347_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

347_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

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Unformatted text preview: Sec_3.9-3.11.qxd 9/27/08 1:14 PM Page 341 SECTION 3.11 Stress Concentrations in Torsion 341 Solution 3.11-5 Stepped shaft in torsion D2 Use trial-and-error. Select trial values of D1 1.5 in. 15,000 psi allow T D1 (in.) 4800 lb-in. Full quarter-circular fillet D2 D1 D2 R 2 D1 2R D1 2 0.75 in. R (in.) R/D1 K 1.30 1.35 1.40 0.100 0.075 0.050 0.077 0.056 0.036 1.38 1.41 1.46 max(psi) 15,400 14,000 13,000 USE FIG. 3-48 FOR THE STRESS-CONCENTRATION FACTOR tmax Kt nom Ka 16T pD3 1 K 16(4800 lb-in.) c d p D3 1 24,450 b K D3 1 From the graph, minimum D1 1.31 in. ; ...
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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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