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330_Mechanics Homework Mechanics of Materials Solution

# 330_Mechanics Homework Mechanics of Materials Solution - .L...

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Unformatted text preview: __.L / 1 i i [::4]4 "[" ] ﬂ 44—SH‘ L J PROBLEM 4 48 4.47!“ 4.48A6 X lO—in. timbcrbomn hasbomshmgthcncdbyboiﬁngwitﬂ'le . ' steel straps shown. The modulus ofelasticity is 1.5 x 10‘ psi for the wood and 30 i X io‘ psi for the steel. Knowing that the beam is bent about a horizontal axis by a . couple of moment 200 kip-in, dctenninc the maximum stress in (a) the wood, (b) the steel. ' SOLUTION " Use Wood as He re-F'ereuce racism“! Y1 = [.0 in wood n = Es/Ew = 30/14." = 20 .3. 5+"! Tra. In S'Fof‘m ea? SEdj’a'o In The neu'ich cum“: pies 3.667 in. «Love Me [NH-ow. I. ’ %b.h?+ HAWL -‘ Jifkiﬂoisucoiooss)‘ =- coc.7 in“ ( I I: = .3 "' %“bzh:+n.Azd: ’ §§(%)(2)3+ ('6‘)(:e.657iz = ”L? 3..“ I = I.»I.+I, =- 230 an“ (a) Wood : n :- Lo, 3/ - “9-3.“? = 6-333 .3. l s: - "—11“ = ~L——1§—§3§J"°“§;‘; ‘- -.- - [.524 ks.‘ I J 7- -3.“7 in b- = .m ”W ._. me? ks: I 830 ...
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