l 0 = =
f 0 = 1,4 > l 0/15;
= 20,26 .
r = l 20/(8 f 0) + f 0/2 = 202/(8×1,4) + 1,4/2 = 36,4 .
. 48.
φ
sin (φ/2) = l 0/(2 r) = 20/(2×36,4) = 0,2747; φ/2 = 1557 '; φ = 3154 '.
tg α = f /(0,5 l) = 16/(0,5×24) = 1,333; α = 5308 '.
φ0 , ,
φ0 = 900 - α - φ/2 = 90 - 5308 ' - 1557 ' = 20 55 '.
. 49.
(. 49). , , .
S 1 = S /5 = 20,26/5 = 4,05; φ1 = φ/5 = 3154 ' /5 = 623 '.
, :
x 0 = r cos φ0 = 36,4cos 2055 ' = 36,4×0,934 = 34 ;
y 0 = r sin φ0 = 36,4sin 2055 ' = 36,4×0,357 = 13 .
:
xn = x 0 - r cos φ n; yn = r sin φ n - y 0,
φ n = φ0 + n φ1 (n - ). . 28.
L = 2 x , 50, x 50 y 50 x 2 + y 2 = x 20 + y 20, x 0 y 0:
28
n φ1 | φ n | cos φ n | sin φ n | r cos φ n | r sin φ n | xn | yn | |
2055 ' | 0,931 | 0,357 | 13,00 | |||||
623 ' | 2718 ' | 0,889 | 0,459 | 32,36 | 16,71 | 1,64 | 3,71 | |
1246 ' | 3341 ' | 0,832 | 0,555 | 30,28 | 20,20 | 3,72 | 7,20 | |
1909 ' | 4004 ' | 0,765 | 0,644 | 27,85 | 23,44 | 6,15 | 10,44 | |
2532 ' | 4627 ' | 0,689 | 0,725 | 25,08 | 26,39 | 8,92 | 13,39 | |
3155 ' | 5250 ' | 0,604 | 0,797 |
, y' = x / , y' = tg 50 = 1,192, 2,42 x 250 = 1883; x 50 = 27,9 ; y 50 = = 23,4 ;
x = l /2 - (x 0 - x 50) = 12 - 34 + 27,9 = 5,9 ;
y = y 0 + f - y 50 = 13 + 16 - 23,4 = 5,6 ;
tg α1 = y / x = 5,6/5,9 = 0,9492; α1 = 4330 '.
β. y' x x = x 0 - l /2 = 34 - 12 = 22;
β = arctg 0,7586,
β = 3711 ' > 15, c 1 . 5 II-6-74 α1 = 4330 ', .. c = 0,53 ( . . ., 1983.)
|
|
, , , . . 50.
1 2 n ( II-6-74, . 2.2) k = S /(0,5 l) = 20,26/12 = 1,69, . . 29.
. 50. ,
( ), 2 , ( ) - 4,1 /, 1 - 0,4 / - 48 . , , . 30.
29
1 2 , | , /2 | , n | , /2 | ||
-1750 | 0,167 | 1,69 | 0,282 | 1,1 | 0,310 |
0,15 ´ 0,13 1,5 | 0,043 | 1,69 | 0,073 | 1,1 | 0,081 |
0,210 | 0,355 | 0,391 |
30
, | , n | , | |
9,23 | 1,2 | 11,07 | |
: | |||
1,2 | 28,8 | ||
0,9 | 1,4 | 1,26 | |
24,9 | 30,06 | - |
, , l = 24 :
P = 4 Pa / l 2 = 4×4,1×10/242 = 0,285 /,
P = 4,1 ; a - , 10 .
c = 0,53
P = 1×0,53 = 0,53 /2.
, . 2.
g = (g + P + P )/[1000/(K l) - 1] = (0,356 + 0,53 + 0,285)/[1000/(4×24) - 1] = 0,124 /2
K = 4.
:
q = g + P + g = 0,356 + 0,285 + 0,124 = 0,765 /2.
