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Nc = L*(B+H) +A
L, B, H , , , ;
= k*ΣlH*hH , , ;
lH, hH , ;
k = 1 .
= 1*6,5*7,1 = 46,15 2
N = 28,6*(6,9+1,8)+46,15= 294,97 => 295 2
. 3.31 1 ˝˝, N = 294,97 ², 2 250 127 .
761 74 2 125 ( )
127 .
125 15 ( ˝˝)
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D = (30÷35)*d,
: d , .
D = (30÷35)*15 = 450÷525 , (0,45÷0,525 ).
, (3):
V = k*l*d2*10-5,
: k = 1÷0,85
l , .
V = 1*76*152*10-5 = 0,17 => 0,2 3.
():
= 1,27* 
+h +Δh,
: V , 3.
h = (0,5÷0,6) D = 225÷270 ., , .
Δh = 15d = 15*15 = 225 ., .
D , .
= 1,27* 
+225+225 = 450 => 0,45 .
() :
D = 10*d;
D = 10*15 = 150 .
():
l = 18,5* 
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Q .
l = 18,5* 
= 619 .
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R = 10*d = 10*15 = 150 .
0 -.
h = 40 .
= 6 .
112-4/8.
2,2 .
1355/595 /.
F0 = 83,8 .
():
Fmax = k*[8,53(m+m1h)+2mg]
k (1,25-1,35).
m .
g 9,8 /.
Fmax = 1,3*[8,53(125+17,1*40)+2*125*9,8 = 12155 =>12,2 .
():
F = *k*d2
F = 22,6*1*152 = 5085 =>5,1 .
D = 
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= Fmax* 
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F = 
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: F , .
k ; 6 , 8 .
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F = 9,8a2* 
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a2 = 500, b2 = 0 N<1000
F = 9,8*500* 
= 83790 => 83,8 .
Nc <500 :
z = (N + a)/b,
: a = 410, b = 200 Nc < 500
z = (295+ 410)/200 = 2,7 => 4
() :
l = a1+b1Nc
: a1 = 100, b1 = 0,1 Nc<700
l = 100+0,1*295= 129,5 .
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, :
=[(1+qm)k+q1+q2]k1,
: P1 , , .
q = 75 , .
q1 , .
q2 ( 17 25 .)
k = 1,10 .
|
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k1 = 1,10 , .
= [(246+75*246)*1,10+300+17]*1,10 = 22971 .
= 1+ qm1+q1+q2,
: q1 = 2 41 .
= 246+75*2+300+13 = 713 .
102% , :
7*1,02 = 8 .
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F = 1,133*Pe,
()
F = 1,133*220 = 249,3
:
l = 160+0,035*Nc,
l = 160+0,035*295 = 170 .
, :
R = 0,59*Nc
R = 0,59*295 = 174,1 .
, , , :
F0 = k*F
k = 5
F0 = 5*249,3= 1246,5 .
.
(), :
S = 
= 
= 615,8 .
Q = 1147 ;
β1 = 1,02 ;
η = 0,95 ;
k = 2 .
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= s*n = 615,8*6 = 3696 .
n = 6 , .
():
D = e*d = 20*0,03 = 0,6 .
: e = 20 .
d = 30 = 0,03 . .
():
t = β*d = 1,1*0,6 = 0,66 .
: β = 1,1 , .
():
L = Lp + L = 75+288 = 363 .
: Lp = 75 . ;
L = Z*π(D + d) = 3*3,14(0,6+30) = 288 . ();
Z = 3 .
():
L = (2,0÷2,5)*D = 1,2÷1,5 .
():
D1 = D + d = 0,6 + 0,03 = 0,603 .
(/):
n = 
= 
= 0,12 /.
: V = 0,23 / .
():
D = D + 3d = 0,6+3*0,03 = 3,63 .
(/):
V = V 
= 0,23 
= 1,4 /.
():
N = 
= 
= 1 = 1000 .
: η ;
η = η * η2 * η = 0,98*0,962*0,95 = 0,86
η = 0,98 , ;
= 1 ;
η = 0,96 .
η = 0,95 , , .
:
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= 
= 26,3
: η = 25 / (/).
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