7 metoda deformacijskog rada

16
7. Метода деформацијског рада

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  • 7.

  • 7.

    147

    1: A , B . E F, a D M. I, . C E.

    : 3 . C , , X, . 3

    0= iX 0A =+ XX , 0= iY 0BA =+ FFY ,

    0A =M 022 =++ MXaFaFa B

    . :

    XX A = ,

    aFXFB 22

    M+= ,

    a

    FXYA 22M++= .

    . z1, z2, z3 z4 .

  • 148

    +++=a

    s

    a

    s

    a

    s

    a

    s dzMIEdzM

    IEdzM

    IEdzM

    IEU

    04

    24

    2

    03

    23

    02

    22

    01

    21 2

    12

    12

    12

    1

    s1, s2, s3 s4 ,

    111 22z

    aFXzYM As

    ++== M ,

    22222 )(22)( zFza

    aFXzFzaYM As +

    ++=+= M ,

    33 zXM s =M , M=4sM . e C

    +

    +

    +=

    =

    ==

    ===a a

    sXs

    sXs

    as

    Xs

    as

    XsX

    C

    dzX

    MM

    IEdz

    XM

    MIE

    dzX

    MM

    IEdz

    XM

    MIEX

    Ux

    2

    0 04

    4043

    303

    02

    202

    01

    101

    0

    11

    11

    11 z

    XM s =

    )( 22 za

    XM s +=

    33 z

    XM s =

    04 =

    XM s

    Cx

    += FaEI

    axC 21

    3103 M

    F . , F,

    +

    +

    +=

    =a a

    ss

    ss

    as

    s

    as

    sE

    dzX

    MM

    IEdz

    XM

    MIE

    dzF

    MM

    IEdz

    FM

    MIEF

    Uy

    2

    0 04

    443

    33

    02

    22

    01

    11

    11

    11

    .

    11

    21 z

    FM s =

    , )(21

    22 za

    FM s =

    , 03 =

    FM s , 04 =

    F

    M s

    +=a

    FEIayE

    M

    41

    613 .

  • 7.

    149

    2 je A D M, F. AB 2I, I. . .

    :

    . F, Ka

    FUyE = ,

    U . X 0,

    0==

    XE X

    Ux .

    4 . zi, i = 1..4 .

    +++=a

    s

    a

    s

    a

    s

    a

    s dzMIEdzM

    IEdzM

    IEdzM

    IEU

    2

    04

    24

    03

    23

    02

    22

    01

    21 4

    12

    12

    12

    1 ,

    si , i = 1...4 , M=1sM , M=2sM , 33 zFM s = , M+= aFzXM s 44 .

  • 150

    +

    +

    +=

    =a

    ss

    as

    s

    as

    s

    as

    sE

    dzF

    MM

    IE

    dzF

    MM

    IEdz

    FM

    MIE

    dzF

    MM

    IEFUy

    2

    04

    44

    03

    33

    02

    22

    01

    11

    21

    111

    +

    ++

    ==

    ==

    ==a

    sXs

    as

    Xs

    as

    Xs

    as

    XsE

    dzF

    MMIE

    dzF

    MMIE

    dzF

    MMIE

    dzX

    MMIEX

    Ux

    2

    04

    404

    03

    303

    02

    202

    01

    101

    211

    11

    01 =

    FM s , 02 =

    F

    M s , 33 zFM s = , a

    FM s = 4 ,

    01 =

    XM s , 02 =

    X

    M s , 03 =

    XM s , 44 zX

    M s = .

    yE xE

    +=+= aFEIadzaMaF

    IEdzzF

    IEy

    aa

    EM

    34)(

    211 32

    04

    03

    23

    == FaEIadzzaFM

    IEx

    a

    EM32

    044)(2

    1

    3 3 , , B . q C F. D 2 I, I. C.

  • 7.

    151

    : ,

    0=+= FXX Ai ,

    0=+= QFYY BAi , 0

    232 == QaFaFaM BA ,

    Q , qaQ = . , .

    FX A = , aqFYA 4

    121 += ,

    aqFFB 43

    21 += .

    C F, C Ka ,

    FUxC = ,

    U .

    3 . zi, i = 1..3 .

    ++=a

    s

    a

    s

    a

    s dzMIEdzM

    IEdzM

    IEU

    2

    03

    23

    2

    02

    22

    01

    21 2

    1221

    21 ,

    si , i = 1...3 , 2111 2

    121 zqFzM qs == ,

  • 152

    aqzaFzM s )22

    2(

    22

    222 += ,

    333 ]43

    21[ zaqFzFM Bs +== .

    Fq Fq = q z1. C

    +

    +=

    =a

    ss

    as

    s

    as

    sC dzFM

    MIE

    dzF

    MM

    IEdz

    FM

    MIEF

    Ux2

    03

    33

    2

    02

    22

    01

    11

    1211

    01 =

    FM s , 22 2

    2 zF

    M s = , 33 2

    1 zF

    M s = ,

    xC

    +=

    ++

    += aqFIE

    aaqFIE

    aaqFIE

    axC 1219

    32

    127

    31 333

    4: A, B . C F. AD 2I, I. C.