( II-6-74, . 5.7)
q / p 0 = 0,765/1 = 0,765,
n = 1,5 1 2
q = 0,53×1,5 = 0,8 /2.
1 :
q = (0,391 + 0,124×1,1)4,5 = 2,37 /;
( )
q = 0,8×4,5 = 3,6 /.
, , II-6-74
|
|
p = kcp 0 n,
k - , , . 7, . 6.5. ( 10 k = 0,65, 10 - k = 0,9); c - , f / l = 0,67 c 1 = 0,7; c 2 = -1,2; c 3 = -1,2, c 4 = -0,4 (. 3 . 8); p 0 - , I 0,27 /2 (. . 6, . 6.4); n = 1,2 - (. . 6.18).
, y = 0,7 f = 0,7×16 = 11,2 , 3 4 10,44 13,39 . 1 :
p 1 = 0,65×0,7×0,27×1,2×4,5 = 0,66 /;
p 2 = p 3 = -0,9×1,2×0,27×1,2×4,5 = -1,575 /;
p 4 = -0,65×0,4×0,27×1,2×4,5 = -0,38 /.
, :
P 1 = p 1×3,2651 = 0,66×3,26×4,05 = 8,714 ;
P 2 = P 3 = p 2×1,7451 = -1,575×1,74×4,05 = 11,1 ;
P 4 = p 4×3,2651 = 38×3,26×4,05 = 5,02 .
: ; , , (. . 50).
V = V = q l /2; H = q l 2/(8 f).
α = 50:
V = V = q x ; H = q x (l - x )/(2 f),
x - 50, 5,9 (. . 50).
:
V = q x (l + x )/(2 l); V = q x (l - x )/(2 l); H = Vl /(2 f).
:
V = [ P 1 a 1 - P 2(a 2 + a 3) - P 4 a 4]/ l;
V =[ P 1 a 4 - P 2(a 3 + a 2) - P 4 a 1]/ l;
H = (V 0,5 l - P 1 b 1 + P 2 b 2)/ f;
H = (V 0,5 l + P 4 b 1 + P 3 b 2)/ f,
P 1, P 2, P 3, P 4 - ; a 1, a 2, a 3, a 4 - ; b 1, b 2 - , . .
a 1 = a sin (3,37φ1 - β1) = 16,4sin 218 ' = 16,4×0,3606 = 5,91 ;
a 2 = a sin (0,87φ1 - β1) = 16,4sin 510 ' = 16,4×0,0901 = 1,48 ;
a 3 = r sin (4,13φ1) = 36,4sin 2622 ' = 36,4×0,4441 = 16,2 ;
a 4 = r sin (1,63φ1) = 36,4sin 1025 ' = 36,4×0,1808 = 6,6 ;
b 1 = r sin (3,37φ1) = 3,64sin 2131 = 36,4×0,3668 = 13,35 ;
b 2 = r sin (0,87φ1) = 36,4sin 533 = 36,4×0,0967 = 3,52 ,
β = arctg [(x 0 - l)/ y 0] = arctg [(34 - 24)/13] = 3734 ';
ψ = 90 - (φ0 + φ) = 90 - 20 55 ' - 3154 ' = 3711 ';
β1 = β - φ = 3734 ' -3711 ' = 023 '.
31
, / | , | ||||
V | V | H | HB | ||
, | 2,37 | 28,4 | 28,4 | 10,7 | 10,7 |
11,1 | 11,1 | 6,9 | 6,9 | ||
, : | |||||
50 | 3,6 | 21,1 | 21,1 | 11,9 | 11,9 |
13,1 | |||||
- | 18,8 | 18,8 | |||
() | - | -7,4 | -7 | -10,4 | 1,4 |
32
, | , × | |||||||
x | y | gn | P | P | P | P | P | |
1,65 | 3,69 | -0,5 | -9 | -9,1 | -19,9 | -7,1 | ||
3,72 | 7,19 | 5,6 | -13,4 | -7,1 | -23,6 | -8,3 | ||
6,15 | 10,44 | 17,6 | 17,9 | -13,4 | 5,5 | -11,8 | -3,8 | |
8,92 | 13,39 | 15,4 | 22,2 | -8,9 | 14,6 | 15,9 | 6,1 | |
. 31, - . 32 Mx = M 0 x - Hyx, M 0 - .
