220_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

220_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

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Unformatted text preview: Sec_2.8-2.12.qxd 214 9/25/08 11:43 AM Page 214 CHAPTER 2 Axially Loaded Members (b) MAXIMUM TENSILE STRESS (EQ. 2–55) Edmax L smax (c) IMPACT FACTOR (EQ. 2-61) ; 26,000 psi Impact factor dmax dst 0.0312 in. 0.00024 in. 130 ; Problem 2.8-4 A block weighing W 5.0 N drops inside a cylinder 200 mm onto a spring having stiffness k 90 N/m from a height h (see figure). Block (a) Determine the maximum shortening of the spring due to the impact, and (b) determine the impact factor. Cylinder h k Prob. 2.8-4 and 2.8-5 Solution 2.8-4 W 5.0 N Block dropping onto a spring h 200 mm k 90 N/m (a) MAXIMUM SHORTENING OF THE SPRING dst W k 5.0 N 90 N/m Eq. (2-53): dmax 55.56 mm dst c 1 + a 1 + 215 mm ; 2h 1/2 bd dst (b) IMPACT FACTOR (EQ. 2-61) Impact factor dmax dst 215 mm 55.56 mm 3.9 ; ...
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This note was uploaded on 12/22/2011 for the course MEEG 310 taught by Professor Staff during the Fall '11 term at University of Delaware.

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