NOISE RADIATION
description
Transcript of NOISE RADIATION
![Page 1: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/1.jpg)
NOISE RADIATIONNOISE RADIATIONdue to resonance oscillations
Gisela Quintenz &Dr.Thomas Schneider
International CVT ConferenceSeptember 2004
G r o u p
![Page 2: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/2.jpg)
2
TABLE OF CONTENTSTABLE OF CONTENTS
OPTIMISATION
OPTIMISATIONDYNAMIC
BEHAVIORDYNAMIC
BEHAVIOR
SIMULATION
PROCESS
SIMULATION
PROCESS
TEAM
PLAY
TEAM
PLAY
![Page 3: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/3.jpg)
3
Incitation: bearing accelerations
1
2
4
Sound pressure [dB]
FE-Model
1
2
3
4
3
OVERVIEWOVERVIEWSIMULATION
PROCESS
![Page 4: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/4.jpg)
4
SPL-CURVESPL-CURVE
30
35
40
45
50
55
60
65
70
75
0 500 1000 1500 2000 2500 3000 3500
frequency [Hz]
pre
ssu
re [
dB
]
1300
Hz
1600
Hz
2150
Hz
600
Hz
Operational condition “3rd gear“
840
Hz
210
Hz
300
Hz
1940
Hz
2260
Hz
DYNAMIC
BEHAVIOR
![Page 5: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/5.jpg)
5
VERTICAL BENDINGVERTICAL BENDING214 Hz
DYNAMIC
BEHAVIOR
![Page 6: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/6.jpg)
6
600 Hz
DYNAMIC
BEHAVIOR
BEARING OSCILLATIONBEARING OSCILLATION
![Page 7: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/7.jpg)
7
600 Hz
DYNAMIC
BEHAVIOR
BEARING OSCILLATIONBEARING OSCILLATION
![Page 8: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/8.jpg)
8
DYNAMIC
BEHAVIOR
BEARING OSCILLATION WITH
ASSEMBLY INTERACTION
BEARING OSCILLATION WITH
ASSEMBLY INTERACTION
![Page 9: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/9.jpg)
9
BEARING BRACKETBEARING BRACKET1300 Hz
DYNAMIC
BEHAVIOR
![Page 10: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/10.jpg)
10
FLANGE OSCILLATIONFLANGE OSCILLATION1600 Hz
DYNAMIC
BEHAVIOR
![Page 11: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/11.jpg)
11
PULLEY TORSIONPULLEY TORSION1940 / 2150 Hz
DYNAMIC
BEHAVIOR
![Page 12: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/12.jpg)
12
SHAFT BENDINGSHAFT BENDING2260 Hz
DYNAMIC
BEHAVIOR
![Page 13: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/13.jpg)
13
MOVABLE SHEAVEMOVABLE SHEAVE3290 Hz
DYNAMIC
BEHAVIOR
![Page 14: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/14.jpg)
14
FIXED SHEAVEFIXED SHEAVE4150 Hz
DYNAMIC
BEHAVIOR
![Page 15: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/15.jpg)
15
40
45
50
55
60
65
70
75
1000 1500 2000 2500 3000
frequency [Hz]
pres
sure
[dB
]
____ Basis
____ Damping Layer
OPTIMISATION DAMPING LAYERDAMPING LAYER(broadband effect)
![Page 16: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/16.jpg)
16
SPL -5 dB
OPTIMISATION FLANGE DESIGNFLANGE DESIGN1300 Hz
![Page 17: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/17.jpg)
17
OPTIMISATION FLANGE DESIGNFLANGE DESIGN
SPL -6 dB
1600 Hz
![Page 18: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/18.jpg)
18
OPTIMISATION MOVABLE SHEAVEMOVABLE SHEAVE3290 Hz
![Page 19: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/19.jpg)
19
OPTIMISATION FIXED SHEAVEFIXED SHEAVE4150 Hz
![Page 20: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/20.jpg)
20
CAE & TEST:VALIDATION RESULTS
CAE & TEST:VALIDATION RESULTS
average all Micros
Frequency [Hz]
Pre
ssu
re [
dB
]
____ calculation results
____ test rig measurements
5 dB
TEAM
PLAY
![Page 21: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/21.jpg)
TEAM
PLAY
TESTCAE
DESIGN
MEMBERS OF THE OPTIMISATION TEAM
MEMBERS OF THE OPTIMISATION TEAM
21
![Page 22: NOISE RADIATION](https://reader036.fdocuments.us/reader036/viewer/2022062309/56815a91550346895dc80760/html5/thumbnails/22.jpg)
Thank you for your attention!Thank you for your attention!
G r o u p