The mechanical system consists of two identical steel rods (A = 30 mm?, E = 200GPA, a = 15x106/°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. %3D 2- Determine the (small) angle 0 through which the beam AC would rotate due to this temperature change. -200 mm :- 80 mm А C -"Rigid" (2) 250 mm (1)
The mechanical system consists of two identical steel rods (A = 30 mm?, E = 200GPA, a = 15x106/°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. %3D 2- Determine the (small) angle 0 through which the beam AC would rotate due to this temperature change. -200 mm :- 80 mm А C -"Rigid" (2) 250 mm (1)
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:Problem 2
The mechanical system consists of two identical steel rods (A = 30 mm2, E = 200GPA,
a = 15x106/°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.
-200 mm
80 mm
В
"Rigid"
(2) 250 mm
(1)
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