7.1 .
ʳ . :
, =1105 ;
, =1,2105 ;
, = (2,02,3)105 .
=1,2105 .
:
(7.14)
0 = (2,54,0) t. 0 = 3 t, 0 = 9.
ϳ :
.
:
, ;
, .
, .
( ) .
.
=p(φ) (φ - , , ), .
=const, . , , .
:
M = p 0 brr 0 (1+sφ), (7.15)
; ; ; ; .
Mmax=2p 0 brr 0 j =0, .
() () 7.2
7.2 ()
. . . ó , :
(7.16)
0 ;
2 = 0,309; a 3 = 0,436; a 4 = 0,288; a5= 0,196; a6= 0,141; a7= 0,109; a 8 = 0,097; a 9 = 0,094; a 10 = 0,080; a 11 = 0,071; a 12 = 0,041 .
:
(7.17)
=2,3n; k n =2,4 a k ;
= 0 (=2,n) .
.
7.3 ( ) ( ).
|
|
7.3 () ()
. [1]:
=p(φ)= 0 , (7.18)
, .
, 7.2
7.2
φ, | |||||||
1,05 | 1,04 | 1,02 | 1,0 | 1,02 | 1,27 | 1,50 | |
= 0 , |
, 7.3.
7.3
φ, | |||||||
1,05 | 1,05 | 1,14 | 0,9 | 0,45 | 0,67 | 2,85 | |
= 0 , |
, 7.2 7.3 .
, , , 7.2 7.3, 7.4 [1].
7.4 :
;
. :
(7.19)
, , . =1/p. (7.17) :
. (7.20)
(7.21)
7.5 MathCad, =1/p.
7.5
j j :
(7.22)
, , , . 7.6 , .
7.6
: ; : ,
a p=p(j) i M=M(j) .
|
|
7.7 7.8 .
7.7 (=0,5)
7.8 (=0,125)
7.4 7.5 .
7.4
³ . | ||||
г | ||||
0,00 | 1,00 | 1,05 | 1,230 | |
0,25π | 1,00 | 1,097 | 1,278 | |
0,50π | 1,00 | 0,896 | 1,450 | |
0,75π | 1,00 | 0,570 | 1,813 | |
π | 1,00 | 2,860 | 2,465 |
7.5
³ . | ||||
г | ||||
0,00 | 4,000 | 3,485 | 1,450 | |
0,25π | 3,414 | 3,034 | 1,970 | |
0,50π | 2,000 | 2,066 | 1,490 | |
0,75π | 0,588 | 0,921 | 0,530 | |
π | 0,000 | 0,000 | 0,000 |
, , :
(p=p=const):
, (7.23)
;
.
:
(7.24)
, :
S=10,03A.
, , :
(7.25)
=1/p, :
S=10,42A.
() :
S=S+DS. (7.26)
:
, (7.27)
= 0,060,10 . = 0,08;
, , 1 / . = = 1110-6 -1;
, , 0 , , , .
= 473573 ; = 383388 . = 523723 ; = 343463 . 0 = 293 .
, = 493 ,
= 393 0, 0 = 293 0, :
.
, , (
).
7.6
. , .
7.6
, , | |||
г | |||
-54 | 16,53 | 15,84 | 9,45 |
-50 | 10,73 | 10,29 | 6,22 |
-37 | 9,55 | 9,17 | 5,58 |
-14 | 9,55 | 9,17 | 5,58 |
: -54 S =1416 , -50, 37 S = 910 , -14 S = 1415 .
( ) . S / t= 2,54.
:
|
|
; (7.28)
.
.
:
(7.29)
m , (m= 12).
m= 1,57.
ϳ :
.
.