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985_Mechanics Homework Mechanics of Materials Solution

985_Mechanics Homework Mechanics of Materials Solution - *8...

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Unformatted text preview: *8. 72 Knowingflmt the structural tube shown has a uniform wail thidmms of 0.3 in., determine the principal stresses, principal planm, and maximum shearing sums at (a) point H, (b) point K. PROBLEM 8.72 SOLUTION A‘l’ “H18 sac+rlou con+afnfnfi ‘aoin'i's H M K V = 0; kfps M =(q)(l9) = 70 ka'P- in. T = (9Y3— 0.15) '- 25..“ ku'P- in To raion? CL =(517)(3.“7) = 2|.o‘15n‘ T - 25455 2.017 ks; 21:0. ‘ (imam—(21.04:) TMnSVewse slnecm -‘ = (3)000) - (2.730.?)(0353 :' 2,073.5- in":3 I , gig-30433.. 115(5...\(3_q\3 = H.932 an“ V09 9 (2.0983) _ ‘ TH=O ficlt =W) - 4.398 ks. . . Mc_ ‘10)(2) _ . = Bewalmfl- GH = T — W - 12.576 ks: 6} D ..> (a) Pair} H -‘ 6'; =' 42%: 6183 hi R =J(12-§19)‘+(2.oz7)‘ _— 6.607 ks; 1" ”1.576 ks; 6...“? Q“ 1? ___ may k5; ——+ 2,0171%; 6m a GC— R -- - 0.52 ksi +0» 29 = £3 = - 0.322% e,” — 8.9“) 21.? 1’...“ w 2 '5' 6.6! k3; ILL] ’1’? 2.0174 4.39% «.- G325 ks: 6mm: 6.43 Itsn‘ ISL 6...». s «.45 la; 9? = 2%: 95° LALL N "2 6. ”3 ‘05? Laws: ...
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