|
|
, ×, . 33
Mn = Vxn - Hyn Mbn;
M'n = Vxn - Hyn Mb'n,
Mbn Mb'n - , n:
Mb 1 = - P 1 r sin (φ1/2)3,26; Mb' 1 = P 4 r sin (φ1/2)/3,26;
Mb 2 = -2 P 1 r sin φ1/3,26; Mb' 2 = 2 P 4 r sin φ1/3,26;
Mb 3 = -3 P 1 r sin (1,37φ1)/3,26; Mb' 3 = 3 P 4 r sin (1,37φ1)/3,26;
Mb 4 = - P 1 r sin (2,37φ1) + 0,74 P 2 r sin (0,37φ1)/2;
Mb' 4= P 4 r sin (2,37φ1) + 0,74 P 3 r sin (0,37φ1)/2;
Mb 5 = - P 1 b 1 + P 2 b' 2; Mb' 5 = P 4 b 1 + P 3 b 2.
33
Vxn | - Hyn | Mbn | Mn | Vxn | - Hyn | Mbn' | Mn' | |
-12,1 | 38,6 | -5,4 | 21,1 | -11,5 | -5,2 | 3,1 | -13,6 | |
-27,5 | 74,9 | -21,6 | 25,8 | -26 | -10,1 | 12,4 | -23,7 | |
-45,5 | 108,6 | -44,5 | 18,0 | -43,1 | -14,6 | 25,6 | -32,1 | |
-66 | 139,3 | -76,5 | -3,2 | -62,4 | -18,7 | 53,8 | -27,3 | |
-88,8 | 166,4 | -77,3 | -84 | -22,4 |
34
, ×, | , × | ||||||||
-0,5 | -9 | -9,1 | 21,1 | -13,6 | -7,1 | -19,9 | 22,5/-41,4 | ||
5,6 | -13,4 | -7,1 | 25,8 | -23,7 | -8,3 | -23,6 | 40,3/-50,9 | ||
17,6 | 17,9 | -13,4 | 5,5 | 18,6 | -32,1 | -3,8 | -11,8 | 50,5/-46,8 | |
15,4 | 22,2 | -8,9 | 14,6 | -3,2 | -27,3 | 6,1 | 15,9 | 53,4/-17,2 | |
. 34 , , , . n = 0,9.
. 34, 4, - 2. 4 2
N = Q sin φ n + H cos φ n.
4
x = 8,92 ; φ4 = 4627 '; sin φ4 = 0,725; cos φ4 = 0,69.
:
Q 1 = 28,4 - 8,92×2,37 = 7,3 ;
Q 2 = 11,1 ;
Q 3 = (13,1 - 3,6×2,82)0,9 = 2,7 ;
Q 4 = 30×0,9 = 27 .
4 Q = 48,1 .
H = 10,7 + 6,9 + 0,9(6 + 18,8) = 39,9 .
|
|
: N = (48,1×0,725 + 39,9×0,69) = 62,4 .
Nb 4 = V sin φ4 + P 1sin (2,37φ1) + 0,74 P 2sin (0,37φ1) + H cos φ4.
. 31 V = -7,4 ; H = -10,4 .
:
P 1 = 8,71 ; P 2 = -11,1 ; 2,37φ1 = 158 ';
sin (2,37φ1) = 0,261; 0,37φ1 = 222 '; sin (0,37φ1) = 0,0413,
Nb 4 = -0,9(-7,4×0,725 + 8,71×0,261 - 0,74×11,1×0,0413 - 10,4×0,69) = 9,5 .
4 :
N 4 = N + Nb 4 = -62,4 + 9,5 = -52,9 .
2
x 2 = 3,72 ; φ2 = 3341 '; sin φ2 = 0,555; cos φ2 = 0,832.
