P.7.21 A short bar of copper, 25 mm in diameter, is enclosed centrally within a steel tube of external diameter 36 mm and thickness 3 mm. At 0°C the ends of the bar and tube are rigidly fastened together and the complete assembly heated to 80°C. Calculate the stress in the bar and in the tube if E for copper is 100 000 N/mm?, E for steel is 200 000 N/mm? and the coefficients of linear expansion of copper and steel are 0-000 01/°C and 0-000 006/°C, respectively. Ans. o (steel) =28-3 N/mm? (tension), o (copper) = 17-9 N/mm? (compression). A short bar of copper, 25 mm in diameter, is enclosed centrally within asteel tube of external diameter 36 mm and thickness 3 mm. At 0°C the ends of theР.7.21bar and tube are rigidly fastened together and the complete assembly heated to 80°C.Calculate the stress in the bar and in the tube if E for copper is 100 000 N/mm?, Efor steel is 200 000 N/mm? and the coefficients of linear expansion ofsteel are 0-000 01/°C and 0-000 006/°C, respectively.соррerando (steel) = 28-3 N/mm2 (tension),o (copper) = 17-9 N/mm² (compression).Ans.

Stress produces in the material due to changes in temperature is known as thermal stress. Condition…

Answered: P.7.21 A short bar of copper, 25 mm in…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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P.7.21 A short bar of copper, 25 mm in diameter, is enclosed centrally within a steel tube of external diameter 36 mm and thickness 3 mm. At 0°C the ends of the bar and tube are rigidly fastened together and the complete assembly heated to 80°C. Calculate the stress in the bar and in the tube if E for copper is 100 000 N/mm?, E for steel is 200 000 N/mm? and the coefficients of linear expansion of copper and steel are 0-000 01/°C and 0-000 006/°C, respectively. Ans. o (steel) =28-3 N/mm? (tension), o (copper) = 17-9 N/mm? (compression).

A short bar of copper, 25 mm in diameter, is enclosed centrally within a
steel tube of external diameter 36 mm and thickness 3 mm. At 0°C the ends of the
Р.7.21
bar and tube are rigidly fastened together and the complete assembly heated to 80°C.
Calculate the stress in the bar and in the tube if E for copper is 100 000 N/mm?, E
for steel is 200 000 N/mm? and the coefficients of linear expansion of
steel are 0-000 01/°C and 0-000 006/°C, respectively.
соррer
and
o (steel) = 28-3 N/mm2 (tension),
o (copper) = 17-9 N/mm² (compression).
Ans.

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