    : 3

  • 7.

    153

    X i = 0 X A = 0 , Yi = 0 Y F FA B+ = 0 , MA = 0 02 =+ ABA FaYa M 4 ,

    . FB. . z1, z2 z3 .

    ++=a

    s

    a

    s

    a

    s dzMIEdzM

    IEdzM

    IEU

    2

    03

    23

    02

    22

    2

    01

    21 4

    12

    12

    1

    s1, s2 s3 , 11 zFM s = 22 zFM Bs = aFaFM Bs 23 +=

    je

    =+

    +=

    aB

    ss

    a

    B

    ss

    a

    B

    ss

    Bdz

    FM

    MIE

    dzF

    MM

    IEdz

    FM

    MIEF

    U 2

    03

    33

    02

    22

    2

    01

    11 02

    111

    01 =

    B

    s

    FM 22 zF

    M

    B

    s = a

    FM

    B

    s = 3

    F z dz F a F a a dzBa

    B

    a

    22

    20

    30

    212

    2 0 + + =( ) FB = -3F/2 .

    Y F F FA B= + = 52 MA A Ba Y a F F a= + = 2 12 . C F . , , F,

    +

    +=

    =a

    ss

    as

    s

    as

    sC dzFM

    MIE

    dzF

    MM

    IEdz

    FM

    MIEF

    Uy2

    03

    33

    02

    22

    2

    01

    11 2

    111

  • 154

    11 z

    FM s = 02 =

    F

    M s aF

    M s 23 =

    C

    IEaFFF

    IEa

    dzaaFaFIE

    dzzFIEF

    Uy

    B

    a

    B

    a

    BC

    3112

    320

    2)2(2

    11

    33

    2

    03

    2

    01

    21

    =

    +=

    ++==

    5: ACDB A , B . C F. AC CD I, DB 2 I. C.

    : 4 . 3

    0= iX 0A =X ,

    0= iY 0BA =+ FFY , 0A =M 02 =++ ABFaFa M

    ,

    FB. . z1, z2 z3 .

    ++=a

    s

    a

    s

    a

    s dzMIEdzM

    IEdzM

    IEU

    03

    23

    02

    22

    2

    01

    21 2

    12

    122

    1

    s1, s2 s3 , o45cos11 zFM Bs = aFM Bs =2 333 )( zFzaFM Bs +=

    je

  • 7.

    155

    =+

    +=

    aB

    ss

    a

    B

    ss

    a

    B

    ss

    Bdz

    FM

    MIE

    dzF

    MM

    IEdz

    FM

    MIEF

    U

    03

    33

    02

    22

    2

    01

    11 0

    1121

    11

    22 z

    FM

    B

    s = a

    FM

    B

    s = 2 33 zaF

    M

    B

    s +=

    [ ] =++++ a Ba Ba B dzzazFzaFdzaFdzzF 20

    33330

    22

    2

    01

    21 0)()(22

    1

    FB = 5F/22 .

    FFFY2217

    BA =+= aFFaFa BA 1162 ==M .

    C F . , F,

    +

    +=

    =a

    ss

    as

    s

    as

    sC dzFM

    MIE

    dzF

    MM

    IEdz

    FM

    MIEF

    Uy0

    33

    30

    22

    2

    2

    01

    11

    1121 .

    01 =

    FM s , 02 =

    F

    M s , 33 zFM s = ,

    C

    [ ]

    IEaF

    FFIE

    a

    FFIE

    adzzzFzaFIEF

    Uy Ba

    BC

    13219

    31

    225

    65

    )31

    65()()(1

    33

    3

    03333

    =

    +=

    +=+==

    6: A , B . C F. I, AD 2I. C.

  • 156

    : 4 . 3

    0= iX 0A =X , 0= iY 0BA =+ FFY ,

    0A =M 02 =++ ABFaFa M

    , FB. . z1, z2, z3 z4 .

    +++=a

    s

    a

    s

    a

    s

    a

    s dzMIEdzM

    IEdzM

    IEdzM

    IEU

    2

    04

    24

    03

    23

    02

    22

    01

    21 4

    12

    12

    12

    1

    s1, s2, s3 s4 , 11 zFM s = , aFM s =2 , )( 333 zaFzFM Bs += , aFaFM Bs 24 = .

    je

    =

    ++

    +

    =

    a a

    B

    ss

    B

    ss

    a

    B

    ss

    a

    B

    ss

    B

    dzF

    MM

    IEdz

    FM

    MIE

    dzF

    MM

    IEdz

    FM

    MIEF

    U

    0

    2

    04

    443

    33

    02

    22

    01

    11

    02

    11

    11

    01 =

    B

    s

    FM 02 =

    B

    s

    FM 33 zF

    M

    B

    s = a

    FM

    B

    s = 4

    [ ] [ ] 0221)(

    2

    04

    03333 =++

    a

    B

    a

    B dzaaFaFdzzzaFzF ,

    02)2(21)

    32(

    33

    323

    =++ aFFaaaFaF BB FB = 17F/8 .

  • 7.

    157

    FFFY89

    BA =+= aFFaFa BA 812 ==M .

