Prediction of interior noise by excitation force of the powertrain based on hybrid transfer path analysis

2008 ◽  
Vol 9 (5) ◽  
pp. 577-583 ◽  
Author(s):  
S. J. Kim ◽  
S. K. Lee
Keyword(s):  
Path Analysis ◽  
Interior Noise ◽  
Transfer Path ◽  
Excitation Force ◽  
Transfer Path Analysis

Analysis and Optimization of Interior Noise Based on Transfer Path Analysis

2021 ◽  
pp. 542-551
Author(s):  
Wenqiang Liu ◽  
Junfeng Hu ◽  
Fengxin Jiang ◽  
Bing Gong ◽  
Xiaolong Deng ◽  
...  
Keyword(s):  
Path Analysis ◽  
Interior Noise ◽  
Transfer Path ◽  
Transfer Path Analysis

Mechanism of interior noise generation in high-speed vehicle based on anti-noise operational transfer path analysis

2020 ◽  
Vol 235 (1) ◽  
pp. 273-287
Author(s):  
Ningning Liu ◽  
Yuedong Sun ◽  
Yansong Wang ◽  
Pei Sun ◽  
Wenwu Li ◽  
...  
Keyword(s):  
Path Analysis ◽  
High Speed ◽  
Noise Signal ◽  
Interior Noise ◽  
Analysis Model ◽  
Noise Sources ◽  
Wind Noise ◽  
Transfer Path ◽  
Transfer Path Analysis ◽  
Path Analysis Model

Owing to the continuous development of the automobile industry, increasingly stringent performance requirements for noise, vibration, and harshness of automobiles are being presented. Interior noise control in high-speed vehicles has not been adequately addressed, owing to the complex mechanism of noise generation. As simulations performed previously focused on vehicle wind noise and tyre noise cannot adequately predict the effect on passenger ear-side noise, these issues are investigated in this study. Their effects on passengers are investigated using transfer path analysis. An anti-noise operational transfer path analysis is proposed to study noise generated in high-speed vehicles. The established anti-noise operational transfer path analysis model can eliminate crosstalks between noise source signals of different transmission paths. The model is validated by comparing the measured and calculated values of the anti-noise operational transfer path analysis model. The coherence of the input noise signal and the ear-side noise signal of the passenger is assessed using coherence analysis. By calculating and categorising the contributions of different noise sources in different locations and types, the main noise sources affecting passenger comfort are determined. The result indicates that the main noise sources affecting the passenger’s ear-side noise change from engine noise to left-A wind noise and tyre radiation noise with increasing vehicle speed, in which the proportion also increase. The proposed anti-noise operational transfer path analysis is suitable for the interior-noise analysis of high-speed vehicles, and this study may serve as a reference for future studies regarding active and passive noise control in high-speed vehicles.

Estimation of interior noise by using hybrid transfer path analysis

2008 ◽  
Vol 56 (4) ◽  
pp. 256 ◽  
Author(s):  
Sung-Jong Kim ◽  
Ki-Gug Og ◽  
Su-Gon Kim ◽  
Sang-Kwon Lee
Keyword(s):  
Path Analysis ◽  
Interior Noise ◽  
Transfer Path ◽  
Transfer Path Analysis

scholarly journals Transfer Path Analysis of Interior Noise above Bogie Area of High-speed Train

2020 ◽  
Vol 56 (4) ◽  
pp. 168
Author(s):  
GAO Yang ◽  
ZHU Ziwei ◽  
XIE Suming ◽  
NIE Jiaxing ◽  
HAN Jian ◽  
...  
Keyword(s):  
Path Analysis ◽  
High Speed ◽  
Interior Noise ◽  
High Speed Train ◽  
Transfer Path ◽  
Transfer Path Analysis

scholarly journals Improved vehicle interior structure-borne noise induced by the powertrain using parallel dry friction damper

2017 ◽  
Vol 37 (2) ◽  
pp. 295-312 ◽  
Author(s):  
Eid Saber Mohamed ◽  
Shawki Abouel-Seoud ◽  
Manar Eltantawie ◽  
Abdelfattah Mohamded ◽  
Mohamed Salah
Keyword(s):  
Path Analysis ◽  
Dry Friction ◽  
Transfer Functions ◽  
The Body ◽  
Interior Noise ◽  
Interior Structure ◽  
Friction Damper ◽  
Transfer Path ◽  
Transfer Path Analysis ◽  
Noise Vibration

Because of the higher requirements for vehicle comfort and people’s increasing ecological consciousness, research on the interior noise in a vehicle has received wide attention, among which structure-borne noise is hard to diagnose. To solve the problem, the transfer path analysis method of powertrain structure-borne noise has been systematically analyzed. By introduction of the powertrain source-path-receiver model, this method enables the researchers to estimate and study the noise, vibration, and harshness transfer functions and their operational forces. The aim is to further improve noise, vibration, and harshness with minimal negative impact on other vehicle attributes, such as ride comfort, handling, drivability, durability, etc. In this article, a parallel dry friction damper was added to the vehicle nearside powertrain mount, which is the most significant one to the receiver of passenger vehicle for improving its interior structure-borne noise induced by the engine. The test vehicle was a midsize executive vehicle. Since the structure-borne noise is composed of multiple paths, then the transfer path analysis test of the vehicle was carried out, and the transfer function and operational data at speed range started from 20 to 100 km/h were obtained. On the basis of the transfer path analysis results and the above principle, the friction damper on the body side of the nearside mount is improved by combination of the experimental transfer path analysis and the final measurements. The results indicate that a significant reduction for the A-weighted sound pressure level of the interior noise has been gained when the frictional damper was added to conventional mount.

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