N1 = Nη1η3 = 43,4∙0,99∙0,995 = 42,8
N2 = N1η2η3 = 42,8∙0,97∙0,995 = 41,3
1.6. :
1 = N1/w1 = 42,8103/308,5 =138,7 ͷ
2 = T1uη2η3 =138,72,50,970,995 =334,8 ͷ
/ | / | ͷ | ||
42,8 | 308,5 | 138,7 | ||
41,3 | 123,4 | 334,8 |
2.
40:
265;
280.
[σH] = (2HB+70)KHL/[SH]
[SH] = 1,1 [1 .33]
KHL = 1 ,
NH0 = 1,0107
NHE -
t = 430037 = 25200
4 ;
300 ;
3 ;
7 ;
NHE = 60tn = 60∙117825200 = 178∙107
HL = (1,0107/178,0107)1/6 = 0,484 → HL = 1,0
[σH] = (2265+70)1/1,1 = 545
[σF] = 1,8HBKFL/[SF]
[SF]
[SF] = [SF] `[SF]`
[SF]` = 1,75
[SF]`` = 1 [1c44]
[SF] = 1,751,0 = 1,75
KFL
= (4106/178,0107)1/6 = 0,362 → KFL = 1,0
NF0 = 4106
[σF]1 = 1,82801,0/1,75 = 288
[σF]2 = 1,82651,0/1,75 = 273
2.2. :
d = 99 [1c.49]
ψbR = 0,285
β = 1,5 [1c.32]
de2 = 99[334,8∙103∙1,3∙2,5/(5452(1 0,5∙0,285)2∙0,285)]1/3 = 270
12289-76 de2 = 280 [1c.49].
.
z1 = 20,
: z2 = z1u1 = 20×2,5= 50
:
me = de2 / z2 = 280/50 = 5,60
:
tgd1 = u1 = 2,5 d1 = 21,80,
d2 = 90o d1 = 90o 21,80 = 68,20.
Re b:
= 0,5×5,60(202 + 502)1/2 = 150 ,
b = ybR × Re = 0,285×150 = 42 .
Rm = Re 0,5b = 150 0,542 =129,0
:
de1 = me × z1 = 5,60×20 =112,0 ,
|
|
d1 = de1Rm/Re =112,0129,0/150 = 96,32 .
:
m = d1/z1 = 96,32/20 = 4,8 .
:
d2 = mz2 = 4,8×50 = 240 .
:
ybd = b/d1 = 42/96 = 0,44.
.
V = pd1n1/6×104 = p×96×2946/6×104 =14,81 /.
7 .
, .
- Ft = 2T1/d1 = 2×138,7×103/96 =2890
- ,
Fr1 = Fa2 = Ft tgacosd1 =2890tg200×cos21,80 = 976 H
- ,
Fa1 = Fr2 = Ft tgasind1 = 2890tg200×sin21,80 =390 H
N1 = vFt1 = 2890∙14,81 = 42801
2.7. :
ZH = 2,49 [2c.34];
ZE = 190 0.5 [2c.35];
υ = 0,85 [2 c.70]
Zε
Ze = [(4 - ea)/3]0,5 = [(4 - 1,707)/3]0,5 = 0,874
z1 = 20 zV1 = 20/cos21,80 = 21,5
z2 = 50 zV2 = 50/cos68,20 = 135
ea = [1,88 3,2(1/zV1 + 1/zV2)] = [1,88 3,2(1/21,5+1/135,0)] = 1,707
:
KH =KA KHa × KHb × KHV = 1,21,0×1,16×1,37 = 1,91
KHa = 1,0 , [2c. 33],
KHb = 1,16 , ybd = 0,44 [2c. 30],
KHV = 1,37 V =14,81 /. [2c. 29].
K = 1,2 [2c.28]
σ = 2,491900,874{2890×1,91[(2,502+1)]1/2/(0,8542×2,5096,0)}1/2 = 544
(545 544)100/545 = 0,2% ( 5%)
smax = sH
T1max/T1 = 1,7
σHPmax = 2,8σ = 2,8590 =1652
smax = 5441,70,5 = 709 < sPmax =1652
,