MP pret sp

background image

http://www.iil.pwr.wroc.pl/zukowski

1

MOMENTY I SIŁY BRZEGOWE

PRĘT LEWOSTRONNIE UTWIERDZONY

PRAWOSTRONNIE PODPARTY PRZEGUBOWO

ij

M

ji

V

ij

V

Vij

Vji

L

M

ij

Mji

EI =const

= 0

ξ

L

F

L/2

F

L/2

F

F

ξ

L

ξ

L

F

L/n

L/n

L/n

L/n

F

F

F

F

F

L/n

L/n

L/n

L

2n

L

2n

F

F

F

ξ

L

ξ

L

ξ

L

M

L/2

M

L/2

q

1

q

2

q

q

16

/

3FL

M

ij

=

16

/

11F

V

ij

=

16

/

5F

V

ji

=

(

)

8

/

1

3

2

ξ

=

FL

M

ij

(

)

8

/

3

11

2

ξ

=

F

V

ij

(

)

8

/

3

5

2

ξ

+

=

F

V

ji

(

)

8

/

/

1 n

n

FL

M

ij

=

(

)

8

/

4

/

1

5

=

n

n

F

V

ij

(

)

8

/

4

/

1

3

+

=

n

n

F

V

ji

(

)

8

/

/

5

.

0

n

n

FL

M

ij

+

=

(

)

8

/

/

5

.

0

5

n

n

F

V

ij

+

=

(

)

8

/

/

5

.

0

3

n

n

F

V

ji

=

(

)

8

/

1

2

ξ

ξ

=

FL

M

ij

(

)

8

/

9

2

ξ

ξ

=

F

V

ij

(

)

8

/

9

2

ξ

ξ

=

F

V

ji

(

)

2

/

3

3

1

2

ξ

ξ

+

=

M

M

ij

8

/

M

M

ij

=

(

)

120

/

7

8

2

2

1

L

q

q

M

ij

+

=

(

)

40

/

9

16

2

1

L

q

q

V

ij

+

=

(

)

40

/

11

4

2

1

L

q

q

V

ji

+

=

8

/

2

qL

M

ij

=

8

/

5qL

V

ij

=

8

/

3qL

V

ji

=

15

/

2

qL

M

ij

=

5

/

2qL

V

ij

=

10

/

qL

V

ji

=

120

/

7

2

qL

M

ij

=

40

/

9qL

V

ij

=

40

/

11qL

V

ji

=

M

2

/

M

M

ij

=

L

M

V

ij

/

5

.

1

=

L

M

V

ji

/

5

.

1

=

q

(

)

(

)

2

/

1

1

2

ξ

ξ

ξ

+

=

F

V

ij

(

)(

)

2

/

1

1

ξ

ξ

ξ

=

FL

M

ij

(

)

2

/

3

2

ξ

ξ

=

F

V

ji

( )

L

M

V

ij

/

8

/

9

=

( )

L

M

V

ji

/

8

/

9

=

(

)

L

M

V

ij

/

2

/

1

3

ξ

ξ

=

(

)

L

M

V

ji

/

2

/

1

3

ξ

ξ

=


background image

http://www.iil.pwr.wroc.pl/zukowski

2

ij

M

Vij

ji

V

Vij

Vji

L

M

ij

Mji

EI =const

= 0

q

ξ

L

L/2

q

q

ξ

L

L/2

q

q

ξ

L

L/2

q

q

ξ

L

L/2

q

q

ξ

L

γ

L

γ

L

q

ξ

L

L/2

q

q

ξ

L

L/2

q

(

)

8

/

2

2

2

2

ξ

ξ

=

qL

M

ij

(

)

[

]

2

/

4

/

1

1

2

ξ

ξ

ξ

=

qL

V

ij

(

)

2

/

2

/

1

3

ξ

ξ

=

qL

V

ji

128

/

9

2

qL

M

ij

=

128

/

57

qL

V

ij

=

128

/

7

qL

V

ji

=

(

)

8

/

2

2

2

2

ξ

ξ

=

qL

M

ij

(

)

8

/

6

2

2

ξ

ξ

=

qL

V

ij

(

)

[

]

8

/

6

1

2

ξ

ξ

ξ

=

qL

V

ji

128

/

7

2

qL

M

ij

=

128

/

23

qL

V

ij

=

128

/

41

qL

V

ji

=

(

)

16

/

3

2

2

ξ

ξ

=

qL

M

ij

(

)

16

/

11

2

ξ

ξ

=

qL

V

ij

(

)

16

/

5

2

ξ

ξ

+

=

qL

V

ji

( )

[

]

