, .
βm = 35 = 0,285 , ,
. (4.4.6)
, ; , . (. . 4.9) = 0,285; u , ; , ; : = 0,85; 4.16.
4.16
HB , HB | HRC ,HB | HRC ,RC | |
=1,22+0,21u | =1,13+0,13u | =0,81+0,15u | |
=0,94+0,08u | =0,85+0,043u | =0,65+0,11u |
, (. 4.17).
, (. . 4.15) z 1 . : .
4 %.
:
; (4.4.7)
. (4.4.8)
, 4.14 4.15.
:
. (4.4.9)
4.17
( 12289-76)
- | , , | ||||||||||
1,6 | (1,8) | 2,0 | (2,24) | 2,5 | (2,8) | 3,15 | (3,55) | 4,0 | (4,5) | 5,0 | |
(71) (90) (112) (140) (180) (225) (280) | 10,5 | 11,5 | 11,5 | ||||||||
: , , |
|
|
, , : 4.10; 4.17; 4.11; 4.16. , , 190 . , (4.3.14). = 2,5; ( β m =35 =2,26).
, :
, (4.4.10)
. (4.4.11)
εa (4.3.18).