. σ; σH max; σF; σF max .
, .
. , , (23.26). aW.
: T1H u; ψba = b/aW ψbd = b/d1 23.1; (); ; , , ; [σ].
aW . (23.26)
σ = ZM ZH Zε
aw:
aW ≥ (u 1) .
a = ,
:
aw min = (u 1) .(23.32)
(23.32) H (), [σ] (), awmin ()
(23.32) , , , (Zε, Hα, KHv). : = 495 1/3, = 415 1/3 ;
=430 1/3, = 360 1/3 () .
β , ψbd . 23.8.
(23.32) u, ψbd, [σ] .
(23.32) awmin .
m'n = 2aw min cos β / (z1+z2). (23.33)
mn mn 956360.
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(23.33) , Z1 z2. z1 z2 = u∙z1 , z1 z2 .
( εα) . ( ), ( da), ( , ). , [. (23.30)].
, , , .
, m ≥1,5 .
z1 > zmin, zmin . zmin = 17, 10. , , β = 21...24, zmin= 14, β = 28... 31, zmin = 12.
z1 ≥ 25.
z1, z2 m, . z1 z2 m.
, σF [σ]F. , , .
σF [σ]F,, , . , . > 50...60 HRC .
. . 2 /. . . , .
³ ( ψba = 0,10...0,15). ( 㳺 ). ̳ (23.32), , , β = F =1.
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25 % . ̳ 2 . , σF (23.30) 2 [σ]F.
ͲͲ Ҳ ײ
. , . , Σ = 90. .
(. 24.1) , , Re , . , .
ϳ δ1 δ2 .
, , . Re, . ֳ , . , . 1 02A, .
, . . , Σ, δ1 δ2, . , .
, . o . . 85 %. 0,95 0,96. , .