, , .
( ).
.
Jp=πdf14/64(0.375+0.625(da1/df1) =
=
f=l1 =
[f]=
, ,
f= <[f]=
:
σ-1 = 0,43* = ,
τ-1 = 0,58* σ -1 =
-. .
.
d = 40, b= 12, t1= 5,0 ,
WK = πd3/16-bt1(d-t1)2/2d=3,14*403/16-12*5,0(40-5,0)2/2*40
= 11,64*103
τ=;τ= Ψτ=
s = sτ=
-.
σ-1 = 0,43* =
τ-1 = 0,58* σ-1 =
(.8.5)
W = πd3/32-bt1(d-t1)2/2d=
= =
W = πd3/16-bt1(d-t1)2/2d=
=
.
.
-.
9. , .
- ( .11.5).
:
d =, , ,
:
d =
.
, .
d= .
b×h×l= × × , =
, d= , b×h×l= × × , = .
<[σ ]
, 10.13.
25347-82.
. .
.
. . , - , 80-100. .
, , , . d1= ,
|
|
D = . , , . , . .
.
- I II, .
. II . , II .
. .
.
, 10.9 . = vs= / /. 10.10 -14.