:
- ' ;
- , ;
- .
:
1. TIRATEST-2151;
2. 0.05 .
: ______________________________________
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( ):
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:
12423-66. ϳ ε. () . ε = const, : 5 , 15 , 30 , 45 , 1 ., 5 ., 10 ., 15 . 5 . .
. 2.5. :
- σ(t)= P(t)/F0;
- ( ) E(t) = σ(t)/ε,
F0- ; ε = Δl/l0- ; Δl- ; l0- .
Δl=_____, l0=_____, ε = _______..
t= 0 , , . 1.1.
.
2.5. ' .
(t), | σ(t), | , | Δ, % | ||
(t) | (t) | ||||
|
|
σ = σ(t) ,
. (2.5.1)
E τ ( ) " " ,
(2.5.2)
:
1. "lnE(t) - t". ˳ "lnE(t) - t" ( 2.5(1), ). г
. (2.5.3)
ln En ,
En= (lnEn). τn
tn- ,
E(tn) - , .
. 2.5(1). En τ n, ( ).
2. ³ E(t) φ n(t), (2.5.3), ln[E(t) - φ n(t)] (. 2.5(2), ).
(2.5.4)
E(tn-1) . τn-1
.
. 2.5(2). En-1 τ n-1, ( ).
3. ln[E(t) - φ n(t) - φ n-1(t)] (. 2.5(3), ) .
. 2.5(3). En-2 τ n-2, ( ).
4. 4- , ln[E(t) - φ n(t) - φ n-1(t) - φ n-2(t)] (. 2.5(4), ).
. 2.5(4). En-3 τ n-3, ( ).
,
ln En= _________, En= __________ , τn = _________________,
τn ______________________________;
ln En-1= ________, En-1= _________, τn-1 =_________________,
τn-1 ______________________________;
ln En-2=_________, En-2= , τn-2 =________________,
τn-2 _______________________________;
ln En-3=, En-3= , τn-3 =________________,
τn-3 ________________________________.
|
|
ʳ , ,
- , - .
E(t) ( ), . 2.5.
ϳ
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200__ .
3.1