4:
Q 2 = 69,5 ;
H = 39,9 ;
N = -71,8 ;
Nb 2 = 4 ;
N 2 = -67,8 .
ξ, II-25-80, . 6.27, , , 4 2.
5. X 5 = 12 ; φ5 = 5250 '; sin φ5 = 0,797; cos φ5 = 0,604.
:
Q 5 = -7,3 ;
H = 39,9 ;
N = -18,2 ;
Nb 5 = -12,3 ;
N 5 = -30,6 .
2 4:
M 2 = -50,9 ×; N 2 = -67,8 ;
M 4 = +53,4 ×; N 4 = -52,9 .
2 3,3 . γ n = 0,95.
(1/40 - 1/50) l = (1/40 - 1/50)2400 = 60 - 48 .
II-25-80, . 3.1 3.2, h ≤ 60 , δ = 3,3 r / a = 3640/3,3 = 1103 > 500 m =1,2; m = 0,96; m = 1, m = 1;
R = R = 1,2×0,96×1×1×13/0,95 = 15,76 .
, ,
β = h / b = 5,5; ξ = 0,65; h = 571 ; b = 104 .
b ´ h = 110 ´ 594 18 33 .
II-25-80, . 4.17, (28) :
N / F + M / W = 52,9×103/65,3×103 + 73,5×106/6,47×106 = 0,81 + 11,36 = 12,17 < 15,76 ,
.. .
. 51. () ()
1 - 12 ´ 100 ´ 200; 2 - 16 ; 3 - 20 200 ; 4 - ; 5 - 12 ´ 300 ´ 610; 6 -
, ; (33), . 4.18, II-25-80.
1,5 , ,
l = 2×150 < 140 b 2/(hm ) = 140×112/(59,4×0,96) = 312 ,
.. , - , , n = 1 (33) II-25-80. φ, φ K , K K N, ,
N /(F φ R ) + M /(W φ R ) = 67,8×103/(653×102×0,6097×15,76) + 71,4×106/(0,9069×6,47×106×15,76) = 0,11 + 0,77 = 0,88 < 1.
, .
. 51.
6.44. , , .
|
|
. 1.
6.45. II-25-80, . 4.17, 4.18, 6.28 6.30 :
) ;
) ;
) .
4 .
6.46. ; .
, . 0,3 , - . 0,4 .
6.47. 15 %.
6.48. (. 52) . 4 .
. :
)
c = c n,
c = 128 / - ; n - ;
)
δ = 1/ c;
)
Δ = δ N .
N = 2 M / ; M - ; - , ;
) N = c Δ;
)
N = N k ≤ 2 T, (49)
k = 1,3 - , ; T - , II-25-80, . 5.13.
. 52.
1 - ; 2 - ; 3 - ; 4 - ; 5 - ; 6 -
(49) , , ;
)
N n ≥ N .
4 .
. 52, 20 .
6.49. , , (. 53), . .
. , , .
II-25-80.
. 53.
1. 18 , 3 .
. ( .). , 70 ´ 150 1,5 . ( ) 2- 3- δ = 33 .
.
i 1 = 0,25, - i 2 = 0,2; - , (. 54).
g = 0,266 /2 P = 1 /2. :
g = (g + P )/[1000/(K l) - 1] = (0,266 + 1)/[1000/(7,5×17,64) - 1] = 0,194 /2.
. 54.
. 55.
:
g = (g + g ) nb = (0,266 + 0,194)/1,1×3 = 1,52 /;
P = P n b = 1×1,6×3 = 4,8 /.
, .
II q 0 = 0,35 /2,
Pib = q 0 kcinbb ,
k = 0,65 - , , II-6-74, . 7.; ci - , II-6-74, . 8;
c = +0,8; c 1 = -0,228; c 2 = -0,4; c 3 = -0,5;
nb = 1,2 - ;
b = 3 - .
c 1
H / l = 5,45/17,64 = 0,308 γ = 14,2;
P 1 b = 0,35×0,65×0,8×1,2×3 = 0,66 /;
P 2 b = 0,35×0,65×0,5×1,2×3 = 0,41 /;
P 3 b = 0,35×0,65×0,4×1,2×3 = 0,33 /; ( );
P 4 b = 0,35×0,65×0,228×1,2×3 = 0,19 /; ( ).
