Unformatted text preview: 2.12] The rigid bar ABC is supported by two links, AD and BE, of unifomi 37.5%»
mm rectangular cross section and made of a mild steel that :is aSSumed to be
elastoplastic with E = 200 GPa and oY = 250 MPa. The magnitude of the force Q
applied at B is gradually increased from zero to 260 kN. Knowing that a = 0.640 m,
determine (a) the value of the normal stress in each link, (b) the maximum deﬂection
of point B. FM PROBLEM 2.123 *2.123 Solve Prob. 2.121, assuming that the magnitude of the force Q applied at B is
gradually increased from zero to 260 kN and then decreased back to zero. Knowing
that a = 0.640 m, determine (a) the residual stress in each link, (b) the ﬁnal deﬂection
of point B the residual stress in each link. Assume that the links are braced so that
they can carry compressive forces without buckling. SOLUTION See Sopuh'om "to PROBLEM 2.32! 'Por 'Hte normmp siresses {m amok jinl’
and ‘Hne alePpeo'i‘t‘w: oi: For4+ B 0631» foadt‘nj 6“, = 250 no“ “Pa 635 = name XIO‘ Pa.
6 3e, : 611.53 xzo‘ m Tine epasir'c emaJYsa‘s aiUEM in Hue soﬁuiiom‘ib PQOBLEM 2.!2] qrplru
+0 +Lle DuPont/[Incl = 317. oak/0‘ 9’ Q _ 290 x103 c :._._.______._ — .........—_._ = y o‘
3'7.06 ”to; SULOG Ylob 82003 I = 310.4. no" 9 = (3:0.cx!o°’)(3xo.oawlo“)= 25s.7w:o" Pot
Sds I23 «10’ a = (Izexlothzaoeswd‘) = toasewo" Pa. 33' 0.1.340 9' = 524.32 x/o"m (0.) Qes (0‘ OJ s+rasa as 63s m = 61.3  6A.; '= 250 “10"” 259.70 no“ 2 — 3.70 xro‘ Pa.
J = —H.‘7o HPet. Scam: 65563; = Izmsvzoﬁ rosesxro‘ = H.6‘l wo‘PQ
= l‘i.3'i ”PA is) 33 P = $3 — 53' = cuss >40"— 524.32 no"
° = acnwuf‘m = 0.0%? m... ...
View
Full Document
 Summer '10
 STAFF

Click to edit the document details