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501_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

501_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

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SECTION 5.13 Stress Concentrations 495 Solution 5.13-5 Beam with notches and a hole (a) M INIMUM NOTCH RADIUS From Fig. 5-50, with and we get R min L 0.090 h 1 0.45 in. ; R h 1 L 0.090 h h 1 1.1, K 2.15 K s max s nom 42,000 psi 19,500 psi 2.15 s nom 6 M bh 1 2 19,500 psi h h 1 5.5 in. 5 in. 1.1 M 130 k-in. s max 42,000 psi h 5.5 in. h 1 5 in. b 1.6 in. (b) L
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Unformatted text preview: Assume and use Eq. (5-56). Solve numerically: d max ± 4.13 in. ; d 3 + 23.21 d ² 166.4 ± 42,000 psi ± 12(130 k-in.) d (1.6 in.)[(5.5 in.) 3 ² d 3 ] or s B ± 12 Md b ( h 3 ² d 3 ) d h 7 1 2 05Ch05.qxd 9/25/08 2:29 PM Page 495...
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