, , P 3 b, = 0,26 /. . 54. 140 ´ 363 ,
λ = l 0/(0,289 hk) = 545×2,2/(0,289×36,3) = 114,4 < [λ] = 120,
hk / b ≈ 2,5, .
(. 55) . 6.16 - 6.19:
γ = arctg i 1 = arctg 0,25 = 14;
φ = arctg i 2 = arctg 0,2 = 11,3.
l 1 = 0,2 l = 0,2(18 - 0,36) = 3,53 . :
r 0 = l 1/(2sin φ) = 3,53/(2sin 11,3) = 9,01 ;
r 0/δ = 9,01/0,033 = 274 > 250, .. m = 1.
b = 140 , h = 1200 , 1/15 l, h 1 = 1022 , h 0 = 581 .
. 56.
, ,
EI = EI cos2 θ k,
I - ; θ - ; k = 0,15 + 0,85β - II-25-80, . 4, . 3.
(. . 56):
V = V = ql /2; V = U = 5 qS 2/cos2 θ k /[8(H 2 k + f 2 k )];
M = M = 5 qS 2 Hf cos2 θ k /[8(H 2 k + f 2 k );
ME = ql 2/8 - 5 qS 2 f 2cos2 θ k /[8(H 2 k + f 2 k )],
k = EkIkS /(EI H);
P 1 b, P 2 b , P 3 b, ( ):
V = V = P 3 b //(2cos θ);
U = P 1 b H - (P 1 b - P 2 b ) H 3 k /[8(H 2 k + f 2 k )] + 5 P 3 b S 2 f cos θ k /[8(H 2 k + f 2 k )];
U = P 2 b H + (P 1 b - P 2 b ) H 3 k /[8(H 2 k + f 2 k )] - 5 P 3 b S 2 f cos θ k /[8(H 2 k + f 2 k )];
M = P 1 b H 2/2 - (P 1 b - P 2 b ) H 4 k /[8(H 2 k + f 2 k ) + 5 P 3 b S 2 fH cos θ k /[8(H 2 k + f 2 k )];
M = P 2 b H 2/2 + (P 1 b - P 2 b ) H 4 k /[8(H 2 k + f 2 k ) - 5 P 3 b S 2 fH cos θ k /[8(H 2 k + f 2 k )];
M = P 3 b l 2/8 + (P 1 b - P 2 b ) H 3 fk /[8(H 2 k + f 2 k ) - 5 P 3 b S 2 fH cos θ k /[8(H 2 k + f 2 k )].
. 56.
0 ≤ y ≤ H, , :
M = M - Vy;
Q = U; N = V;
P 1 b, P 2 b, P 3 b:
M = M - U y + P 1 by 2/2;
Q = U - P 1 b y; N = V ,
M = M - U y + P 2 by 2/2;
Q = U - R 2 b y; N = V .
0 ≤ x ≤ l /2, :
:
M = V x - qx 2/2 - 2 U fx / l;
Q = (V - qx)cos θ - U sin θ;
N = (V - qx)sin θ + U cos θ;
P 1 b, P 2 b, P 3 b:
M = V x - 3 bx 2/2 cos θ - 2 fx (U - P 1 bH)/ l;
Q = (V - P 3 bx /cos θ)cos θ - (U - P 1 b )sin θ;
N = (V - P 3 bx /cos θ)sin θ + (U - P 1 b H)cos θ.
x
x = lh 0/(2 h 1) = 17,64×0,581/(2×1,022) = 5 .
. 35. . 56.
: ; , n = 0,9. II-25-80.
