(. 12.21).
, , = 4 ; -
= 74 / (
, ; ; .
I.
(4.14) h 0,8.
. 1 = 5 4 1500 / 41124, = 5,5 3,7%. = 1500 0,037 × 1500 = 1444 /,
. 2 d = 32 .
( )
II.
z 1 : = 19,6 z 1 = 2.
z 2 = 40 (. . 4. 1).
2144-76 <4%.
. 45 HRC 45 .
, 93 ( ).
vs5/. [s ] = 155 (. 4.9). [s0 f ] = kfl [s0 f ]'. kfl = 0,543 , N S > 25 107; [s0 f ]' = 98 . 4.8;
q= 10.
= 1,2.
[ (4.19)]:
2144-76 (. 4.2) = 8 q = 10.
q
:
[. (4.7)]
|
|
b 1 = 132 ;
g ( . 4.3); z 1 = 2 q = 10 g = 11o19.
:
[. (4.12)]
[s ]149 (. . 4.9).
w = 180 , m q w = 200 , . . 10 %, aw (4.19) , s H. [. (4.14)]:
vs = 6,15 / (. . 4.4) f ' = 0,020 1,5 = 0,03 r'= 1o43'.
,
. 4.7 7- . Kv = 1,1.
[ (4.26)]
q = 10 z 1 = 2 . 4.6 q = 86. = 0,6 ( , . 65):
[ (4.23)]:
, 13,4% ( 15%).