The rigid bar ABC is pinned at B and attached to the two vertical rods.Initially, the bar is horizontal and the vertical rods are stress-free.Determine the stress in the aluminum rod if the temperature of theboth rods is decreased by 40°C. Neglect the weight of bar ABC.3.SteelL=0.9 mA = 300 mm?E=200 x 10 N/ma 11.7 um/(m C)AluminumL= 1.2 mA= 1200 mmE= 70 x 10 N/ma = 23 um/(m C)Answer:Oal =0.6 m1.2 m2/2A rigid bar of negligible weight is supported as shown in the figure. IfW = 80 kN, compute the temperature increase that will cause theBronzeL = 3 mA = 1300 mmE = 83 GPa4.SteelL= 1.5 mA = 320 mm+1m-E= 200 GPastress in the steel rod to be 55 MPa. Assume the coefficients of linearexpansion are 11.7 µm/(m-°C) for steel and 18.9 µm/(m.°C) for bronze.ΔΤAnswers:2.5 m1.5 m

Answered: Image /qna-images/answer/e1de9bc9-b689-4144-bd36-1291130c94ed.jpg

3. The rigid bar ABC is pinned at B and attached to the two vertical rods. Initially, the bar is horizontal and the vertical rods are stress-free. Determine the stress in the aluminum rod if the temperature of the both rods is decreased by 40°C. Neglect the weight of bar ABC. Aluminum L12m A 1200 mm E- 70. 10 N/m 23 ym(m"C) Steel L0.9m 300 mm E 2001 a11.7 m/(m C) Answer: Jat 12m

3. The rigid bar ABC is pinned at B and attached to the two vertical rods. Initially, the bar is horizontal and the vertical rods are stress-free. Determine the stress in the aluminum rod if the temperature of the both rods is decreased by 40°C. Neglect the weight of bar ABC. Aluminum L12m A 1200 mm E- 70. 10 N/m 23 ym(m"C) Steel L0.9m 300 mm E 2001 a11.7 m/(m C) Answer: Jat 12m

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Planar Stresses

Question

The rigid bar ABC is pinned at B and attached to the two vertical rods.
Initially, the bar is horizontal and the vertical rods are stress-free.
Determine the stress in the aluminum rod if the temperature of the
both rods is decreased by 40°C. Neglect the weight of bar ABC.
3.
Steel
L=0.9 m
A = 300 mm?
E=200 x 10 N/m
a 11.7 um/(m C)
Aluminum
L= 1.2 m
A= 1200 mm
E= 70 x 10 N/m
a = 23 um/(m C)
Answer:
Oal =
0.6 m
1.2 m
2/2
A rigid bar of negligible weight is supported as shown in the figure. If
W = 80 kN, compute the temperature increase that will cause the
Bronze
L = 3 m
A = 1300 mm
E = 83 GPa
4.
Steel
L= 1.5 m
A = 320 mm
+1m-E= 200 GPa
stress in the steel rod to be 55 MPa. Assume the coefficients of linear
expansion are 11.7 µm/(m-°C) for steel and 18.9 µm/(m.°C) for bronze.
ΔΤ
Answers:
2.5 m
1.5 m

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