() | ( -10) | |
,σ, | ||
, , | ||
(), ρ, /3 | ||
, ν | 0,11 | 0,33 |
, : - ( , , , . ). . , . : j = 0, 15, 30, 90. , , , , . .
ρ = υ ρ + (1- υ) ρ, (10.2)
υ ;
ρ, ρ .
. , : σ ³ 400 , σ ³ 200 , τ ³ 80 . ν = 0,3. - .
σ = υσ+(1-υ)σ΄, (10.3)
σ - ;
σ΄ , .
1 = υ + (1- υ) , (10.4)
, .
2 = . (10.5)
, :
|
|
ν 12 = υ ν + (1- υ) ν ; (10.6)
ν 21 = ν 12 2 / 1, (10.7)
ν, ν .
, , .
( υ = 0,3), , . 10.2.
10.2