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02-07ChapGere.0001

# 02-07ChapGere.0001 - K from Fig 2-63 F OR d 5 1in c 5 b 2 d...

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Stress Concentrations The problems for Section 2.10 are to be solved by considering the stress-concentration factors and assuming linearly elastic behavior. Problem 2.10-1 The flat bars shown in parts (a) and (b) of the figure are subjected to tensile forces P 5 3.0 k. Each bar has thickness t 5 0.25 in. (a) For the bar with a circular hole, determine the maximum stresses for hole diameters d 5 1 in. and d 5 2 in. if the width b 5 6.0 in. (b) For the stepped bar with shoulder fillets, determine the maximum stresses for fillet radii R 5 0.25 in. and R 5 0.5 in. if the bar widths are b 5 4.0 in. and c 5 2.5 in. Solution 2.10-1 Flat bars in tension 160 CHAPTER 2 Axially Loaded Members P P P P b d b (a) (b) c R P 5 3.0k t 5 0.25in. (a) B AR WITH CIRCULAR HOLE ( b 5 6 in.) Obtain
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Unformatted text preview: K from Fig. 2-63 F OR d 5 1in.: c 5 b 2 d 5 5in. d / b 5 K < 2.60 s max 5 k s nom < F OR d 5 2 in.: c 5 b 2 d 5 4in. d / b 5 K < 2.31 s max 5 K s nom < 6.9 ksi 1 3 s nom 5 P ct 5 3.0 k (4 in.)(0.25 in.) 5 3.00 ksi 6.2 ksi 1 6 s nom 5 P ct 5 3.0 k (5 in.)(0.25 in.) 5 2.40 ksi (b) S TEPPED BAR WITH SHOULDER FILLETS b 5 4.0in. c 5 2.5in.; Obtain k from Fig. 2-64 F OR R 5 0.25in.: R / c 5 0.1 b / c 5 1.60 k < 2.30 s max 5 K s nom < F OR R 5 0.5in.: R / c 5 0.2 b / c 5 1.60 K < 1.87 s max 5 K s nom < 9.0 ksi 11.0 ksi s nom 5 P ct 5 3.0 k (2.5 in.)(0.25 in.) 5 4.80 ksi P P P P b d b (a) (b) c R = radius Probs. 2.10-1 and 2.10-2 A-PDF Split DEMO : Purchase from www.A-PDF.com to remove the watermark...
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