䳿 . , , .
σE max = σE K ≤ [σ]E, (4)
σE max ; σE , ; K = Tmax / T , ; [σ]E ≈ 0,8 σT .
, (. ), (. ).
d1 d5, d3 d5. ³ 1 2 a b. Τ Ft, Fr Fa, d .
( 䳿 Ft, Fr Fa) :
R1t = Ft b / (a + b); R2 t = Ft a / (a + b);
R1r = Fr b / (a + b); R2r = Fr a / (a + b);
Rla = R2a = 0,5Fa d / (a + b).
:
;
. (5)
1 Fa, Rx1 = Fa.
ϳ Μ ( 䳿 Ft, Fr Fa) Τ , (. 31.10,) . , , , Mt Fr, Fa Ft:
Mr = R1r a = R2r b; Ma = Rla a; Mt = R1t a = R2t b.
Mmax :
(6)
σ, τ σc, Fa Rx1 1
, (7)
σ3Γ = 32 Mmax / (π d43); σ = 4 Fa / (π d42); τ = 16 T / (π d43). (8)
, σE , (4) .