NAME: 13/12/2013

FAll2013 MSE 221 MIDTERM ii 3 PROBlEMS 90 MINUTES

1) Determine the force in members HI, FI, and EF of the truss, and state if the membersare İn tension or cornpression,

K J i

4 kN .5kN8kN 6kN

J \0 t~

4' 2 t 5 tır T ı·g T 6'~!O~$:/' JI;:; ()

~~_:: ) 2 ~ f k AfJ

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tr-If .Pt "J. :5 T J L, J 9) L ::-O ..- 2 J /. kIJ L [D Ml,i?r-e .s.s, c (1 )

rf(r::--II' if'

2) For the following problem, obtain the internal shear and(distance from point A) Use th 1 moment as a function of x_ . ese resu ts to plot the shear and moment diagrams.

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B

3,m >1

Gy;(), ST g;:i" 5 - f3;:lK; 4 z: U

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,r=!,ı 5f,-"""

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J- 6 ,.-v -::0 V = L 625 Lt<-!

Z: i1A -:=-0 6 -a 5 'i- V.,..x - f!7 ;: U n7:::. 3 -t 2, 62.::; 'x

-- - -l-<,.x<4 i .L .t.L.tJ~ı§1-

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3) The assembly consist oftwo A-36 steel (E=200 GPa) rods and a rigid bar BD. Each rod hasa diameter of 20 mm. If a force of 50 kN is applied to the bar as shown, determİne the verticaldisplacement of the load (displacement atpoint E).

0.600

i1--0,375 !.tı o.m !ll

r

E D

]0.9 m

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([,301

, SOkN

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f!y s: :5t fSlıu

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I~L~.=--f}E

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