b . b.
2 (. . 85) db2 = 2rb2 = d2 Cos αw
st et . s t , , j, .
st+et= p.
. , πd = pz, z .
,
ρ , , π, .
( ), .
/π, :
m , .
. .
. ha hf. (. . 2)
hf = ha + c (13.10)
. ≥ 1 = 0,25, 0,5 ≤ ≤ 1, = 0,35. h*f = 1,
hf = 1,25
() ha=m.
aw = 0,5(d2w d1w)
( + , ).
b =ѱbd∙d1w
b = ѱba∙aw (13.11)
. , , , .
φγ. :
, εγ εα εβ . , , , , φβ. εβ φβ τ. εγ=εα+ εβ. εγ , . εγ =1,6, , 0,4 , 0,6 .
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εα :
z1 z2 ; β , + .
Π .