:
, (5.1)
- , ( 5.1);
(/)- , . ;
F- , ;
m n , ;
()- ;
- , ; ,º- ( = 25,2);
V(3/)- ,
(5.2)
D () ; w (/) .
40 .. , . | |||
50 .., , , | |||
52 .. | |||
) (, . ., ) 1;
m n f, vm, vm/:
; (5.4)
. (5.5)
m f :
f<100 . (5.7.)
fe<f<100 m f = fe.
n f<100 vm
n=1 vm≥2; (5.8)
n= 0,532vm2 - 2,13vm + 3,13 0,5<vm<2; (5.8)
n=4,4vm vm < 0,5. (5.8)
x() , (/3) , :
(5.9)
d f<100 :
|
f>100 DT0 d :
|
um (/3) ()
|
|
=S1C, (5.12)
S1- - , / F:
S1=3(/)4-8(/)3+6(/)2 /<1; (5.13)
1< /<8; (5.13)
F<1,5 x/x>8 (5.13)
.