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 A В -"Rigid" |(1) (2) 250 mm
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 A В -"Rigid" |(1) (2) 250 mm
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![Problem 2
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.
2- Determine the (small) angle 0 through which the beam AC would rotate due
to this temperature change.
-200 mm
+ 80 mm
B
-"Rigid"
|(1)
(2) 250 mm](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F84f5615a-c133-4253-85f2-0899fb749bba%2F68f3f2cf-d842-4acf-8c97-1b4b2c929f35%2Fibpjqd8_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Problem 2
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.
2- Determine the (small) angle 0 through which the beam AC would rotate due
to this temperature change.
-200 mm
+ 80 mm
B
-"Rigid"
|(1)
(2) 250 mm
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