Homework_sec_2.2 - 2.2-8 The three-bar truss ABC shown in...

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Unformatted text preview: 2.2-8 The three-bar truss ABC shown in the figure has a span L = 3 m and is constructed of steel pipes having cross—sectional area A = 3900 mm2 and modulus of elas- ticity E = 200 GPa. A load P act horizontally to the right at f732> o4 M; 74qu joint C. (See the figure on the next page.) (a) IfP = 650 kN, what is the horizontal displacement ofjoinl B? (b) What is thefimztximum permissible load Pmax if the displacement ofjoint B is limited to l.5 mm? _,. //S‘M __ flCOSW‘QMQ/m m d F“ lo?- ‘r—‘T": [ISTW- '1’ L15 54/3 0‘) 1?) COO/§m>: E =0: Flies/by? “(P/2 FACT-.707! rP g?! :0: FAQ JP 4- nowhwrvs‘” . \ Fit/5: (9/; ga- tsastarfi’ém-l _= ,OOIQSM. E (10035! m‘>(QooG—?a) 42933;.” magma") (200633 J o.— [aZsS‘Mfl'M— —% P:7&1flM L. 2.2-! An aluminum 'I."-']t‘E having a (“HITHEICI d' ‘ 2 mm and lungllh I. -- 3.3 m Er: suhjuclcd In CI tensile Inncl a” (sun: figum}. The aluminum hm; mudulm nl' elasticity E ? ":5 fill-L [t' “1:: maximum permi-mihlc. DIflngulinn nr‘ Ilka win: is N43 «Mir :2 C‘ if: u. 1",ng 4”" J 3.“ mm and [In- Elllnwablu Stars: in tensinu is 6.1] Mi’u, what is the FIHIquhE-r: Imnj P " JI'II‘IJG. ' F‘- Q 5mm."- 3mm=v0¢3m $19!. _|-"—"—' r?- c: PHUB. 2.2-5 ; P: —___gfl 5:. .oofim‘)(§.ffi’flxmw) (TFGPQ L 3,381“ #:géaoflmj-L: ENE? x 631 f P: HELL/u” Q mama: arm-Ia #_ i? “r ’T r+7: T24 :-(aoflPa)(5.w2xs5§m9:mans-Ar films-{- {,4 96 /€£$€r .54: wzwa L/pkfiwf-F : 30 :ll raga-315*“: 12-11 .35. I‘Lntlnw. circular. 31ml Irl‘flurnn {E = 3{].[H_]U km} is; subjccted to a cmnpressiw 1mm P. as: shnwn in the tigun'. Thu i't'llLllTIll. has Itnglh I, =- Hi] I'I and outside dinm- * ’/ clcr d = 1.": in. Thu Imd P = 35 k. “9 cfi-l’ffi“ MWS 9-“ N-Efré II' [he ullnwflhl: mnmrcwivu almsx 1:: TUUU p51 and “1:: nllmu-nhlu fiht‘fl'llrr'ling L‘IF 1h: I:LI1IJ|TI.:1 i5 EH12 i1I.I what in Ihu minimum required wall alum-mews. a.) T: *mchPS‘E if??? L I'I.'I' r' I L%*_-:/ : M _ f2! Iq’é—‘ib __d'___.. 755‘ OPS: Fnaa.2.2~11 T 7- .. 3:2,:ng 7,5151— 4-] AL (gamma) (9.94:3 ._. ur.——-'—-~—'——-- -—- 3m; ’ 7'" (-DQJQ)(EGKTDGPSE) I m 23.0;L : §[(zn)‘-o/f] _ cafe-J- dag: (3.2?04; {‘_+——"':.£}30ml j. 1.. .r’lus'l'" (ASE ffargir- m‘r' Mr: Vfi-dmés é F Ir}! : ' ...
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  • Spring '08
  • Sayles
  • Trigraph, permissible load Pmax, CI tensile Inncl, nllmu-nhlu fiht‘fl'llrr'ling L‘IF, In- Elllnwablu Stars

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