:
(1, 2, 3)
(2.1)
(2.1) ρ, υ1, υ2, υ3, 11, 22, 33, 12=21, 13=31, 23=32. 10 4 . . , . .
(1, 2, 3)
, , ,
,
(2.2)
A .
.. [8]:
τo = 0, m = n = 1 . m = n = 1 ( - ).
( ) n m. : τ = 0 n = 1, m > 1 , m < 1 . n, m .
.., . [8]:
(2.3)
2. ( )
[3]:
(2.4)
(2.4) ; - .
(2.4) , .
.
, .
, , , .
(2.4) . , .
|
|
(2.4) . : (2.4); , . , .
III