13_ch 05 Mechanical Design budynas_SM_ch05

13_ch 05 Mechanical Design budynas_SM_ch05 -...

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Chapter 5 127 (d) σ A , σ B = 15, 25 kpsi, | σ B | σ A |= 25 / 15 > 1, Eq. (5-32 b ): (109 30)15 109(30) 25 109 = 1 n n = 1 . 69 Ans. (a) n = OB OA = 4 . 25 2 . 83 = 1 . 50 (b) n = OD OC = 4 . 24 2 . 12 = 2 . 00 (c) n = OF OE = 15 . 5 11 . 3 = 1 . 37 (3rd quadrant) (d) n = OH OG = 4 . 9 2 . 9 = 1 . 69 5-14 Given: AISI 1006 CD steel, F = 0.55 N, P = 8.0 kN, and T = 30 N · m, applying the DE theory to stress elements A and B with S y
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