05-01ChapGere.0001

05-01ChapGere.0001 - permissible strain in the copper is e...

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Longitudinal Strains in Beams Problem 5.4-1 Determine the maximum normal strain e max produced in a steel wire of diameter d 5 1/16 in. when it is bent around a cylindrical drum of radius R 5 24 in. (see figure). Solution 5.4-1 Steel wire 5 Stresses in Beams (Basic Topics) 285 d R R 5 24 in. From Eq. (5-4): Substitute numerical values: e max 5 1 / 16 in. 2(24 in.) 1 1 / 16 in. 5 1300 3 10 2 6 5 d / 2 R 1 d / 2 5 d 2 R 1 d e max 5 y r d 5 1 16 in. d R Cylinder Problem 5.4-2 A copper wire having diameter d 5 3 mm is bent into a circle and held with the ends just touching (see figure). If the maximum
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Unformatted text preview: permissible strain in the copper is e max 5 0.0024, what is the shortest length L of wire that can be used? Solution 5.4-2 Copper wire d = diameter L = length d 5 3 mm max 5 0.0024 From Eq. (5-4): L min 5 p d e max 5 p (3 mm) 0.0024 5 3.93 m e max 5 y r 5 d / 2 L / 2 p 5 p d L L 5 2 p r r 5 L 2 p d r A-PDF Split DEMO : Purchase from www.A-PDF.com to remove the watermark...
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