σ σ [6, . 330]; [7, . 14]:
σ = σ 0 ≤ σ ,
σ 0 K = 1 [7, . 14]:
K [6, . 327]; [7, . 14].
K = K KHv KH β KH α,
KA = 1 , [6, . 327]; [7, . 6, . 15];
KHv , , [6, . 328]; [7, . 6, . 16]:
ω Hv , / [6, . 328]; [7, . 6, . 16].
δ , (. 5.7);
g 0 , (. 5.8);
υ :
υ = π dini /60;
KH α , ; εβ ≤ 1, KH α = 1; εβ > 1 . . 5.9;
εβ : εβ = b 2 sin β / (π m);
ZE , ; ZE = 190 [7, . 6, . 15];
ZH , [7, . 6, . 15]:
α t : α t = α = 20 [8, . 174, . 9.1];
β b :
β b = arcsin (sin β cos 20) [7, . 60, . 20];
α tω , ;
tg α t = tg α / cos β [8, . 174, . 9.1];
Z ε , [7, . 15, . 6]; εβ ≥ 1
εβ < 1
εα [8, . 175, . 9.1]:
εα = [1,88 3,2 (1 / z 1 1 / z 2)] cos β.
: , n 1 = 1460 -1, u =
= 4,905; n 2 = 292 -1, 1 = 68,956 ; 2 = 331,08 ; z 1 = 21; z 2 =
= 103; β = 7,2522 = 715'8''; m = 2 ; a = 125 ; b 2 = 50 ; d 1=
= 42,339 ; Ft = 3188,66 .
εβ = b 2 sinβ / (π m) = 50 sin7,2522 / (3,14 2) = 1,005;
|
|
tg α t = tgα / cosβ = tg20 / cos 7,2522 = 0,3669;
α t = 20,1484;
β b = arcsin (sinβcos20) = arcsin(sin7,2522cos20) = 6,8127;
ZE =190 1/2 ;
εα = [1,88 3,2 (1 / 21 + 1 / 103)] cos715'8'' = 1,683;
;
υ = π 42,339 1460 / (60 103) = 3,237 /.
9- (. . 5.6).
δ = 0,02; g 0 = 7,3;
KHv = 1+ (2,386 50)/3188,66 = 1,037; KH α = 1,0; K =1,0; KH β = 1,12;
K = 1,0 1,037 1,12 1,0 = 1,160.
:
∆σ = |σ σ | / σ 100 % = |512,7 526,35| / 512,7 100 % = 2,66 %.
. +5 % () 10 % ().
, . ( , ); ; , σ .