Answered: -200mm- -300mm- -- Aluminum E=70 GPa…

Engineering

Civil Engineering

-200mm- -300mm- -- Aluminum E=70 GPa A=900 mm? Steel E=200 GPa A=1200 mm?

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter6: Introduction To Mechanical Properties

Section: Chapter Questions

Problem 8ETSQ

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Concept explainers

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 composite bar shown is firmly attached to unyielding supports. An axial load P= 200 kN is applied at 20°C. Assume a = 11.7 um/(m °C) for steel and 23.0 um'(m °C) for aluminum. Find the reaction at the left support.

a. find the reaction at the left support
b.find the stress at the steel
c. find the stress at the aluminum

-200mm-
-300mm-
--
Aluminum
E=70 GPa
A=900 mm?
Steel
E=200 GPa
A=1200 mm?

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