() [ () . , ].
(. 12.12) ( , 12.1): F = 8,55 ; v = 1,3 /; D = 400 . , ; ; .
I.
(. 12.13)
. 1.1 h1 = 0,98; , , h2 = 0,99; h3 = 0,95; , , h4= 0,99.
= 5 ( , , 12.1);
(. . 12,13: )
:
= 74 / | w= 101,5 / | |
- | w1 = 32,5 / | |
2= = 62 / | w2= w = 6,5 / |
II. (. . 7.11)
: = 12,35 ; () = 974 /; i p = 3,14; e = 0,015.
1. . 7.3 1( 1 = = 974 /; . . 12.13) = = 12,35
.
2.
= 12,35 × 103 .
3. (7.25)
. 7.8. , 125 , d 1 = 180 .
|
|
4. [. (7.3)]
d 2 = 560 (.. 33)
5.
, , (32,5 32,1) / 32,5 100% = 1,23%, 3%.
, d 1 = 180 d 2 = 560 .
6. [. (7.26)]
T 0=10,5 ( . 7.7).
= 800
7. (7.7)
(. . 7.7) L = 2800 .
8. L [. (7.27)]
w = 0,5p (d 1 + d 2) = 0,5×3,14(180+560)=1160 : =(d 2 d 1)2 =(560 180)2 = = 14,6 × 104;
0,01 L 0,01 × 2800 = 28 0,025 L = 0,025 × 2800 = = 70 .
9. (7.28)
10. , , . 7.10:
= 1,0.
11. , . 7.9:
L =2800 CL= 1,05.
12. , [. (7.29)]: a1 = 153 a 0,93.
13. , [. , (7.29)]: , 4 6, z = 0,90.
14. (7.29)
0 , , (. . 7.8); L = 2240 , d 1 = 180 i ³ 3 0 = 3,9 (, L = 2800 , L);
z = 4.
15. (7.30)
v = 0,5w d 1 = 0,5 × 101,5 × 180 × 10-3 = 9,15 /; q - , [. (7.30)];
16. (7.31)
17. (. . 7.12)