( ) . , . , , . ( ).
, . () . . , . .
.1 :
(1) |
: , ,
.1. .
, :
(2) | |
0, 0, z0 .
(.1 a), (.1 ,). { S } { S" } - , .
, :
(1) , :
{ S } = { S } (3)
.
, ', ', { S } . , ; , , " (.1 ,).
{ S } ~ { R , L 0}; { S" } ~ { R, L 0}, | (4) |
- :
R = R | (5) |
L0 = L0 |
, , , , .
() , , , .
, : -, , .
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' " (', ', ', z') (", ", ", z) (.1 , ), x, , z "". . : (.1 ) , : 0 1 , x2 b .., b .
(.1 , ):
{N, Qy, Qz} {Mx, My, Mz} | (6) |
{N, Qy, Qz} {Mx, My, Mz} |
: , . :
Nx , ;
x , ;
Qz, Q ,
, z , .
(3) , :
{ P1, P2, P3, , N , N , Q y, Q y, Q z, Q z, M x, M x, | |
M y, M y, M z, M z, , Pn-1, Pn } ~ 0 | (7) |
(1) :
{ N , N , Q y, Q y, Q z, Q z, x, M x, M y, M y, z, M z }~ 0 | (8) |
3,4,5 , :
1. { N , N } ~ 0 > N = N | (9) |
2. { Q y, Q y } ~ 0 > Q y = Q y | |
3. { Q z, Q z } ~ 0 > Q z = Q z | |
4. { x, M x } ~ 0 > x = M x | |
5. { M y, M y } ~ 0 > M y = M y | |
6. { z, M z } ~ 0 > z = M z |
() .
. , ;
1. ix = N + P1x + P2x + + Pkx = 0 > N | (10) |
2. iy = Qy + P1y + P2y + + Pky = 0 > Qy | |
3. iz = Q + P1z + P2z + + Pkz = 0 > Qz | |
4. x (Pi) = Mx + Mx (Pi) + + Mx (Pk) = 0 > Mx | |
5. y (Pi) = My + My (Pi) + + My (Pk) = 0 > My | |
6. z (Pi) = Mz + Mz (Pi) + + Mz (Pk) = 0 > Mz |
' ' ' z' " " " " xz.
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