Chapter_1_solutions(6)
发布时间：2021-06-07
(d) Z =12(16.4) = 197 cm3 Ans. (e) w = 0.208(175) = 36.4 N/m Ans. (f) = 0.001 89(25.4) = 0.0480 mm Ans. (g) v = 1200(0.0051) = 6.12 m/s Ans. (h) = 0.002 15(1) = 0.002 15 mm/mm Ans. (i) V = 1830(25.43) = 30.0 (106) mm3 Ans.
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1-24 (a) = M /Z = 1770/0.934 = 1895 psi = 1.90 kpsi Ans. (b) = F /A = 9440/23.8 = 397 psi Ans. (c) y =Fl3/3EI = 270(31.5)3/[3(30)106(0.154)] = 0.609 in Ans. (d) = Tl /GJ = 9740(9.85)/[11.3(106)( /32)1.004] = 8.648(10 2) rad = 4.95 Ans.
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1-25 (a) =F / wt = 1000/[25(5)] = 8 MPa Ans. (b) I = bh3 /12 = 10(25)3/12 = 13.0(103) mm4 Ans. (c) I = d4/64 = (25.4)4/64 = 20.4(103) mm4 Ans. (d) =16T / d 3 = 16(25)103/[ (12.7)3] = 62.2 MPa Ans.
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1-26 (a) =F /A = 2 700/[ (0.750)2/4] = 6110 psi = 6.11 kpsi Ans. (b) = 32Fa/ d 3 = 32(180)31.5/[ (1.25)3] = 29 570 psi = 29.6 kpsi Ans. (c) Z = (do4 di4)/(32 do) = (1.504 1.004)/[32(1.50)] = 0.266 in3 Ans. (d) k = (d 4G)/(8D 3 N) = 0.06254(11.3)106/[8(0.760)3 32] = 1.53 lbf/in Ans.
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