, () .
, .
, , . , .
.
|
(.1) :
1- () ( 1);
2- ( 2);
3- ;
4 .
5 6.
, .1 1 2.
, , 1 2, .
1= 2,
B 1×S1 =B2×S2 (1)
: B 1, B2 ; S 1,S2 .
(1) , , 0, ( ), 0.
(1) , , , .
. 2 (.2). : = 1 + 2, R.
|
2, ,
H = 3×HC2 (2),
HC2 2.
, , 1, 1.
1 ( B 1 H 1) 1 ( ).
2 , - ; 1 .
|
|
.
,
- 0;
- 0;
- δ, ,
B1 = Br1; B2 = B r2 (3).
Br1, B r2 .
2.1. .
. ( - .3).
, 1.
(1) . , 2. 1.
h 1.
2 (1) (3)
r1 ×S1 = B r2 ×S2;
S2 = B r1 ×S1 /B r2;
S1 = c 1 × b1;
(4)
B r1 B r2 ..., . ..
2 S 2' ( 2):
S2' = 2×b2.
, S2' ≥ S2, 2 ;
, , S2' < S2, 2 , S2'´n ≥ S2; n - .
2. , , S2'.
, h S2' = 2×b2 b 2 2. (.5), .
|
, (¢2 b ¢ 2) 2 , 2 (. 6).
6.
2.2. .
2 , H= 3×HC2; HC2 .
:
H×l = J×w (5),
l ; J ; w .
1 (l1), ( l2 ). , l 1 = l 2= l ;
|
|
J = j×S (6 )
j ; S .
.
, 3 . 3 6 ÷ 8 (7 ) .
2.3 ÷ 3.5 A/2 (3.0 A/2 ). :
J (6).
S = f × m;
:
l= 2 f+2 m+p a =P+p a;
: m f.
f = m , (.7). f = m, :
l = 4 f +p a (7).
(2) (7) (5) :
3 Hc 2 ×( 4 f+p a) = J×w (8).
w´S / ky £ S;
S = f×m = f 2;
S = p ×D2max / 4;
w×p×D2max /(4×ky) £ f 2 (9).
a ( ) .
F = F 1 + F 2 = Sn×B,
S n .
Sn = a×d,
= Br1×S1 +Br2×S2 = Sn×B = B× a×d,
.
, (B) 1.5 . (1.1 1.5) , .
w f , (8) (9). : w = 1000, f = 0.5 . w f , w f .
2.3. .
H (.6) H = 2 m + n1 + n2 = 2 f + n1 + n2 . n1 n2 .
d .
2 2 2 d (. 7), 2 , 2 2 d.
1 2 ( d) , , , . , .
2.4. .
:
,
: W ;
d - .
, . ( r), : r1 r2.
:
.
l .
:
r, r2. , r1 = f(d).
:
:
.
:
:
.
, :
|
|
F , ;
S ;
;
.
.8
. 8
:
;
: - .
r2 , , :
.
:
:
, :
(10),
m0 = 4×p×10-7 ;
Br 1, Br 2 - , ;
l1M, l2M - 1 2, 1 l1M =h1 , 2 l2M = h 2;
V1M, V2M - :
V1M = h1×b1×c1, V2M = h2×b2×c2;
S1M, S2M - 1 2. 1 S1M = b1×c1, 2 S2M = b2×c2;
Sn1, Sn2 - 1 2 (.9), Sn1 Sn2 d .
. (10) 1 ( 2).
- 1,
- 2.
, B 01= Br 1, B 02= Br 2, H 01 = Hc. H02 ( 2) . 2 B = f (H). B = Br (.9). H 02.
.10
d - .
d = AM + A, AM A .
AM , : d = A. A .
3.
:
-
-
-
-
-
:
________________________
( )
1 | , , ( 25 150 Br = 0,38, = 145 /, 1= 68, b1 = 40, h1 = 16) |
2 | , , ( 4 Br = 0,5, = 40 /, 2 = 43,5, b2 = 47, h2 = 11) |
( , , ) | (: Æ 1,0; Æmax = 1,09, 0,33) |
( 35) |
|
|
, :