. , . . ( d1) ( d) R R (. 4.12); , .
. , α [20]. α > α, , , . , ( ).
, , , , , . , , .
. 4.12
- , - 1,5...2 . , . 3.43.
[10, 20]:
) σp = 2,5...3,0 ( ) σp = 2,0...2,5 ( );
) σu = 1,9...2,6;
) τ = 1,8...2,5;
) σ = 0,8...1,1 (σ < 1 ).
, , .
, . . . , , , . .
|
|
(. 12)
:
900;
1000 ;
-437
(σ/100 = 700 1000 : ρ = 8,2.103 /3);
i = 4;
t = 3,6.10-3 ;
h = 1,6.10-3 ;
b1 = 36.10-3 ,
b2 = 33,7.10-3 ,
b3 = 32.10-3 ,
b4 = 30,3.10-3;
d1 = 11,3.10-3;
d = 12.10-3 ;
z = 80;
r = 0,6.10-3 ;
ε = 0,15.10-3;
H = 14,4.10-3 ;
α = 30;
β = 15;
γ = 10;
F0 = 1,26.10-4 2;
F5 = 0,76.10-4 2;
R, = 0,316 ;
R0 = 0,267 ;
R5 = 0,363 ;
R = 0,252 ;
l = 0,0942 ;
= 8500 -1 (ω = 890,1 1/)