35
q = 1,52 / | 3 + 4 | 3 + 5 | 3 + 4 + 6 | |||||
P = 4,8 / | ||||||||
M, × | +4,43 | +14 | -9,67 | +6,22 | +18,43 | -5,24 | +22,62 | |
Q, | -0,81 | -2,57 | +3,57 | -2,26 | -3,38 | +2,76 | -5,16 | |
N, | -15,21 | -42,73 | +2,37 | -2,37 | -57,94 | -12,84 | -55,8 | |
M, × | - | - | ||||||
Q, | -0,81 | -2,57 | +0,025 | +0,025 | -3,38 | - | - | |
N, | -13,53 | -42,73 | +2,37 | +2,37 | -56,26 | - | - | |
M, × | - | - | ||||||
Q, | +13,06 | +41,24 | -2,32 | -2,32 | +54,3 | - | - | |
N, | -3,61 | -11,4 | +0,468 | +0,468 | -15,01 | - | - | |
Mx, × | +47,71 | +150,67 | -8,52 | -8,52 | +198,38 | - | - | |
Qx, | +5,75 | +18,17 | -1,02 | -1,02 | +23,92 | - | - | |
Nx, | -2,03 | -6,42 | +0,19 | +0,19 | -8,45 | - | - | |
M, × | +58,66 | +185,25 | -10,34 | -10,34 | +243,91 | - | - | |
Q, | -0,17 | -0,53 | +0,005 | +0,005 | -0,7 | - | - | |
N, | -0,8 | -2,51 | +0,024 | +0,024 | -3,31 | - | - |
, . :
M = 22,62 ×; Q = 5,16 ; N = 55,8 .
b = 140 ; h = 363 ; F = F = 140×363 = 5,08×104 2;
W = W = 140×3632/6 = 3,07×106 3;
l 0 = μ l = 2,2×5,45 = 12 .
3- . II-25-80, . 3. R = R = R = 11× m /γ n = 11×1,2/0,95 = 13,9 .
φ = 3000/λ2 = 3000/114,42 = 0,229;
ξ = 1 - N /(φ R F ) = 1 - 55,8×103/(0,229×13,9×5,08×104) = 0,655;
K = α + ξ(1 - α) = 1,22 + 0,655(1 - 1,22) = 1,08;
M = M /(ξ K ) = 22,62/(0,655×1,08) = 31,98 ×.
-
N / F + M / W = 55,8×103/5,08×104 + 31,98×106/3,07×106 = 11,5 < R = 13,9 .
. 57.
1 - ; 2 - ; 3 - 63 ´ 63 ´ 5; 4 - 20
:
Q = 54,3 ; h = (h 0 - hk tg φ/2)cos φ = (581 - 363×0,1998/2)0,9755 = 531 ; b = 140 .
τ = 3 Q /(2 bh) = 3×54,3×103/(2×140×531) = 1,09 < R /γ n = 1,5/0,95 = 1,58 .
:
l = Q γ n /(bR α) = 54,3×103×0,95/(140×3,2) = 116 ,
R α = R /[1 + (R / R 90 - 1)sin 3 α] = 15/[1 + (15/3 - 1)0,97553] = 3,2 ;
α = 90 - θ = 90 - 12,7 = 77,3.
363 (. 57).
x = 5010 :
Mx = 198,38 ×; Qx = 23,92 ; Nx =-8,45 .
.
:
hx = [ h 0 + x (tg γ - tg φ)]cos θ = (581 + 5000×0,05)0,9755 = 811 .
F = 140×811 = 11,35×104 2;
W = W = 140×8112/6 = 15,35×106 3.
:
λ = l /(0,289 h) = 17640/(0,289×1200) = 51;
φ = 3000/λ2 = 3000/512 = 1,16; N = 0,07 + 0,93 h 0/ h = 0,07 + 0,93×581/1200 = 0,52;
R = R = R = 15 m /γ n = 15×0,9/0,95 = 14,2 ;
m = 0,9 hx = 811 ;
ξ = 1 - N /(φ R F N) = 1 - 8,45×103/(1,16×14,2×140×1200×0,52) = 0,99;
M = M /ξ = 198,38/0,99 = 200,2 ×;
N / F + M / W = 8,45×103/11,35×104 + 200,2×106/15,35×106 = 13,1 < R = 14,2 .
