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35_ch 08 Mechanical Design budynas_SM_ch08

# 35_ch 08 Mechanical Design budynas_SM_ch08 - nents However...

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238 Solutions Manual • Instructor’s Solution Manual to Accompany Mechanical Engineering Design Bearing on bolt: Channel thickness is t = 3 / 16 in; A b = (0 . 625)(3 / 16) = 0 . 117 in 2 ; n = 57 000 1318 / 0 . 117 = 5 . 07 Ans. Bearing on channel: n = 46 000 1318 / 0 . 117 = 4 . 08 Ans. Bearing on plate: A b = 0 . 625(1 / 4) = 0 . 1563 in 2 n = 45 500 1318 / 0 . 1563 = 5 . 40 Ans. Bending of plate: I = 0 . 25(7 . 5) 3 12 0 . 25(0 . 625) 3 12 2 ± 0 . 25(0 . 625) 3 12 + ² 1 4 ³² 5 8 ³ (2 . 5) 2 ´ = 6 . 821 in 4 M = 6250 lbf · in per plate σ = Mc I = 6250(3 . 75) 6 . 821 = 3436 psi n = 45 500 3436 = 13 . 2 Ans. 8-52 Specifying bolts, screws, dowels and rivets is the way a student learns about such compo-
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Unformatted text preview: nents. However, choosing an array a priori is based on experience. Here is a chance for students to build some experience. 8-53 Now that the student can put an a priori decision of an array together with the speciﬁcation of fasteners. 8-54 A computer program will vary with computer language or software application. 5 8 D " 1 4 " 1 2 7 " 5"...
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