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hw1_2_sol - 1.3 Two solid cylindrical rods AB and 8C are...

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Unformatted text preview: 1.3 Two solid cylindrical rods AB and 8C are welded together (it B and loaded as shown Knowing that the average normal stress must not exceed 175 MPa in rod AB and lSO MPa in rod BC" datermine the smhllesl allowable values ol' (/1 and (/3. 1.7 Each m” (be four verticai links has an 8 X 36-mm uniform 1'9"":111- gulm‘ crass section and each of the Your pins has a. 16mm dimmer. Dug. ;. ‘ the maximum value of w: average normai strexs m the links connecting {a} points 8 and D, (52) points C and E. he [ink DE !S g m. thtck and 1 m. Wtde, determine the ‘ 4 'm ‘ .t m I‘M-I'vkwi‘A 1 2 in V 4—v—~>—Le;~-v’v‘: 6 = O, (b) 0 = 90°. ; t t r ‘WH r k I t1; 1,9 Knoyitng that t normal stress in the central portion of that link when (a) y I - ‘ v a a LI" MMMM'J’M’MMAW” w way” V w i "W; ’“ at“? 3 5) d1} 4 t t; , r o w v /« W CPS” '— 1 5a] , f (3;) pd/‘sé? G m}???va ~3l0‘ 75 g a) V' I» ’36:} Q 118 When the ‘forée P reached 1600 1b, the wooden specian shown failed in shear along the surface indicated by the dashed line. Determine the average shearing stress akmg that surface at the time of failure. w y Cfia] \. gé p} «50:? F’waad “ )7“ MOO 120 The load P applied {0 a steel rod ls distributed to 21 timber support by an annular washer. The diameter of the rod is 22 mm and the inner diame— ter of" the washer is 25 mm, which slightly larger than the diameter of the hole Determine the smallest allowable outer diameter [I of the washer. know— ing that the axial normal stress; in the steel rod 35 MP2! and that the average bearing stress between the washer and the timber must not exceed 5 MP3, “"‘ " '6‘ xii we » 79w; é3§CMVafle§P @mmgxzo gEVr” } (:2! pg /3. 3 Clam/l 35;? L x3353”) , fab»ng £§CHPA73§ 70:32:»yf] _f: 5 {ff/Pa) /3 ’3 “a “0 Mm rm;:tta=5’§£oézm 1’)- we \. {mega f/ <32» w m 7/ 3M mm» Ag, 2 WA , 1.25 A g—in.~diameter steel rod AB is fitted to a round hole near and C of the: wooden member CD‘ For the loading shown, detennine (a) the maxi— mum average normal stress in the wood, (1;) the distance 17 for which the av- erage shearing stress is '100 psi on the surfaces indicated by the dashed Ii'nes, (c) the average bearing stre3s on the wood. " mfi : m _« EW \ v 5* ~ 2. am NH g.) cm) Tam: F5 Mm) WW6”: {066,955} “‘9 $57} ab) if”; MM 5 “‘~ )9)“th W b 22 7555” .A. I w 5” . x : Famed : “W 1,40 Thfi hmimnmflink BC isj in thick, has a width w : {.25. in, and is made of 21 meal with 21 65~I<Si ultimare wength in tension. What {ha {actor of sai’eiy ii' the structure shown is designed to SLlppm‘t a load of P = H) kips‘.‘ a) @ng ; FL 4” Z 1.42 Link AB is to be made of a 5166! for which [he ultmmte norma! sts‘ess is 450 MR1. Determine the crossrsectmm‘d area for A8 for which the fac— tor of safety will be 3.50, Assume that the link win be adequatdy reinforced around the pins at A and B. a: 0 -_;~:;‘\ + 7>2><OJZUanm]»{’10><04{ér{~>79 *’ €45 §xh 3§0X 0%”ij 3 0"? ’ D1 2.05m) “L 5w 520.5; (M) r»? pm : 20 » gwnnfl £27”) {"9} . , 3' LN , 0”. < (5W 3;; 20 SVCLaN] E: [Max/o [gym] 3; FE? ‘“ WM.» / WWWW 355 g ‘ AM» gig“, M g :77" A _ V 160mg) I} {12; j/iiflzg Jwfiinwmf ...
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