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146_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

146_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

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140 CHAPTER 2 Axially Loaded Members Problem 2.4-11 A bimetallic bar (or composite bar) of square cross section with dimensions 2 b 2 b is constructed of two different metals having moduli of elasticity E 1 and E 2 (see figure). The two parts of the bar have the same cross-sectional dimensions. The bar is compressed by forces P acting through rigid end plates. The line of action of the loads has an eccentricity e of such magnitude that each part of the bar is stressed uniformly in compression. (a) Determine the axial forces P 1 and P 2 in the two parts of the bar. (b) Determine the eccentricity e of the loads. (c) Determine the ratio 1 / 2 of the stresses in the two parts of the bar.
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