the tube is 20kN. Calculate the stresses in the tube and the rod. Find the increase in these stresses when one nut is tightened by one quarter of a turn relative to the other. There are 0.4 threads per mm length. Take E = 200 GN/m2. Read more on Sarthaks.com - https://www.sarthaks.com/514030/steel-diameter-passes-centrally-through-steel-tube-internal-diameter-external-diameter
Explanation:
. A steel rod of 20 mm diameter passes centrally through a tight fitting copper tube of external diameter 40 mm. The tube is closed with the help of rigid washers of negligible thickness and nuts threaded on the rod. The nuts are tightened till the compressive load on the tube is 50 kN. Determine the stresses in the rod and the tube, when the temperature of the assembly falls by 50°C. For steel, E = 200 GNm-2 and a = 12 x 10-6 /°C For copper, E = 100 GNm-2 and a = 18 x 10-6 /°C.