    C F . , F,

    +

    ++

    ==

    as

    s

    as

    s

    as

    s

    as

    sC dzFM

    MIE

    dzF

    MM

    IEdz

    FM

    MIE

    dzF

    MM

    IEFUy

    2

    04

    44

    03

    33

    02

    22

    01

    11 2

    1111

    .

    11 z

    FM s = , a

    FM s = 2 , )( 33 zaF

    M s += , a

    FM s 24 =

    C

    [ ][ ]

    +++==

    a

    B

    a

    B

    aa

    C

    dzaaFaFIE

    dzzazaFzFIE

    dzaFIE

    dzzFIEF

    Uy

    2

    04

    03333

    02

    2

    01

    21

    222

    1

    )()(111

    =

    =

    ++++++= FFEIaFF

    EIaFFFFFF

    EIay BBBC 8

    176

    17323

    617

    32342)

    31

    2121()

    31

    21(

    31 333

    EIFayC

    3

    4879=

    .

    7 ACDB A B . D F. I. D.

    : 3 0= iX 0A =++ FXX B ,

  • 158

    0= iY 0BA =+YY , 0A =M 02 =+ FaXaYa BB ,

    4 , . XA ,

    AB XFX = , ABB XFFXY 2

    1)(21 == ,

    AA XFY 21+= .

    . z1, z2 z3 .

    ++=a

    s

    a

    s

    a

    s dzMIEdzM

    IEdzM

    IEU

    2

    03

    23

    2

    02

    22

    01

    21 2

    12

    12

    1

    s1, s2 s3 , 11 zXM As = , aXzYM AAs += 22 , 33 zXM Bs = .

    F XA ,

    11 zXM As = , aXzXFM AAs ++= 22 )21( , 33 )( zXFM As += .

    je

    =+

    +=

    aA

    ss

    a

    A

    ss

    a

    A

    ss

    Adz

    XM

    MIE

    dzXM

    MIE

    dzXM

    MIEX

    U 2

    03

    33

    2

    02

    22

    01

    11 0

    111 .

    11 z

    XM

    A

    s = , az

    XM

    A

    s +=

    22 , 33 zX

    M

    A

    s = .

  • 7.

    159

    =++

    +++ a Aa

    AA

    a

    A dzzXFdzzaaXzXFdzzX2

    03

    23

    2

    0222

    01

    21 0)()()2

    1(

    FX A 2318= .

    FX B 235= , FYA 23

    14= , FYB 2314= .

    D

    +

    +=

    =a

    ss

    as

    s

    as

    sD dzFM

    MIE

    dzF

    MM

    IEdz

    FM

    MIEF

    Ux2

    03

    33

    2

    02

    22

    01

    11

    111 .

    01 =

    FM s , 22 zX

    M

    A

    s = , 33 zF

    M s = .

    ++

    ++=a

    A

    a

    AAD dzzXFIEdzzaXzXF

    IEx

    2

    03

    23

    2

    0222 )(

    1)()21(1 .

    IEaXFx AD

    3

    )23

    16( += IE

    aFIE

    aFxD33

    768,369260 == .

    8: A , B C o. M C. I a. CD C.

    : 4 . 3

    0= iX 0A =+ CFX , (1) 0= iY 0BA =+ FY , (2)

    0A =M 0=+ MCB FaFa (3)

  • 160

    , FC. ,

    CA FX = ,

    aFF CB

    M= ,

    aFFY CBA

    M+== .

    . z1, z2 z3 .

    ++=a

    s

    a

    s

    a

    s dzMIEdzM

    IEdzM

    IEU

    03

    23

    02

    22

    01

    21 2

    12

    12

    1

    s1, s2 s3 ,

    M=1sM 22 zFM Cs =M 333 zaFzYM CAs

    +== M je

    =+

    +=

    aC

    ss

    a

    C

    ss

    a

    C

    ss

    Cdz

    FM

    MIE

    dzF

    MM

    IEdz

    FM

    MIEF

    U

    03

    33

    02

    22

    01

    11 0

    111

    01 =

    C

    s

    FM 22 zF

    M

    C

    s = 33 zF

    M

    C

    s =

    [ ] 0)()(0

    330

    222 =

    ++ a

    C

    a

    C dzzaFdzzzF MM

    a

    FCM

    45= .

    aX M

    45

    A = , aFBM

    41= ,

    aY M

    41

    A = .

  • 7.

    161

    C M. , M,

    +

    +=

    =a

    ss

    as

    s

    as

    sC dzM

    MIE

    dzM

    MIE

    dzM

    MIE

    U

    03

    33

    02

    22

    01

    11

    111MMMM

    .

    11 =M

    sM , 12 =M

    sM , azM s 33 =

    M

    ,

    [ ]=

    ++=

    +++= MMM

    MMM

    31

    32

    )(111

    03

    23

    022

    01

    CC

    a

    C

    a

    C

    a

    C

    FaFaEIa

    dzaz

    aF

    EIdzzF

    EIdz

    EI

    IEa

    EIaaF

    EIa

    CM

    MMM2431

    45

    65

    37

    65

    37 =

    =

    =