2×1,5 = 3 , ..
l = 3 < 140 b 2/(m h) = 140×0,142/(0,9×0,811) = 3,6 .
.
K M / W = 246×106×0,045/33,6×106 = 0,33 ≈ R 90/0,95 = 0,3/0,95 = 0,32 ,
M = M /ξ = 243,9/0,99 = 246 ×;
W = bh 2/6 = 140×12002/6 = 33,6×106 3;
K - , . 29 φ = 14 h / r = 0,125;
r = r 0 + h /2 = 9,01 + 1,2/2 = 9,61 .
II-25-80, . 4.33.
k = 0,15 + 0,85β = 0,15 + 0,85×581/1200 = 0,5615;
c = 15,4 + 3,8β = 15,4 + 3,8×581/1200 = 17,24;
I = bh 3/12 = 140×12003/12 = 201,6×108 4;
q = (g + )3 = (0,266 + 0,194)3 = 4,38 /;
f 0 = 5 q l 4/(384 EJ) = 5×4,38×17,644×1012/(384×104×201,6×108) = 27,4 ;
f = f 0[1 + c (h / l)2]/ k = 27,4[1 + 17,24(1200/17620)2]/0,5615 = 52,6 .
f / l = 52,6/17610 = 1/335 < 1/200, , .
- (. . 57).
. 63 ´ 63 ´ 5 20 , Q = 3,38 (. . 35).
. , , Q = 3,38 , , Q :
Q e 1 - N 2 e 2 = 0;
N 2 = Q e 1/ e 2 = 3,38×54/14 = 13,04 ;
N 1 = N 2 - Q = 13,04 - 3,38 = 9,66 .
Q = 3,38 . d = 20 : T 1 = 0,5 cdk α = 0,5×14×2×0,6 = 8,4 ,
T 2 = (1,8 d + 0,02 d 2) = (1,8×2 + 0,02×82) = 6,57 ;
T' 2 = 2,5 d 2 = 2,5×22 = 7,75 ;
T = 6,57 > N 2/2 = 6,52 .
- (. 58).
, . , , .
, , . (, , ). -00-10. - .
, .
. 58.
1 - ; 2 - ; 3 - 50 ´ 10; 4 - 100 ´ 10; 5 - 60 ´ 60 ´ 18; 6 - (, , ); 7 - -00-10; 8 - 24; 9 - ; 10 - 1:3; 11 -
M = 31,98 ×; N = 55,8 ; Q = 5,16 .
:
b = 140 ; hk = 363 .
e = M / N = 31,98×106/55800 = 573,1 > hk /6 = 363/6 = 60,5 .
, () . , , :
x = hk (1 + hk /6 e)/2 = 363(1 + 363/6×573,2)/2 = 200,7 ;
Na = N (e - hk /2 + x /3)/(hk + a - x /3) = 55,8(573,1 - 363/2 + 200,7/3)/(363 + 5 - 200,7/3) = 84,97 ,
a = 5 . 36-1:
Fa = Na γ n /(Ry γ) = 84970×0,95/(240×0,9) = 374 2.
60 ´ 10 . Fa = 60×10 = 600 2 .
x 3 + x 2 + x + = 0,
:
= -2 Nb /3 = -2×55,8×0,14/3 = -5,208 ×;
= -2 Nb (e - hk /2) = -2×55,8×0,14(0,5731 - 0,363/2) = -6,1185 ×2;
= -4 NF 0 n [ e + (hk + 2 a)/2] = -4×55,8×0,0006×20[0,5731 + (0,363 + 2×0,005)/2) = -2,0344 ×3;
= 4 NF 0 n (hk + a)[ e + (hk + 2 a)/2] = 4×55,8×0,0006×20(0,363 + 0,005)10,5731 + (0,363 + 2×0,005)/2] = 0,7487 ×;
n = Ea / E