, , . , . 12.1); , .
(. . 12.1 12.2) : 2 = 625×103 ×; = 5.
: 40, HRC 50; 40, - HRC 45 (. . 3.3 3.9).
[. (3.9)]
(. . 3.2.)
, , kkl= 1; [ S ] = 1,2.
[. (3.10)]
( ) . 3.1 b = 1,35.
. -
y ba , . , , y ba = 0,4.
[. (3.7)]
2185-66 aw = 160 . , , , aw = 200 .
9563 60 = 2 .
b = 10 :
z 1= 26; z 2 = z 1 u = 26 × 5 = 130. :
.
b 2 = y baaw = 0,25 × 160 = 40 .
b 1 = b 2 + 5 = 45 .
, , b 2 = 80 , b 1 = 85 .
w1 = 101,5 /.
8- .
|
|
. 3.5 y bd = 0,85 b = 1,23.
. 3.4 8- 2,7 / a = 1,08.
. 3.6 2,7 / Kv = 1,0.
,
, :
Fa = Ft tg b = 4700 tg 12o50' 1040 .
[. (3.25)]
KF = KF b KFv.
. 3.7 y bd = 0,85, KF b = 1,31.
. 3.8 8- , v = 2,7 / KFv = 1,1.
, KF = 1,31 × 1,1 1,45.
, , YF zv 1 zv 2 [. (3.25)]:
YF 1 = 3,84 YF 2 = 3,60.
. 3.9 40 s0 F lim b = 500 .
[ SF ]=[ SF ]¢ [ SF ]¢¢ =1,80; . 3.9 [ SF ]' 1,80; [ SF ]" = 1.
, .
Y b [. (3.25)]:
Kf a . , 21354 75,
ea [. (3.25) ].
ea = 1,5; 8- .
(3.25):