-
1
-
: .1022/3
:
.
1. : , , , .
, . .
, , , . , , , , , ..
:
0.1
0.01
2. .
1.
2.
.
d0, | L0 | D, | , |
35.2 |
D ;
P , . , 2.
:
, Þ ________________________________
Þ = Þ = _________________________
2
, | , | , | , | , | , | 2 | |
5,2 | 5,167 | 29,6 | 21,6 | 51,2 | 51,2 | 38,5 | |
5,2 | 29,6 | 21,6 | 51,2 | ||||
5,1 | 29,6 | 21,6 | 51,2 |
(2) , , : =
.
(i, ) (∆l i = li-l0, ) :
3.
(i) (∆l i)
3
P i, | P | 0,2 | P | P | P1 | P2 | P3 | P4 | P5 |
.. | |||||||||
∆l, | 0.2 | 0.7 | 8.4 | 1.4 | 3.2 | 5.4 | 14.4 |
¾ (σ) ;
¾ (σ0,2) 0,2;
|
|
¾ ( σ.) .
=10000/38.48 = 259.87
=10300/38.48 = 267.67
= 16600/38.48 = 431.39
4.
4.
σi, | σ, | σ0,2, | σ, | σ1, | σ2, | σ3, | σ4, | σ5, | |||||
.. | 259.87 | 267.67 | 431.39 | 285,71 | 350,64 | 402,59 | 405,19 | 322,07 | |||||
δ, % | 45,45 | ||||||||||||
ψ, % | 44,8 | ||||||||||||
εi, % | 0,5 | 23,86 | 3,97 | 15,34 | 28,4 |
(δ), (δ) (ψ).
δ = 100∙(l l0) / l0 = (100 (51,2-35,2))/35.2 = 45,45%
Ψ = = 100(49 27.04)/ 49 = 44,8%
εi.
εi = 100∙ ∆l / l0
(1, 2, 3 4 ), (Pi) (∆l i). 3. σi εi. 4.
εi = 100∙ ∆l / l0
σi,=
4, .