Gear Noise and Vibration Episode 2 Part 6 ppt
Gear Noise and Vibration Episode 2 Part 6 ppt
... the
pinion
at
position
2. So
8,
=
Fpi,
+
Fp
12
and
5
2
=
Fp
12
+
Fp
22
.
As the
transmission error
is the sum of 81 and
S
2
T.E.
=
F(p
n
+2p,
2
+
p
22
)
giving
F.
Once
F ... in
Fig. 16. 3
and
then
add the
results
and the
estimates
of the
tooth
effects
as
discussed
in
section 16. 6.
16 .2 Hydraulic
vibrators
As
electromagnetic vibrators...
Gear Noise and Vibration Episode 2 Part 6 docx
... the
pinion
at
position
2. So
8,
=
Fpi,
+
Fp
12
and
5
2
=
Fp
12
+
Fp
22
.
As the
transmission error
is the sum of 81 and
S
2
T.E.
=
F(p
n
+2p,
2
+
p
22
)
giving
F.
Once
F ... in
Fig. 16. 3
and
then
add the
results
and the
estimates
of the
tooth
effects
as
discussed
in
section 16. 6.
16 .2 Hydraulic
vibrators
As
electromagnetic vibrators...
Gear Noise and Vibration Episode 1 Part 6 docx
... acceleration output
is
about
101
mV/pC
x 25
pC/g
or
25 00 mV/g acceleration
and so 25 0 mV per
m
s"
2
and the
velocity sensitivity
is
then
25 0 mV per mm
s"
1
.
At
the
other
... of
rotation
frequency.
B
2/ tooth
3/tooth
frequency
Fig 6. 6
Sketch
of
responses
to
T.E. excitation
as
tooth
frequency
varies.
Measurements
81
20 0
pF
F303-99 36...
Gear Noise and Vibration Episode 1 Part 6 pps
... internal
and
external resonances
by
measuring
the
bearing
vibrations
and the
noise simultaneously. This gives T.E.
to
bearing vibration
as
well
as
bearing vibration
to
noise. Whether
... a car
engine
and
gearbox,
the
supports
to
take
the
torque
reaction
may be
spaced
1 m
apart
and at a
full
engine torque
of 20 0 N
m
with
4:1
first
gear ratio...
Gear Noise and Vibration Episode 2 Part 1 ppsx
... revolutions
and
divide
the
resulting totals
by
25 6,
our
scale factor
is
unaltered
and we
have obtained
an
average vibration.
1 46
Chapter
9
ampl
background
noise
lines
frequency
Fig 9 .6
... non-synchronous, intermittent, random,
or
irregular vibration will behave like random vibration
and
average
to
zero.
Even
powerful
vibration such
as
engine inert...
Gear Noise and Vibration Episode 2 Part 1 docx
... result
is a
small amplitude random
"white
noise& quot;
vibration.
Analysis
Techniques
149
1
0.8
0 .6
0.4
0 .2
0
-0 .2
-0.4
-0 .6
-0.8
-1
6 8
window
length
L
10
12
Fig 9.7
Finite length records ... non-synchronous, intermittent, random,
or
irregular vibration will behave like random vibration
and
average
to
zero.
Even
powerful
vibration such
as
engine ine...
Gear Noise and Vibration Episode 2 Part 2 pptx
... as 2
jim
rms the
expected
value
of a low
harmonic
will
be as
high
as
2V (2/ 32)
which
is 0.5
urn
rms or
1.4
um
p-p.
2. 5
V-1.5
10
20 30 40 50
harmonics
of
1/rev
60 70
Fig
9 .20 ... contact.
References
1.
Newland, D.E.N.,
'Random
vibrations, spectral
and
wavelet
analysis.'
Longman, Harlow,
UK and
Wiley,
New
York, 1993.
2.
Randall, R.B.,
'...
Gear Noise and Vibration Episode 2 Part 2 ppt
... as 2
jim
rms the
expected
value
of a low
harmonic
will
be as
high
as
2V (2/ 32)
which
is 0.5
urn
rms or
1.4
um
p-p.
2. 5
V-1.5
10
20 30 40 50
harmonics
of
1/rev
60 70
Fig
9 .20 ... contact.
References
1.
Newland, D.E.N.,
'Random
vibrations, spectral
and
wavelet
analysis.'
Longman, Harlow,
UK and
Wiley,
New
York, 1993.
2.
Randall, R.B.,
'...
Gear Noise and Vibration Episode 2 Part 3 pot
... rl=r2
[Il/r2
2
]
(Al.r2)
+
[Dl/r2
2
]
(VI
r2) +
[D 12/ r2
2
]
(Vlr2-V2r2)
+
[k !2/ r2
2
]
(slr2-s2r2+te)
-
Q/r2
[I2/r2
2
]
(A2.r2)
+
[D2/r2
2
]
(V2 r2) +
[D 12/ r2
2
]
(V2r2-Vlr2)
... -k !2
(sl-s2
+te !2)
- D 12
(V1-V2) rearranges
to
11
Al + Dl
VI
+
k !2
(sl-s2+te !2)
+ D 12
(V1-V2)
=
Q and
similarly
12
A2 + D2 V2 -
k !2
(sl-s2+te !2)
-...
Gear Noise and Vibration Episode 2 Part 3 doc
... rl=r2
[Il/r2
2
]
(Al.r2)
+
[Dl/r2
2
]
(VI
r2) +
[D 12/ r2
2
]
(Vlr2-V2r2)
+
[k !2/ r2
2
]
(slr2-s2r2+te)
-
Q/r2
[I2/r2
2
]
(A2.r2)
+
[D2/r2
2
]
(V2 r2) +
[D 12/ r2
2
]
(V2r2-Vlr2)
... -k !2
(sl-s2
+te !2)
- D 12
(V1-V2) rearranges
to
11
Al + Dl
VI
+
k !2
(sl-s2+te !2)
+ D 12
(V1-V2)
=
Q and
similarly
12
A2 + D2 V2 -
k !2
(sl-s2+te !2)
-...
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