120

/

5

3

20

2

2

ξ

ξ

ξ

=

qL

M

ij

(

)

[

]

40

/

5

2

/

1

2

ξ

ξ

ξ

=

qL

V

ij

(

)

40

/

5

3

ξ

ξ

=

qL

V

ji

(

)

[

]

120

/

4

15

3

40

2

2

ξ

ξ

ξ

=

qL

M

ij

(

)

[

]

40

/

4

15

2

/

1

2

ξ

ξ

ξ

=

qL

V

ij

(

)

40

/

4

15

3

ξ

ξ

=

qL

V

ji

(

)

120

/

3

10

2

2

2

ξ

ξ

=

qL

M

ij

(

)

40

/

10

2

2

ξ

ξ

=

qL

V

ij

(

)

[

]

40

/

10

2

/

1

2

ξ

ξ

ξ

=

qL

V

ji

(

)

30

/

3

5

2

2

2

ξ

ξ

=

qL

M

ij

(

)

10

/

5

2

2

ξ

ξ

=

qL

V

ij

(

)

[

]

10

/

5

2

/

1

2

ξ

ξ

ξ

=

qL

V

ji

1720

/

53

2

qL

M

ij

=

640

/

151

qL

V

ij

=

640

/

9

qL

V

ji

=

960

/

41

2

qL

M

ij

=

320

/

67

qL

V

ij

=

320

/

13

qL

V

ji

=

960

/

17

2

qL

M

ij

=

640

/

39

qL

V

ij

=

640

/

121

qL

V

ji

=

480

/

17

2

qL

M

ij

=

160

/

19

qL

V

ij

=

160

/

21

qL

V

ji

=

background image

http://www.iil.pwr.wroc.pl/zukowski

3

ij

M

Vij

ji

V

Vij

Vji

L

M

ij

Mji

EI =const

= 0

L/2

q

L/2

q

q

ξ

L

q

ξ

L

q

q

q

ξ

L

ξ

L

q

ξ

L

ξ

L

∆∆∆∆

t

g

∆∆∆∆

t

d

h

∆∆∆∆

t

g

∆∆∆∆

t

d

h

ψ

ψ

ψ

ψ

=

∆∆∆∆

/L

ϕϕϕϕ

i

ϕϕϕϕ

i

∆∆∆∆

t

g

∆∆∆∆

t

d

h

(

)

h

t

t

EI

M

g

d

T

ij

/

5

.

0

=

α

(

)

( )

Lh

t

t

EI

V

g

d

T

ij

/

5

.

0

=

α

(

)

( )

Lh

t

t

EI

V

g

d

T

ji

/

5

.

0

=

α

(

)

h

t

t

EI

M

g

d

T

ij

/

=

α

(

)

( )

Lh

t

t

EI

V

g

d

T

ij

/

=

α

(

)

( )

Lh

t

t

EI

V

g

d

T

ji

/

=

α

(

)

h

t

t

EI

M

g

d

T

ij

/

5

.

1

=

α

(

)

( )

Lh

t

t

EI

V

g

d

T

ij

/

5

.

1

=

α

(

)

( )

Lh

t

t

EI

V

g

d

T

ji

/

5

.

1

=

α

L

EI

M

ij

/

3

ψ

=

2

/

3

L

EI

V

ij

ψ

=

2

/

3

L

EI

V

ji

ψ

=

L

EI

M

i

ij

/

3

ϕ

=

2

/

3

L

EI

V

i

ij

ϕ

=

2

/

3

L

EI

V

i

ji

ϕ

=

(

)

[

]

8

/

2

1

2

2

ξ

ξ

=

qL

M

ij

(

)

[

]

8

/

4

4

5

2

ξ

ξ

ξ

=

qL

V

ij

(

)

[

]

8

/

2

4

8

2

ξ

ξ

ξ

+

=

qL

V

ji

(

)

8

/

2

2

2

ξ

ξ

=

qL

M

ij

(

)

[

]

8

/

2

2

/

1

ξ

ξ

+

=

qL

V

ij

(

)

[

]

8

/

2

2

/

1

ξ

ξ

ξ

=

qL

V

ji

(

)

8

/

3

4

2

2

ξ

ξ

=

qL

M

ij

(

)

[

]

8

/

3

4

4

ξ

ξ

ξ

+

=

qL

V

ij

(

)

[

]

8

/

3

4

4

ξ

ξ

ξ

=

qL

V

ji

64

/

3

2

qL

M

ij

=

64

/

19

qL

V

ij

=

64

/

13

qL

V

ji

=

64

/

5

2

qL

M

ij

=

64

/

21

qL

V

ij

=

64

/

11

qL

V

ji

=


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