. 2.4. .
. , . .
, Zoom In. Show All. , .
. 2.4.
, . .
X Y. ˳ . , , . ˳ .
, Zoom In. Show All. , .
, .
2.1. 0 . ʳ () . 0 0 = 38 .
2.2
:
() , , : , , cmz, .
: .
, 䳿 . ҳ . , , .
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, , , . 2.5.
. 2.5.
. ' . . , , . ., . i - p i, i- ; ( ), . i- Dhi, (Dhi> 0, , Dhi < 0, ), Dhi :
(2.22)
gd ( , gd = 10-3 /3).
. i- :
(2.23)
, , . 2.6. , , i . i , , i , . ʳ ( ) ' . .
. 2.6.
: ' 11. ³ , . ³ 1 . 1 a.
. . ֳ .
. 2.7 D , R.. R . , X , Y . ' , Rt , Rn .
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. 2.7.
.
. dS, ds, dS= ds·1. ds Q, . 2.8.
. 2.8.
䳺 , dR, dR = D pds. dR dRn, .
(2.24)
. 2.8 , :
dscosq = dx; dssinq = dy.
:
dRt = D pdy; dRn = Dpdx.
(2.24), : Rt, , Rn, .
Rn dRn :
D D .
, 0 = 0; = b; :
(2.25)
Rt, dRt (2.24) ( ) ( ) :
D D .
³, :
YB = Yin; YC = Y (2.26)
:
(2.27)
Rt R : X Y. :
(2.28)
X Y :
(2.29)
S S=1b ( ).
:
(2.30)
ϳ (2.29) (2.30) (2.28), :
(2.31)
t , (2.30) (2.25) (2.27) (2.23):
:
; (2.32)
:
(2.31)
:
(2.32)
Mz, Oz. Mz > 0, . a 䳿 , , |, : dMz = -xdRn + ydR t (2.24), :
, :
(2.33)
(2.33) .
Mz ' cmz :
(2.34)
S= b1.
(2.23) (2.34) (2.23), :
(2.35)
:
:
, (2.32) (2.31), (2.35) :
z = 0,5(Jx+Jy) (2.36)
(2.37)
, D xD = ; yD = 0:
(2.34), :
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(2.38)
.