Livro Hibbeler - 7ª ed Resistencia Materiais (Livro)

RESPOSTAS 607
1.58.
1.59.
1.61.
1.62.
1.63.
1.65.
1.67.
1.69.
1.70.
1.71.
1.72.
Treliça A:
uAB = 85,47 MPa (T), uAE = 63,376 MPa (C)
Treliça E:
uEB = 38,462 MPa (T), uED = 68,376 MPa (C)
Treliça E:
u8e = 188,034 MPa (T), u80 = 149,573 MPa (C)
uAB = 2,137 MPa (T), uAE = 1,709 MPa (C),
uEB = 0,962 MPa (T), uED = 1,709 MPa (C),
u8e = 4,701 MPa (T), u80 = 3,739 MPa (C),
Padm = 29,78 kN
Tméct= 29,709 MPa
Tméct= 12,732 MPa
Tméct= 93,901 MPa
u8 = 2,08 MPa, ue = 55,1 MPa
Nos pinos E e C: T8 = Te = 324 MPa,
No pino A: TA = 324 MPa
8 = 75,96°
Tpino = 44,762 MP a, Ubarra = 70,736 MP a
u = p sen2 8 Tme'd = _!_
A ' 2A
sen 28
cos (8)
use =
( 2W
J
1T.
d5 · sen(45° + 0,58)
1.73. u = (47,5 - 20,0x) MPa
1.74. u = (32,5 - 20,0x) MPa
1.75. u = (238 - 22,6z) kPa
(rr,;r")
1.77. r= r1e 2P z
1.78. u = 49,5 kPa
2
1.79. u = m w
8A
(L2 - 4x2)
1.81. h= 75 mm
1.82. dAs = 6,02 mm, dev = 5,41 mm
1.83. d = 5,71 mm
1.84.
1.85.
1.86.
1.87.
1.89.
1.90.
1.91.
1.93.
1.94.
1.95.
a= 7,07l mm
P = 113,14 kN
d = 15 mm,d = 10mm
d = 12,166 mm, d = 21,913 mm
P = 2,40 kN
FAB = 5,818 kN, W = 1,739 kN
FAB = 114,478 kN, Tcabo = 103,491 kN,
do = 30mm
d1 = 44,6 mm, d 3
= 26,4 mm, t = 15,8 mm
aA = 80 mm,a8 = 120 mm
Padm = 3 kN
1.96.
1.97.
1.98.
1.99.
1.100.
1.101.
1.102.
1.103.
1.104.
1.105.
1.106.
1.107.
1.109.
1.110.
1.111.
1.113.
1.114.
1.115.
1.117.
1.118.
1.119.
Capítulo 2
Ase = 1.834,416 mm2, dA = 41,854 mm,
d8 = 29,595 mm
d 2
= 35,7 mm, d 3
= 27,6 mm, d1 = 22,6 mm
t = 22,5 mm
a A = 90 mm, a8 = 110 mm
Padm = 3,67 kN
Em A:FS = 1,02
Em AB: FS = 1,11
w = 6,632 kN/m, w = 7,791 kN/m
P = 31,23 kN, d = 15,29 mm
P = 105,00 kN, t = 20,00 mm, w = 62,50 mm
d 8 = 6,11 mm, d111 = 15,4 mm
x = 0,909 m
w = 7,18 kN/m
w1 = 1.066,67 kN/m, w2 = 1.600,00 kN/m,
d = 19,073 mm
w1 = 366,52 kN/m, w2 = 549,78 kN/m
d = 13,8 mm, t = 7,00 mm
Ua-a = 200 kPa, Ta-a = 115 kPa
Segmento AD:
N0 = 6 kN, V0 = -3,13 kN,M0 = -1,153 kN·m
Segmento CE:
Nv = -10 kN, V0 = OkN,M0 = OkN·m
T méd = 79,6 MPa
Segmento BD:
N0 = -10,8kN, V0 = OkN, M0 = 3,24 kN·m
Segmento FE:
VE = 2,7 kN,NE = 21,60 kN,ME = 30,24 kN·m
u80 = 140 MPa, u AD = 285 MPa
u40 = 3,98 MPa, u30 = 7,07 MPa,
Tméd = 5,09 MPa
2.1. E = 0,1667 mm/mm
2.2. E= 0,0472 mm/mm
2.3. ECE = 0,00250 mm/mm, Eso = 0,00107 mm/mm
2.4. EeE = 0,00250 mm/mm, Esv = 0,00107 mm/mm
2.5. ( EeE)méct = 1,79(10-3) mmjmm,
(Esv)méct= 1,43(10-3) mm/mm
2.6. l:.p = 11,2 mm
2.7. EAe = EAB = 0,00578 mmjmm
2.9. 1:.0 = 4,38 mm
2.10. EAB = 0,0398