/h1 | l/B | ρ , , | ||||||||
0.5 | 0.4 | 0.3 | ||||||||
l/B | ||||||||||
0.5 | 2 > | 0.5 | 2 > | 0.5 | 2 > | |||||
1 1.5 | 0.1 0.5 | 1.05 1.35 1.6 | 1.05 1.25 1.4 | 1.05 1.15 1.25 | 1.05 1.15 1.45 | 1.05 1.1 1.3 | 1.1 1.15 | 1.05 1.1 1.25 | 1.1 1.15 | 1.1 1.1 |
1.6 2.5 | 0.3 0.5 0.7 | 1.05 1.3 1.8 2.1 2.35 | 1.05 1.2 1.45 1.75 | 1.05 1.1 1.25 1.5 1.6 | 1.05 1.2 1.4 1.75 1.9 | 1.05 1.15 1.25 1.45 1.6 | 1.05 1.1 1.15 1.2 1.5 | 1.05 1.15 1.25 1.3 1.5 | 1.1 1.15 1.25 1.35 | 1.05 1.1 1.2 1.2 |
2.6 3.5 | 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 | 1.1 1.15 1.2 1.35 1.5 1.8 2.25 2.8 3.65 4.45 | 1.05 1.1 1.15 1.2 1.4 1.6 1.9 2.4 2.9 3.35 | 1.05 1.05 1.1 1.2 1.25 1.35 1.45 1.9 2.6 2.65 | 1.05 1.1 1.15 1.2 1.3 1.5 1.7 1.9 2.2 2.4 | 1.1 1.1 1.15 1.2 1.35 1.5 1.6 1.9 2.1 | 1.05 1.1 1.1 1.15 1.2 1.25 1.3 1.5 1.6 | 1.05 1.1 1.1 1.2 1.35 1.5 1.65 1.8 | 1.05 1.1 1.1 1.1 1.25 1.4 1.5 1.6 1.7 | 1.05 1.05 1.1 1.1 1.15 1.2 1.25 1.3 1.4 |
>3.5 | 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 | 1.2 1.4 1.75 2.35 3.25 4.2 5.1 5.8 6.2 6.3 | 1.15 1.3 1.5 2.8 3.5 4.5 4.9 | 1.1 1.2 1.3 1.75 2.4 2.85 3.2 3.6 3.9 | 1.1 1.2 1.4 1.6 1.9 2.25 2.55 2.8 3.4 3.5 | 1.1 1.15 1.3 1.4 1.7 2.3 2.4 2.8 2.9 | 1.05 1.1 1.2 1.3 1.45 1.7 1.85 1.95 2.3 2.4 | 1.05 1.1 1.25 1.35 1.65 1.95 2.1 2.25 2.45 2.6 | 1.05 1.05 1.2 1.25 1.5 1.7 1.8 2.1 2.25 | 1.05 1.1 1.15 1.3 1.4 1.5 1.6 1.7 2.5 |
: 1. ( ), ;
2. h1 , ;
3. l ( 1 , ), ;
4. l , ;
5.
ρ = (ρ1 S1+ ρ2 S2 + ρ3 S3)/(S1+ S2+ S3), (4)
ρ1, ρ2, ρ3 , , . ρ = 0.65-0.7; ρ = 0.4-0.65; ρ = 0.15-0.45;
S1, S2, S3 , ( ) .
1: , . (. 2), , . 2.7 . =15 . =20 .
|
|
. 2. ( 1)
:
, (1)
III = 0.5% (. 2)
I = III m C = 0.5 1.2 1 = 0.6%
= 1.2 (. 3)
η0: l/B = 2.6/4.2 = 0.62; /h1 = 4.2/1.5 = 2.8; η0 = 37 (. 4)
: /= 15/20 = 0.75; = 1.55 (. 5)
τ0 = τ1 τ2 τ3 τ4 τ5 = 0.75 0.5 1 1 1 = 0.375 (. 6-9)
r1: l/B = 0.62; /h1 = 2.8; l/B = 3.2/4.2 = 0.76; ρ = (ρ1S1 + ρ2S2 + ρ3S3)/
(S1+ S2+ S3) = (0.710.9 + 0.629.7 + 0.3510.9)/(10.9+29.7+10.9)=0.57; r1 = 3.0 (. 10)
S = 0.6 1.2 37 10.9 1.55/100 0.375 3 = 4 2