Abstract

This study proposes an input decoupling analysis method based on the pulse test and the traditional operational transfer path analysis (OTPA) method for the OTPA transmission path analysis when the input is strongly coupled, and the algorithm is verified for analysis optimization of results. An experimental model of the dual excitation source is established in the laboratory. Experimental comparison studies show that the OTPA method, which is based on signal decoupling, inhibits the influence of cross-coupling among the source signals during OTPA analysis and effectively improves the accuracy of the transmission path test and analysis. The OTPA method is applied to analyze the transfer path of the vibration and noise of the carriages of the electric multiple unit (EMU) train (a high-speed train in China). The false peak frequency in the traditional OTPA method is eliminated, and the accuracy of the analysis is improved.

References

1.
Albert
,
K.
,
Jakob
,
P.
, and
Martin
,
L.
,
2012
, “
Operational Transfer Path Analysis Predicting Contributions to the Vehicle Interior Noise for Different Excitations From the Same Sound Source
,”
INTER-NOISE 2012
,
New York City
,
Aug. 19–22
, pp.
9849
9860
.
2.
Yoshida
,
J.
, and
Tanaka
,
K.
,
2016
, “
Contribution Analysis of Vibration Mode Utilizing Operational TPA
,”
Mech. Eng. J.
,
3
(
1
), Paper No.15-00589, pp.
1
15
. 10.1299/mej.15-00589
3.
Yujun
,
B.
,
Cong
,
L.
, and
Hong
,
Y.
,
2014
, “
Analysis of the Noise Source and Transmission Path of High Speed EMU
,”
Railway Tech. Supervision
,
42
(
5
), pp.
41
45
.
4.
Rosen
,
N. B.
, and
Leclere
,
Q.
,
2013
, “
On the Use of Artificial Excitation in Operational Transfer Path Analysis
,”
Appl. Acoustics
,
74
(
10
), pp.
1167
1174
. 10.1016/j.apacoust.2013.04.011
5.
Andrea
,
G.
, and
Martin
,
L.
,
2016
, “
Operational Transfer Path Analysis: Interpretation and Understanding of the Measurement Results Using Response Modification Analysis (RMA)
,”
9th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference
,
Graz, Austria
,
July 26
, pp.
1
11
. https://dx.doi.org/10.4271/2016-01-1823
6.
Behdinan
,
K.
, and
Mashayekhi
,
M. J.
,
2018
, “
Analytical Transmissibility Based Transfer Path Analysis for Multi-Energy-Domain Systems Using Bond Graphs
,”
J. Vib. Control.
,
24
(
13
), pp.
2927
2937
. 10.1177/1077546317696362
7.
Vanhollebeke
,
F.
, Peeters, J., Vandepitte, D., and Desmet, W.
,
2015
, “
Using Transfer Path Analysis to Assess the Influence of Bearings on Structural Vibrations of a Wind Turbine Gearbox
,”
Wind Energy
,
18
(
5
), pp.
797
810
. 10.1002/we.1729
8.
Tu
,
X. Y.
, Wang, J., Zhu, Z., and Yang, W.
,
2017
, “
Operational Transfer Path Analysis on the Fuel Tank Sloshing Noise of Automotives
,”
J. Vib. Shock
,
36
(
18
), pp.
184
188
.
9.
Wei
,
C.
,
Yingying
,
L.
, and
Zhousuo
,
Z.
,
2016
, “
Tikhonov Regularization-Based Operational Transfer Path Analysis
,”
Mech. Syst. Signal Process.
,
75
(
1
), pp.
494
514
.
10.
Hohenberger
,
T.
, and
Lohrmann
,
M.
,
2008
, “
Operational Transfer Path Analysis: Comparison With Conventional Methods
,”
J. Acoust. Soc. Am.
,
123
(
5
), p.
3534
.
11.
Gert
,
D. S.
, Devriendt, C., Guillaume, P., and Pruyt, E.
,
2010
, “
Operational Transfer Path Analysis
,”
Mech. Syst. Signal Process.
,
24
(
2
), pp.
416
431
.
12.
Ossipov
,
A.
, and
De Klerk
,
D.
,
2010
, “
Operational Transfer Path Analysis: Theory, Guidelines and Tire Noise Application
,”
Mech. Syst. Signal Process.
,
24
(
7
), pp.
1950
1962
. 10.1016/j.ymssp.2010.05.009
13.
Chen
,
J.-Q.
,
Chou
,
M.
, and
Lan
,
F.-C.
,
2015
, “
Improvement of Operational-X Transfer Path Analysis Method
,”
J. Vib. Shock
,
34
(
8
), pp.
129
133
and 173.
14.
Rodríguez
,
P. V.
,
Sapena
,
J.
, and
Magrans
,
F. X.
,
2016
, “
OTPA Method Weakness in Real Case Applications
,”
Proceedings of the INTER-NOISE 2016—45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future
,
Hamburg, Germany
,
Aug. 21−24
, pp.
5922
5930
.
15.
Janssens
,
K.
,
Gajdatsy
,
P.
,
Gielen
,
L.
,
Mas
,
P.
,
Britte
,
L.
,
Desmet
,
W.
, and
Van der Auweraer
,
H.
,
2011
, “
OPAX: A new Transfer Path Analysis Method Based on Parametric Load Models
,”
Mech. Syst. Signal Process.
,
25
(
4
), pp.
1321
1338
. 10.1016/j.ymssp.2010.10.014
You do not currently have access to this content.