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.
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.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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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.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd0438992-cd01-4166-b6ed-4fc0fee0d14a%2F08a78343-585d-4966-9484-f86527388f9c%2Fmqzzuut_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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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