Problem # 2. At room temperature (20°C) a 0.5-mm gap exists between the ends of the rods shown. At a later time when the temperature has reached 140 °C, determine (a) the normal stress in the aluminum rod Ans: A -300 mm Aluminum A = 2000 mm² E = 75 GPa α = 23 x 16-6/°C 0.5 mm -250 mm Stainless steel A = 800 mm² B E = 190 GPa a = 17.3 x 10-6/°C
Problem # 2. At room temperature (20°C) a 0.5-mm gap exists between the ends of the rods shown. At a later time when the temperature has reached 140 °C, determine (a) the normal stress in the aluminum rod Ans: A -300 mm Aluminum A = 2000 mm² E = 75 GPa α = 23 x 16-6/°C 0.5 mm -250 mm Stainless steel A = 800 mm² B E = 190 GPa a = 17.3 x 10-6/°C
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
![Problem
# 2.
At room temperature
(20°C) a 0.5-mm gap
exists between the ends of the rods
shown. At a later time when the
temperature has reached 140 °C,
determine (a) the normal stress in the
aluminum
rod
Ans:
A
-300 mm
Aluminum
A = 2000 mm²
E = 75 GPa
α = 23 x 16-6/°C
0.5 mm
-250 mm
Stainless steel
A = 800 mm²
B
E = 190 GPa
a = 17.3 x 10-6/°C](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F826128f2-0414-4c4e-b2ee-4e6240ece7d9%2Fd3394317-a9b6-436c-8846-0caec8de8b92%2Fofjnce_processed.png&w=3840&q=75)
Transcribed Image Text:Problem
# 2.
At room temperature
(20°C) a 0.5-mm gap
exists between the ends of the rods
shown. At a later time when the
temperature has reached 140 °C,
determine (a) the normal stress in the
aluminum
rod
Ans:
A
-300 mm
Aluminum
A = 2000 mm²
E = 75 GPa
α = 23 x 16-6/°C
0.5 mm
-250 mm
Stainless steel
A = 800 mm²
B
E = 190 GPa
a = 17.3 x 10-6/°C
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