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assignment 29 solutions

assignment 29 solutions - Problem 3.4 3.4 Knowing that d =...

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Unformatted text preview: Problem 3.4 3.4 Knowing that d = 1.2 in., determine the torque T that causes a maximum‘ shearing stress of 7.5 ksi in the hollow shaft shown. (:1: ,iAJl =(-'2—\(n.c3= 0.2 ‘m c = 0.8 2.. C.=-&J. =(&)(L2): 0.6 En J : yd— cf) = 1(034- 0.6”) = 0.9393 in‘* 1w: 1% T:§_gmx JWfl : 4,12 [grin 4 Problem 3.9 3.9 The torques shown are exerted on pulleysA and B . Knowing that each shafi is . solid, determine the maximum shearing stress (a) in shaft AB, (b) in shafi BC. T“ = 1300 :\ - m , 30mm ‘fi :SooN-MJ d=0.osom J ¢:0.0I$'»\ , T,_;=4l.)()_’\i»m 3 = 3.3:- : 4”“) 39°) 1rc3 -n (mom-)1 sassswo‘ Pa. .- 5“; MpgL .. 46 mm (ugh-H BC? T“: 300 +Hoo -- 700 Nam = T5. = 3.3; =__(2><7°°L "" J we: 17(o.o23)3 2' 3C.CZGX}O‘ P4 36.€ MPa. 4 A = 0.0%.”) c: 0.023 m 7.1. Prob|em 3.17 3.17 The solid shafi shown is formed of a brass for which the allowable shearing sIIess is 55 MPa. Neglecting the effect of stress concentrations, determine the smallest diameters d“ and (13¢ for which the allowable shearing stress is not exceeded. TB = 1200 N - m " M =6'S'MPa : 55am" Pa 2T d K a - —-— = . 3 c'=‘ AB B , T‘C 750mm\l\d3 500 7:3 '= l200"‘f'00 1': 800 “M TC = 400 N - m 3 (2.)(800 _ _3 V FCSSYIO" - 1!.005’10 M: 21.0", Minimum 3A3 = 2C = 4-2.0 mm 4 Ska‘r‘l' BCJ TBc: '+0C> N-Im -3 (23 4003 -s Calm) = 16.667540 9» -: JG‘G‘I m» m§ntimomaec= QC 7' 53.3mm ‘ ...
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