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Optimizing Vehicle NVH Using Multi-Dimensional Source Path Contributor Paradigm.
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 13, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Automotive Industry is moving towards lightweight vehicle design with more powerful engines. This is increasing a demand for more optimized NVH design. Source-Path-Contributor (SPC) analysis is one of the ways to draw a holistic picture of any NVH problem.
In this paper, an NVH problem of low frequency booming noise and steering vibration has been studied in a development vehicle. All three dimensions of SPC paradigm were looked at to propose a feasible and optimized solution at each level of Source, Path and Contributor model.
A classical transfer path analysis (TPA) has been done to identify the highest contributing path: transmission mount and suspension arm. Optimization of suspension bush parameter has been carried out using dynamic elastomer testing facility for an improved NVH performance.
After identifying source as engine a study of torsional fluctuations due to gas pressure and torsional resonances has been carried out in order to achieve a feasible solution at source.
Finally, for contributor, operation deflection shapes have been studied to identify major panels responsible for the amplification of in-cabin noise. Optimized designs of dynamic dampers have been created using CAE tools and dynamic elastomer testing machine to propose an effective and efficient solution.
This kind of approach was helpful to identify root cause at source, path and contributor levels, thereby helping to achieve an optimized NVH solution in terms of cost, weight and development feasibility.
CitationGupta, G. and Singh, V., "Optimizing Vehicle NVH Using Multi-Dimensional Source Path Contributor Paradigm.," SAE Technical Paper 2018-01-1542, 2018, https://doi.org/10.4271/2018-01-1542.
Data Sets - Support Documents
|Unnamed Dataset 1|
- de Melo , F.X. and de OliveiraMorgan , L.P. R. Development of a Test Bench for Vibro-Acoustic Studies: TPA Study Case Proceedings of ISMA2012-USD2012
- Kim , S.J. and Lee , S.K. Prediction of Interior Noise by Excitation Force of the PowerTrain Based on Hybrid Transfer Path Analysis International Journal of Automotive Technology 9 5 577 583 2008
- Pant , A. , Jain , C.P. , and Panda , D. Numerical Modeling of Critical Path Contribution for NVH Prediction of Vehicle SAE Technical Paper 2013-01-2802 2013 10.4271/2013-01-2802
- Schulze-Fehrenbach , D. , Rumpel , T. , and Spengler , R. Low-Speed Boom Noise - Escalating Relevance According to CO 2 - Targets and High Torque Engines SAE Technical Paper 2012-01-1547 2012 10.4271/2012-01-1547
- Chatterjee , J. , Vaddi , Y.K. , and Jain , C.P. Design for Improvement in Steering Vibration Performance in a Passenger Vehicle SAE Technical Paper 2017-01-0439 2017 10.4271/2017-01-0439