(t ), , . t , 㳿 .
: 볿 . t .
1.
t :
. (17)
(. 5) t : .
2.
( ) t . (. 3) . , 볿 , . , 볿 , 볿
, (18)
V , 20..25 /.
V = 20 /,
.
(. . 3) t = 1,1 .
,
=54,6 .
, t = 54,6/3 = 18,2 .
=40...90 .
. (19)
=60 , t (t = 21,0 )
.
:
- (/) μ = 1/ t ;
- .
, 1 l=0,035 / : /, .
. 5. , Y³1 .
5
|
|
t , | t , | m, / | Y | |
21,0 | 21,9 | 0,046 | 0,76 | |
18,2 | 19,0 | 0,053 | 0,66 |
t , . 5 . t , , υ=0,35..0,45. υ (. 5) υ = 0,40.