Shown below is a rigid beam ABC that is connected by pinned connections to rod (1) at A, rod (2) at C, and pivots freely at B. Rod (1) is made of bronze (E=100GPA, a=16.9x10-6/°C) and is 24mm in diameter. Rod (2) is made of aluminum (E=70GPA, a=22.5x10-6/°C) and is 16mm in diameter. The bars are unstressed as shown at 25°C. The temperature of bar (2) is reduced to 10°C while the temperature of bar (1) is held constant. Find the normal stress in bars (1) and (2). 250mm (1) B A

Elements Of Electromagnetics
7th Edition
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Author:Sadiku, Matthew N. O.
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Shown below is a rigid beam ABC that is connected by pinned connections to
rod (1) at A, rod (2) at C, and pivots freely at B. Rod (1) is made of bronze (E=100GPA,
a=16.9x10-6/°C) and is 24mm in diameter. Rod (2) is made of aluminum (E=70GPA,
a=22.5x10-6/°C) and is 16mm in diameter. The bars are unstressed as shown at 25°C.
The temperature of bar (2) is reduced to 10°C while the temperature of bar (1) is held
constant. Find the normal stress in bars (1) and (2).
250mm
(1)
|이
B
A
200mm
350mm
500mm
(2)
Transcribed Image Text:Shown below is a rigid beam ABC that is connected by pinned connections to rod (1) at A, rod (2) at C, and pivots freely at B. Rod (1) is made of bronze (E=100GPA, a=16.9x10-6/°C) and is 24mm in diameter. Rod (2) is made of aluminum (E=70GPA, a=22.5x10-6/°C) and is 16mm in diameter. The bars are unstressed as shown at 25°C. The temperature of bar (2) is reduced to 10°C while the temperature of bar (1) is held constant. Find the normal stress in bars (1) and (2). 250mm (1) |이 B A 200mm 350mm 500mm (2)
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