The rigid bar of negligible weight is supported as shown in the figure. If W = 104 kN, compute the temperature change of the assembly that will cause a tensile stress of 50 MPa in the steel rod. Use the following data:

The rigid bar of negligible weight is supported as shown in the figure. If W = 104 kN, compute the temperature change of the assembly that will cause a tensile stress of 50 MPa in the steel rod. Use the following data:

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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Concept explainers

Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.

Question

The rigid bar of negligible weight is supported as shown in the figure. If W = 104 kN, compute the
temperature change of the assembly that will cause a tensile stress of 50 MPa in the steel rod. Use the following data:

Each copper rod
Aluminum rod
A (mm²)
301
1406
a(/°C)
11.7 x 10-6
18.9 x 10-6
E (GPa)
200
83

Steel
1.0 m
k
1+0.75*6 m
2.5 m
W
Bronze
1.5 m
3+0.25*1 m

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