ʳ . (. . 30.1, , ) () ω () v. ' φ x ;
, (1)
; z . (1) ,
. (2)
. 30.1, , (3)
.
, .
.
Fa ( ) . 0. 1, , ( ) , s ( ) s0. . (4)
Ts0 ( ).
s, , (. 30.4,). Fn Fs = Fnƒ. Fn cosδ Fs F, .
F Ft F : .
:
, (5)
ψ ; φ' ,
. (6)
δ (. . 30.2):
δ ≈ 0,5α; δ ≈ 30, δ = 0.
(5) , Fa v . Fa ν ( . 30.4, ), Ts ( φ' > ψ):
. (7)
(7) , (ψ > φ') T's', . 䳿 .
[. (2) (5)]
. (8)
(8) 䳿 Fa ν .
0,60,8. (ψ < φ') 0,5.
|
|
. .
. (9)
( )
, (10)
H1 (. . 30.2); z = / .
[] , . [] = (12...15) , [] = (15...18). [] = 8 [] 5 . , , []=(4...5) .
, (λ = 1/), (. . 30.2). Η .
ε = H/d2 = 1,2...2,0 . , λ ε (10),
.
, (11)
d2 . Η = ε d2.
. ̳ :
. (30.12)
d () ; k (k = 0,87 ; k = 0,65 ; k = 0,5 ); .
[] = (25...0)
[] = (45...50) .
䳿 . 䳿 Fa 䳿 Τ [. (4)].
(13)
(), . ij d0 d1 . [σ] = (0,2...0,3)σ. , Fa, ( ).