The mechanical system consists of two identical steel rods (A = 30 mm?, E = 200GPA, a = 15×106/°C) and a "rigid" beam AC. The beam is supported by a smooth pin at B. The nuts at A and C are initially tightened just enough to remove the slack, leaving the two rods stress-free. 1- Determine the axial stresses induced in rods (1) and (2) if the temperature of both rods is decreased by 60°C. 2- Determine the (small) angle 0 through which the beam AC would rotate due to this temperature change.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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The mechanical system consists of two identical steel rods (A = 30 mm?, E = 200GPA,
a = 15×106/°C) and a "rigid" beam AC. The beam is supported by a smooth pin at
B. The nuts at A and C are initially tightened just enough to remove the slack,
leaving the two rods stress-free.
1- Determine the axial stresses induced in rods (1) and (2) if the temperature of
both rods is decreased by 60°C.
2- Determine the (small) angle e through which the beam AC would rotate due
to this temperature change.
-200 mm
-80 mm
A
B
-"Rigid"
|(1)
(2) 250 mm
Transcribed Image Text:The mechanical system consists of two identical steel rods (A = 30 mm?, E = 200GPA, a = 15×106/°C) and a "rigid" beam AC. The beam is supported by a smooth pin at B. The nuts at A and C are initially tightened just enough to remove the slack, leaving the two rods stress-free. 1- Determine the axial stresses induced in rods (1) and (2) if the temperature of both rods is decreased by 60°C. 2- Determine the (small) angle e through which the beam AC would rotate due to this temperature change. -200 mm -80 mm A B -"Rigid" |(1) (2) 250 mm
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