1. , .
1 2. .
) 3.1 () :
40; £ 350 ; .
) 3.2 () 40.
1 = 300 s 1 = 900 /2 (s -1)1 = 410 /2 | 2 = 270 s 2 = 790 /2 (s -1)2 = 375 /2 |
2. [ s ] , /2.
) HL:
,
NHO , ( 3.3 );
N .
NHO 1 = 21,6∙106; NHO 2 = 16,5∙106
N = 60 n∙t,
t = 8 /∙300 /∙5 = 12000 .
N 1 = 60∙1450 /∙12000 = 1,04∙109
N 2 = 60∙362,5 /∙12000 = 2,6∙108
.. Ni > NHi, KHLi = 1.
) , NHO 1 NHO 2.
1.2 . ( ).
[ s ] = 1,8 + 70
[ s ] 1 = 2∙280 + 70 = 630 /2
[ s ] 2 = 2∙250 + 70 = 570 /2
) [ s ] 1 [ s ] 2:
,
n = 1,1 ( ).
.
: [ s ] = [ s ] 2 = 518,2 /2.
3. [ s ] F, /2.
) :
,
NFO = 4∙106 , ;
N .
.. N > NFO, KFL = 1.
) [ s ] FO, NFO.
1.2
[ s ] FO = 1,8 HB
[ s ] FO 1 = 1,8∙280 = 504 ;
[ s ] FO 2 = 1,8∙250 = 450 .
) [ s ] F 1 [ s ] F 2:
,
KFC = 1 ;
n = 1,75 .
4.
1. w, :
,
Ka = 49,5 ( );
u = 4 ;
2 = 101,8 ∙ ;
yba . ybd .
|
|
ybd = 1,
;
[ s ] H = 518,2 ;
KHb = 1 ( ).
(1- 2. ).
, w = 100 .
2. m, :
,
Km = 6,8 ;
d 2 , :
;
b 2 , :
b 2 = yab∙aw = 0,4∙100 = 40 ;
[ s ] F = 257 .
(1- 1 ).
, m = 1 .
3. .
.
.. b = 0, cos b = 1, ,
4. .
z 2 = u∙z 1 = 4∙40 = 160
5. .
6. .
da 1 = d 1 + 2 m = 40 + 2∙1 = 42 | ||
da 2 = d 2 + 2 m = 160 + 2∙1 = 162 | ||
df 1 = d 1 2,4 m = 40 2,4∙1 = 37,6 | ||
df 2 = d 2 2,4 m = 160 2,4∙1 = 157,6 | ||
b 1 = b 2 + (24) = 40 + 4 = 44 | ||
b 2 = 40 |
7. sF 2 sF 1, .
) zv 1 zv 2.
) YF 1 YF 2.
4.4 :
YF 1 = 3,7; YF 2 = 3,6.
) .
.
) .
,
Yb = 1 ;
KF = KFb = 1,1 .
8. .
) :
) :
.
au = 20
) :
Fx 1 = Fx 2 = F ∙tg b = 0, (.. b = 0)
w, | , d1 d2 | ||||||
m, | |||||||
b1, b2, | , da1 da2 | ||||||
z1 z2 | , df1 df2 | 37,6 157,6 | |||||
sF1 | |||||||
sF2 | |||||||
5.
|
|
1. , .
,
) 1 = 101,8 ∙ = 2 ( );
)
= ∙∙q∙∙,
= 1 ;
= 1 ;
q = 1 q £ 70;
( = 1,25);
= 1 ;
= 1∙1∙1∙1,25∙1 = 1,25.
) z 1
z 1 = 29 2 u,
u , u = 5,7.
z 1 = 29 2∙5,7 = 17,6.
, .. z 1 = 17.
) [ p ] = 29 ( n 2 = 362,5 /, 5.8 ;
) n = 1 .
2. .
z 2 = z 1∙ u = 17∙5,7 = 96,9 = 97
13568 75 = 15,875 , d = 5,08 , l 0 = 13 .
3. .
A = 0,28∙ 2 = 0,28∙(15,875 )2 = 70,56 2
4. .
5. , .
( = 2 )
6. .
, . = 19,05 , d = 5,94 , l 0 = 18 .
7. .
= 0,28∙(19,05 )2 = 101,6 2
8. .
9. , .
10. .
, .
11. .
= 40∙ = 40∙19,05 = 762
12. .
. , w = 142.
13. .
14. .
f = 0,02∙ = 0,02∙772 = 15,44
15. , .
Fr = 1,15∙ Ft = 1,15∙2374 H = 2730 H
16. .
l = w∙p = 142∙19,05 = 2705,1
17. .
) :
) :
;
,
= 0,7 ;
,
l ,
,
d 1 = 5,94 .
;
) :
6.
6.1
8 .
Ft 1 = Ft 2 = 1,3 ;
Fr 1 = Fr 2 = 473 ;
Fx 1 = Fx 2 = 0.
6.2
:
6.2.1 : F = KB∙F + 2 F 0,
KB = 1,15 ;
F 0 = Kf ∙q∙a∙g,
Kf = 6 ;
q = 1,9 / ;
= 772 ;
g = 9,81 /2 .
F 0 = 6∙1,9 /∙772∙10-3 ∙9,81 /2 = 86,3 ,
F = 1,15∙2374 + 2∙86,3 = 2902,7 .
6.2.2 :
, .. FM = 700 .
6.3 .
|
|
6.3.1 : , .
6.3.2 (w 1 w 2).
6.3.3 : Fr 1, Ft 1; Fr 2, Ft 2.
Ft 1 Ft 2 , T 1 2, Ft 1 w 1, Ft 2 w 2.
6.3.4 .
) F ;
) FM Ft 1.
6.3.5 .
(Ft 1, Ft 2) (Fr 1, Fr 2) .
.
6.3.6 .