PP 10 Dinamika Prenosnika

Dinamika prenosnika

wmrN1rb1

A BD

E

Varijacija krutosti zubaca

t

w

t

c

O2rb2

ra2

ra1

rb1

bb

O1

t

c

t

c

F(t )

t

F(fi)

fifI=f fI=2f fI=3f fI=4fT

( ) ( ) ( )

=

+=1

2sini

iii tffFtF pi

mr 1

rb1

A

E mr 2

rb 2

vs

v

s

/

n

Fn/b

pb=0

pb

Razliita odstupanjageometrije

Kv

2

1

dokritino kritino nadkritino

fr0,85fr 1,15fr f

0 2 4 6 8 10

m/s

Stepen

tolerancije 10 9 8

7

6

5

4

3

0 2 4 6 8

Kv Kv

10 9 8 7

6

5

4

3

1001vz

2,0

1,8

1,6

1,4

1,2

1,0

1,5

1,4

1,3

1,2

1,1

1,0

21

11

br

r

Jm = 2

2

22

br

r

Jm =

( )tFxcxbxm ee =++ &&&

21

21

rr

rre

mm

mmm

+=

mr1 mr2

cemr 1

rb 1

mr 2

rb 2

x

F(t)

F(t)1x(t)1

c b

F(t)1x(t)1

c b

F(t)2

1

2FF

T =

m

cfr pi21

=

( ) fFtF pi2sin11 =( ) fFtF pi2sin22 =

21

11

br

r

Jm =

22

22

br

r

Jm =

21

21

rr

rre

mm

mmm

+=

mr1 mr2

cemr 1

rb 1

mr 2

rb 2

x

F(t)

211125,110220

21

21 60

=

==

pipi ert

m

cf

5,20587,0106,8 2322222111 ===== brbr rJmrJm

25,15,25,25,25,2

21

21=

+

=

+=

rr

rre

mm

mmm

Hz

kg

Hz

83360

25200060

=

==

nzf Hz

n

3f 2f

f

f

fr1 fr2

fr3

fri

f/fn f/fn