This content is not included in your SAE MOBILUS subscription, or you are not logged in.
A Combined Computational-Experimental Approach for Modelling of Coupled Vibro-Acoustic Problems
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 13, 2013 by SAE International in United States
Annotation ability available
Over the past 30 years, the computer-aided engineering (CAE) tools have been applied extensively in the automotive industry. In order to accelerate time-to-market while coping with legal limits that have become increasingly restrictive over the last decades, CAE has become an indispensable tool covering all major fields in a modern automotive product design process.
However, when tackling complex real-life engineering problems, the computational models might become rather involved and thus less efficient. Therefore, the overall trend in the automotive industry is currently heading towards combined approaches, which allow the best of the both worlds, namely the experimental measurement and numerical simulation, to be merged into one integrated scheme.
In this paper, the so-called patch transfer function (PTF) approach is adopted to solve coupled vibro-acoustic problems. In the PTF scheme, the interfaces between fluid and structure are discretised in terms of patches. This allows the different sub-systems to be characterised in a separate way by their respective surface impedance matrix. The strong mutual interaction between the structure and fluid can be accounted for using an impedance matrix coupling procedure. The novelty of the approach proposed consists in the fact that the interface impedance matrix can be determined in both experimental or computation fashion, paving the way to hybrid prediction schemes, which combine numerical models with experimentally characterised sub-systems.
CitationRejlek, J., Veronesi, G., Albert, C., Nijman, E. et al., "A Combined Computational-Experimental Approach for Modelling of Coupled Vibro-Acoustic Problems," SAE Technical Paper 2013-01-1997, 2013, https://doi.org/10.4271/2013-01-1997.
- Rejlek J. Wave Based Technique for the Numerical Mid-Frequency Modelling of Coupled, Unbounded Vibro-Acoustic Problems Ph.D. thesis Graz University of Technology 978-3-200-02547-9 2012
- Karas L. , Jalics K. , Priebsch H.-H. Vibro-Acoustic Simulation of Aluminium Foam Parts Using Multi-Scale Techniques Advanced Engineering Materials WILEY-VCH Verlag 13 11 1015 1018 2011
- Zienkiewicz O. C. , Taylor R. L. , Zhu J. Z. , Nithiarasu P. The Finite Element Method 6th Butterworth-Heinemann 978-0-7506-6431-8 2005
- Leissa A. Vibration of Plates Acoustical Society of America Woodbury, NY 978-1563962943 1993
- Fahy F. Sound and Structural Vibration: Radiation, Transmission and Response Academic Press 0122476719 2000
- Ouisse M. , Maxit L. , Cacciolati C. , and Guyader J. Patch transfer functions as a tool to couple linear acoustic problems Journal of Vibration and Acoustics 127 458 466 October 2005 10.1115/1.2013302
- Pavic G. Air-borne sound source characterization by patch impedance coupling approach Journal of Sound and Vibration 329 23 4907 4921 2010
- Aucejo M. , Maxit L. , Totaro N. , and Guyader J. Convergence acceleration using the residual shape technique when solving structure-acoustic coupling with the patch transfer functions method Computers & Structures 88 11-12 728 736 2010
- Chazot J. and Guyader J. Prediction of transmission loss of double panels with a patch-mobility method Journal of the Acoustical Society of America 121 267 278 2007
- Polyanin A. Handbook of linear partial differential equations for engineers and scientists CRC Press 2002
- Bobrovnitskii Y. I. A theorem on the representation of the field of forced vibrations of a composite elastic system Acoustical Physics 47 507 510 2001
- Albert C. Vibro-acoustic coupling of structural, porous and fluid domains based on simulation and experiment M.Sc. thesis Institute of Theoretical and Computational Physics, Graz University of Technology 2012
- de Bree H. , Leussink P. , Korthorst T. , Jansen H. , Lammerink T. , and Elwenspoek M. The μ-flown: a novel device for measuring acoustic flows Sensors and Actuators A: Physical 54 1 552 557 1996