, , .
6- , .
6- , rij .
, , , Rip 0, rip 0:
{ P }= [ r 1 p 0, r 2 p 0, , r 6 p 0],
.
, , . , (. 7.1, ).
{ S }= [ S 1, S 2, S 3, S 4] { Z }= [ Z 1, Z 2, Z 3, Z 4] . :
{ S } = [ R ]{ Z }.
[ R ] (. 7.1, ), -:
[ N ] = [ N 1(x), N 2(x), N 3(x), N 4(x)].
, . 6.4 7.1, , :
{ M } = [ M 1(x), M 2(x), M 3(x), M 4(x)].
, :
M (x) = EJ v'' (x),
:
{ M } = EJ [ N'' ]. (7.2)
(6.4):
rij = rji = Sò(`Mi 0 `Mj 0/ EJ) ds,
(7.2):
[ R ] = (1/ EJ) ∫{ M }{ M } dx = EJ ∫ [ N'' ][ N'' ] dx. (7.3)
, :
v (x) = Σ Ni (x) Zi = [ N ]{ Z }.
(7.4)
z3 = 1 |
z1 =1 |
z4 =1 |
z2 =1 |
. 7.1
, (6.5) , , , :
rip 0 = [S Pk Nik + ∫ q (x) Ni (x) dx ].
, :
{ P }= S Pk [ Nk ] + ∫ q (x) [ N ] dx. (7.5)
, . , 6.3, , , .
|
|
:
v (x) = [ H ] { a }, (7.6)
[ H ] = [1, x, x 2, x 3], { a } = [ a 1, a 1, a 1, a 1].
(7.4) (7.6) , x 1 = 0 x 2 = l, :
Z 1 = v (0) = 1 + a 1 x 1 + a 2 x 12 + a 3 x 13;
Z 2 = v' (0) = a 1 + 2 a 2 x 1 + 3 a 3 x 12;
Z 3 = v (l) = 1 + a 1 x 2 + a 2 x 22 + a 3 x 23;
Z 4 = v' (l) = a 1 + 2 a 2 x 2 + 3 a 3 x 22,
{ Z } = [ L ] { a },
[ L ] = [[ H (x 1)]T, [ H' (x 1)]T, [ H (x 2)]T, [ H' (x 2)]T].
{ a } = [ L ]1{ Z }
(7.6) (7.4) :
[ N ] = [ H ] [ L ]1. (7.7)
:
N 1(x) = 1 3ξ2 + 2 ξ3;
N 2(x) = l (ξ 2 ξ2 + ξ3);
N 3(x) = 1 3η 2 + 2η 3;
N 4(x) = l ( η + 2η 2 η 3),
ξ = x / l, η = (l x)/ l.
(7.7) (7.3), :
[ R ] = EJ ∫ [ N¢¢ ]T×[ N¢¢ ] dx = (EJ / l) .
(7.5). q (x) = q :
{ P } = [ P 1, P 2, P 3, P 4] = (ql /12)[ 6, l, 6, l ].
12- ,
w (x, y) = [ H ]{ a },
[ H ]= [1, x, y, x 2, xy, y 2, x 3, x 2 y, xy 2, y 3, x 3 y, xy 3].
, , : , Oz, Ox Oy.
, , , , Ox Oy .
1. .., .. : / .., ... .: - , 2002. 84.
2. .. : . / .. . : - . .., 1986. 72 .
3. .. : . / .. , .. . . : - , 2008. 72 .
4. .. : . / .. . . : - , 2008. 64 .
5. .., .. : . . (. . ) /.. , .. ; . . . - . - .: , 2013. 99 .
6. .., .. : / .. , .. . .: - , 2002. 84.
7. .., .. : 2- . . . /.. , .. . .: - , 2008. 69 .
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8. .., .. : . . ., . . . - . -, 2013. 147 .
9. .. : . / .., ... : - , 1988. 264 .
10. .. : / .. . - .: , 1986. - 448 .
11. .. / ... .: , 1989. 352.
12. .. / ... .: , 1981. 191.
13. .. : . / .., .., ... - : - , 1983. - 228 .
14. : . / . ... .: .., 1985. 367 .
15. / . ... .: ..,1972. 432.
16. .., .., .. : / .., .., ... - .: , 1984. - 208 .
17. ... . /... - 10- ., . . - .: , 1986. - 478 .
18. .., .. . .I. . . . . 4-, . . ./ .. , .. . - .: , 1971. - 424 .
19. Rakowski G. Komputerowa mechanika konstrukcji / G. Rakowski. Warszawa: Wydawnictwa Politechniki Warszawskiej, 1977. 279 .
.
........................................................................................................ 3
I. ..................................................... 4
1. .............................................................................................. 6
1.1. ........................................................... 6
1.2. ...................................................... 7
1.3. ................................................................. 8
1.4. ................................................................................. 9
1.5. 酅.12
2. 녅16
2.1. ..16
2.2. 酅.17
2.3. ..18
2.4. 酅.20
2.5. 녅20
2.6. ...21
3. 녅 25
3.1. 25
3.2. .27
3.3. ...28
3.4. 녅.32
3.5. .34
4. 녅36
4.1. ...36
4.2. 녅37
4.3. 녅...38
4.4. 녅..39
5. 셅42
5.1. 녅..42
5.2. 녅45
5.3. 셅.50
5.4. 酅.55
6. 58
6.1. 腅58
6.2. 녅.60
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6.3. 녅...61
7. 63
7.1. 녅...63
7.2. 녅.65
8. ...67
8.1. ...67
8.2. ...68
8.3. ...71
I. ................................... 73
1. ........................................................................................... 74
1.1. .......................... 74
1.2. ........................................ 74
1.3. .................................................................... 76
1.4. .............................................. 78
1.5. . ............................................................ 80
1.6. . .......................................... 82
2. ............................................... 85
2.1. .............................................................. 85
2.2. . ................................................ 87
2.3. ............................................. 88
2.4. ......................................................................... 90
3. .................................................................................. 92
3.1. .............................................................. 92
3.2. ........................................................................ 93
3.3. Q ................................................................... 94
3.4. .............................................................. 96
4. .................................. 102
4.1. ........................................................ 102
4.2. ............................................................. 103
4.3. ................... 104
4.4. .............................................. 104
5. ........................................ 107
5.1. ..................................................................... 107
5.2. .......................................................... 108
5.3. ............................................................... 110
5.4. ......................................................... 111
6. ........................................ 113
6.1. ..................................................................... 113
6.2. ..................................................................... 115
6.3. ................................................ 117
7. .......................................................... 119
8. ........................... 121
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8.1. ................................ 121
8.2. ......................................................... 123
8.3. ....................................................... 124
8.4. ............................................................................ 126
8.5. .............................................................. 130
9. .................................................... 131
10. ............................................................ 133
10.1. ................................................................................... 133
10.2. ..................................................................... 135
10.3. ...................... 137
11. ............................................... 140
11.1. ..................... 140
11.2. ........ 141
11.3. ............................. 143
III. ................................................... 147
1. ......................................................................................... 148
1.1. ................................ 148
1.2. ............................................. 149
1.3. ............................... 162
2. .............. 165
2.1. .................................... 165
2.2. ........................................................... 165
2.3. ...................................................................... 175
2.4. ......................................................... 180
3. .............................................. 184
3.1. , ................................... 184
3.2. , ..................... 186
3.3. ....................................... 188
3.3. ....................................... 188
3.4. .................. 192
3.5. -............................................................ 194
3.6. ..................................................................... 195
3.7. ............................................. 198