- :
- ;
- d;
- - β.
- . , , . , . - .
ω :
ω = βBd / 2.
S = Bd / 2. S1 ( . 2.10 ), β, : S1 = S ω.
S ω , S1 = Bd / 2 - βBd / 2 = Bd (1 β) /2 S0 , R (. 2.10), R, .. S0 = R2 - π R2 /4 = R2 (1 π/4). S0 S1 : R2 (1 π/4) = Bd (1 β) /2. | |
. 2.10. |
R2 = Bd (1 β) /(1 π/4) /2.
:
.
R , , β< 0,98 . . , , -. .
pm , -. . S1 , OCDB (. 2.11) β, S1 = Bd (1 β) /2.
(. 2.11), . S1 S0, : pm B/4. = Bd (1 β) /2. pm: pm = 2d (1 β). p | |
. 2.11. |
: p = k pm. k ( p = 0, ) ( R = 0, ). , k ≈ 0,66. k .
|
|
(. 2.11): tgθ = 2p/ B. , : tgθ< 0,1. , θ≈ tgθ (θ ). θ ≤ 0,02 θ = 0, . . . θ > 0,02 . . :
R = 0,5 .
, , -. :
-
pm = 2d(1- β);
- : p = 0,66 pm;
- : θ = 2p/B;
- θ ≤ 0,02 ( θ = 0), ;
- θ > 0,02 .
, .
. f = B/50. - | |
. 2.12. |
1: 100 4 - . - 2.13.
2.13. -
4, 3, 2 1. , , . , (. 2.14).
. 2.14.
(. .. 2.4, 2.5), , , .
b. :
- h - : h = D + z + h ,
D - ;
z - 1- ;
h - ;
- (≈ 30 );
- (≈ 30 );
- B/2;
- (≈ 30 );
- ( ) 10 .
, b = D + z + h + B/2 +(330 + 10) .
: b = D + z + h + B/2 +100 .
, b ≤ 297 , 297 . , b> 297 , 420 (. ).
L :
- 20 ;
|
|
- (≈ 30 );
- , L ( ), L ( ) L, , ( ), ..
L = L +L +L;
- (≈ 30 );
- 1: 100;
- (≈ 30 );
- 5 .
, L :
L = L + B + (330 + 20 +5) = = L + B +115, .
210 , 297 , 297 , b = 420 (. 2.14).