, , .. .5.1. , . , (.5.2). (. .5.1), , . ( . 5.2 ) .
, , , . .
. , , . k (5.4)
F = k B I l1, (5.5)
B - ; I - ; l1 - , ; F ( , , ). ,
M1 = k B I l1 l2 / 2,
l2 - , .
1 : , , . .5.2 .
,
M = 2 M1 = k B I l1 l2 = k B I S, (5.6 )
S - .
k I S m . . ,
,
- .
Pm (5.5) :
, (5.7)
- , .
, , (5.7) , .
, , . .
, . , j
|
|
N = C j, (5.8)
C - . .
j (| | > | |), M - N. j N. , N M. , , , , (5.6) (5.8),
C j = k B I S. (5.9)
(5.9) , . .
(5.9)
, (5.10)
, - C, j, k, S.
1. .
2. .
|
2.1. (. 5.3, , ; 1 - 4313, 4315, 4317).
2.2. R1 R2, 7-10 1. , .. 0 90.
2.3. . 5.1. (5.10)
5.1
/ | I, | j, | Bi, T. | |<B> - Bi | | |<B> - Bi |2 |
× ×× | |||||
S | |||||
< > |
I j Bi < B>. . 5. 2.
5.2
/ | × 108, ×/ | S × 106, 2 | k | |
2.4.
B = <B> D B, a =...,
3. j = f (I). , .
1. ?
2. ?
3. , ( ).
4. ( ), .
5. .
6. .
6