Livro Hibbeler - 7ª ed Resistencia Materiais (Livro)

RESPOSTAS 615
7.70.
7.71.
7.73.
7.74.
7.75.
7.77.
7.78.
7.79.
7.81.
7.82.
b( 6hlh2 + 3h2b - 8hi)
e=
2h3 + 6bh2 - (h - 2h!)3
e = O
b( 6h1h2 + 3bh2 - 8hi)
e=
(h + 2ht)3 + 6bh2
e= 43,30 mm
e= 70 mm
2v'3
e= 3 -a
qA = O, qmáx = 375 N/m
qmáx = 84,85 kN/m
h=171 mm
4r( sen a - a c os a)
e=
7.83. e= 2r
2a - sen 2a
7.84. F c = 0,987 kN, F D = 6,906 kN
7.85. V máx = 20,37 kN
7.86. Vmáx = 3,731 kN
7.87. qA = 0, q8 = 1,21 kN/m, qc = 3,78 kN/m
7.89. qA = 145 kN/m, q8 = 50,4 kN/m,
Tmáx = 17,2 MPa
7.90. TA = 1,335 MPa, Te = O MPa
7.91. Ts = 1,781 MPa
7.93. VAB = 49,78 kN
Capítulo 8
8.1. t = 18,8 mm
8.2. t0 = 18,875 m
8.3. Caso (a): u1 = 16,67 MPa, u2 = O
Caso (b): u1 = 16,67 MPa, u2 = 8,33 MP a
8.4. u1 = 28,88 MPa, u 2 = 14,44 MPa
8.5. p = 36,0 MPa
8.6. u1 = 4,2 MPa, u2 = O
8.7. u1 = 4,2 MPa, u2 = 2,1 MPa
8.8. u1 = 13,33 MPa, o= 0,0422 mm,p = 0,199 MPa
8.9. <Te = 19,69 MPa
8.10. s = 400 mm
8.11. s = 833,33 mm
8.13. or =
prt
--=-"'--
1 E(r0 - r;)
8.14. () = 547
8.15. P = 1,756 kN
8.16. O"máx = 239,2 MPa
8.17. O"sup = 17,36 MPa (T), O" inf = -8,10 MPa (C)
8.18.
8.19.
8.21.
8.22.
8.24.
8.25.
8.26.
8.27.
8.28.
8.29.
8.30.
8.31.
8.33.
8.34.
8.35.
8.37.
8.38.
8.39.
8.41.
8.42.
8.43.
8.44.
8.45.
8.46.
8.47.
8.49.
8.50.
8.51.
8.52.
uA = 4,63 MPa (T), u8 = -8,10 MPa (C),
TA = 5,21 MPa, Ts = O MPa
u A = 123 MPa, u8 = 62,5 MPa
O" máx = 53,3 MP a (C), u rnín = 40,0 MP a (T)
d = 100mm
uAB = 5,19 MPa (T), uvc = 312,73 MPa (T)
( uc)rnáx = 11,0 MP a, ( uc)mín = O
u A = 0,318 MPa, TA = 0,735 MPa
u8 = -21,7 MPa, Ts = O
T= 9,331 kN
T= 9,343 kN
uA = -0,200 MPa (C), u8 = -0,600 MPa (C)
uA = -0,200 MPa (C), u8 = -0,600 MPa (C),
uc = -0,200 MPa (C), uv = 0,200 MPa (T)
() = 0,215°
R1 = 15,63 kN,R 2 = 14,38 kN, uA = -70,98 MPa,
us = 20,4 MPa, TA = 0,00 MPa, Ts = 7,265 MPa
u A = 359 MPa (T), u8 = 71,7 MPa (T),
TA = 4,48 MPa, Ts = 5,92 MPa
uE = 1,01 MPa (C), up = 27,7 MPa (C)
TE = 1,96 MPa, Tp = O
a = 61,9 mm, u = 15,5 MPa
u A 0,444 MPa (T), TA = 0,217 MPa
uA = -23,78 MPa (C), TA = 0,00 MPa
u8 = 51,84 MPa (T), Ts = 0,00 MPa
uc = 113,9 MPa (T), uD = 868,5 MPa (T),
( Tc)xy = -360,8 MP a, ( TD)xz = 434,3 MP a,
( Tc),2 = O , ( TD)xy = O , ( Tc)yz = O ,
(TD)yz 0 =
up = -125,7 MPa (C), uE = -868,5 MPa (C),
( Tp)'-1. = 467,2 MPa, ( TÚrz = -434,3 MPa,
( Tp)xz = O , ( TE)xy = O, ( Tp)yz = O ,
(TE)yz 0 =
u A = 11,9 MPa (T), ( Txy)A = -0,318 MPa,
(Txz)A = O
u B = 7,16 MP a (C), ( Txc) B = 0,531 MPa,
(Txy)B = 0
uc = 52,1 MPa (C), Te = O
u A 107 MPa, TA = 15,3 MPa,
us = O, Ts = 14,8 MPa
uc = 107 MPa (C), Te = 15,3 MPa,
uD = O, TD = 15,8 MPa
uA = -262,0 MPa (C), TA = 0,00
uA = 0,0 MPa, Ts = 3,14 MPa