The lower ends of the three bars shown in the figure are at the same level before the rigid homogeneous W = 100 kNblock is attached. The properties of the bars are shown in the table.SteelBronzeLength, LArea, AModulus of elasticity, ECoefficient of thermal expansion, a1.00 m500 mm?1.60 m900 mm200 GPa83 GPa11.7x106 /°C18x10 /°CBronzeSteelSteelWThe temperature of the bars is then increased by 80°C. The block is assumed toremain horizontal after all deformations have occurred.Which of the following most nearly gives the stress developed in the steel bar?

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The lower ends of the three bars shown in the figure are at the same level before the rigid homogeneous W = 100 kN block is attached. The properties of the bars are shown in the table. Steel Bronze Length, L Area, A Modulus of elasticity, E Coefficient of thermal expansion, a 1.00 m 500 mm2 1.60 m 900 mm2 200 GPa 83 GPa 11.7x10 /°C 18x10-6 /°C Bronze Steel Steel A B C W The temperature of the bars is then increased by 80°C. The block is assumed to remain horizontal after all deformations have occurred. Which of the following most nearly gives the stress developed in the steel bar?

The lower ends of the three bars shown in the figure are at the same level before the rigid homogeneous W = 100 kN block is attached. The properties of the bars are shown in the table. Steel Bronze Length, L Area, A Modulus of elasticity, E Coefficient of thermal expansion, a 1.00 m 500 mm2 1.60 m 900 mm2 200 GPa 83 GPa 11.7x10 /°C 18x10-6 /°C Bronze Steel Steel A B C W The temperature of the bars is then increased by 80°C. The block is assumed to remain horizontal after all deformations have occurred. Which of the following most nearly gives the stress developed in the steel bar?

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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Material Properties

Construction in civil engineering demands high strength, durability, and longevity. These targets can be achieved by better design and analysis, along with the correct choice of materials. Different materials have different properties and hence, they respond and performs differently under the various condition of external loadings. It is therefore a critical task of an engineer to select the right material based on the property that the material is supposed to function in real-time. When speaking about the property, there are different categories of material properties like chemical property, physical property, mechanical property, electrical property, magnetic property, thermal property, etc. These material properties form the basis of material selection in various applications.

Question

The lower ends of the three bars shown in the figure are at the same level before the rigid homogeneous W = 100 kN
block is attached. The properties of the bars are shown in the table.
Steel
Bronze
Length, L
Area, A
Modulus of elasticity, E
Coefficient of thermal expansion, a
1.00 m
500 mm?
1.60 m
900 mm
200 GPa
83 GPa
11.7x106 /°C
18x10 /°C
Bronze
Steel
Steel
W
The temperature of the bars is then increased by 80°C. The block is assumed to
remain horizontal after all deformations have occurred.
Which of the following most nearly gives the stress developed in the steel bar?

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