655_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

655_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

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Spherical Pressure Vessels When solving the problems for Section 8.2, assume that the given radius or diameter is an inside dimension and that all internal pressures are gage pressures. Problem 8.2-1 A large spherical tank (see figure) contains gas at a pressure of 450 psi. The tank is 42 ft in diameter and is constructed of high-strength steel having a yield stress in tension of 80 ksi. Determine the required thickness (to the nearest 1/4 inch) of the wall of the tank if a factor of safety of 3.5 with respect to yielding is required.
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Unformatted text preview: Probs. 8.2-1 and 8.2-2 8 Applications of Plane Stress (Pressure Vessels, Beams, and Combined Loadings) 649 Solution 8.2-1 Radius: r ± 252 in. Internal Pressure: p ± 450 psi Yield stress: s Y ± 80 ksi (steel) Factor of safety: n ± 3.5 M INIMUM WALL THICKNESS t min From Eq. (8-1): or s Y n ± pr 2 t s max ± pr 2 t r ± 1 2 42 * 12 t ± 2.481 in. to nearest 1/4 inch, t min ± 2.5 in. ; t ± prn 2 s Y 08Ch08.qxd 9/18/08 11:03 AM Page 649...
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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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