7.2.5 r 7.2.6 7.2.11.
7.2.6 7.2.7.
7.2.8. (7.3) (7.24) , .
7.2.7 :
- ;
- , ( 7.1);
- , Rbt,ser;
- ε bt,ult (6.2.31); ε bt,ult = 00015;
- .
7.2.8
; | (7.6) |
W - , 7.2.9;
- N ( ) , , .
(7.6) ./V, - .
7.2.9 W :
; | (7.7) |
; | (7.8) |
-
; | (7.9) |
, , - , ;
1 -
7.1 - - (), ()
- ,
; | (7.10) |
-
yt -
- . W .
, , , (7.9) (7.10) . W
|
|
; | (7.11) |
7.2.10 Ncrc -
; | (7.12) |
7.2.11 , 5.1.22 6.2.2-6.2.31, , 5.1.20. .
Mcrc , 6.2.2- 6.2.31, ε bt,max ε bt,ult, 6.2.31.