Computer Simulation of In-Vehicle Boom Noise

Stokes, Wayne; Bretl, John; Crewe, Alun; Park, Woo Sun; Lee, Jae Young; Lee, Myung Sik

doi:10.4271/971914

Cited by 6 publications

(7 citation statements)

References 1 publication

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“…This is quite similar to where U s =structural displacement, P=fluid pressure, L s =load vector due to external loads on the structure, the solution proposed earlier by Nefske et al [27], M s =mass of structure, K s =stiffness of structure researchers have treated the seats in this way, e.g. Stokes et al [49]. However, Qian and VanBuskirk [50] have also accounted for the porosity of the seats.…”

Section: Integral Formulation And/or Non-local Discretizationsupporting

confidence: 68%

“…Van Hal et al [83] show how the FEM can be coupled to the WBM to produce a To conclude this assessment of FEM/BEM modelling, Fig. 13, which has been reproduced from interior point, when the cab was only excited by a reference [49], shows a more detailed procedure shaker.…”

Section: Integral Formulation And/or Non-local Discretizationmentioning

confidence: 99%

“…11 Boundary element mesh of the cab (reprinted hybrid acoustic model. This enables the geometrical with permission from SAE paper 971955 flexibility of the FEM to be combined with the © 1997 SAE International) computational efficiency of the WBM.To conclude this assessment of FEM/BEM modelling, Fig.13, which has been reproduced from interior point, when the cab was only excited by a reference[49], shows a more detailed procedure shaker.flowchart for use with this methodology. It can be seen that excellent agreement has been achieved up to at least 500 Hz.…”

mentioning

confidence: 99%

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The prediction of low- and mid-frequency internal road vehicle noise: A literature survey

Lalor

Priebsch²

2007

Proceedings of the Institution of Mechanical Engineers, Part D:

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Over the past 40 years the low- and mid-frequency internal noise of road vehiles has been of increasing interest to both manufacturers and customers, and there have been many papers written on the subject. It is particularly important that manufacturers are able to predict the noise at an early stage of a new design so that expensive mistakes can be avoided. This paper reviews the relevant literature published over this 40 year period and concludes that the finite element method (FEM), and/or the boundary element method (BEM) are currently the most accurate ways of predicting this noise. However, although the emphasis of this review is on the low- and mid-frequency structure-borne aspect of the noise, other prediction methods (which are normally considered to be only applicable at high frequencies) are also considered. In particular, the statistical energy analysis (SEA) is shown to be an increasingly useful tool for predicting structure-borne noise, as is the newly developed FEM/SEA hybrid method. Other essentially high-frequency techniques are also considered in this review because recent research indicates that it might be possible to apply these methods over a broader frequency range than was initially envisaged.

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Section: Integral Formulation And/or Non-local Discretizationsupporting

confidence: 68%

Section: Integral Formulation And/or Non-local Discretizationmentioning

confidence: 99%

mentioning

confidence: 99%

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The prediction of low- and mid-frequency internal road vehicle noise: A literature survey

Lalor

Priebsch²

2007

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…The principal drawback associated with finite element modeling of vehicle interior noise is the necessary compromise between finite element size and accuracy. The existing full vehicle vibro-acoustic models have more than I million degrees of freedom [19,20] and consequentially they take a long time to be developed and solved. In this regard, BEM can be considered as a useful alternative…”

Section: Introductionmentioning

confidence: 99%

Simplified Modelling of Vehicle Interior Noise: Comparison of Analytical, Numerical and Experimental Approaches

Georgiev

Krylov

Winward

2006

Journal of Low Frequency Noise, Vibration and Active Control

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The present paper describes the results of the investigation of low and medium frequency vehicle interior noise carried out using simplified structural-acoustic models. Analytical, finite element (FE) and experimental studies are presented and compared. In particular, the analytical approach is based on the formula representing the interior acoustic pressure in terms of structural and acoustic normal modes. This procedure does not take into account the effect of the enclosed air on structural vibrations. The FE analysis considers structural vibration modes, interior acoustic modes, full structural-acoustic interaction and the resulting structure-borne noise. The above-mentioned analytical and numerical results are compared with each other, and both of them are compared with the experimental results obtained for the simplified reduced-scale vehicle model "QUASICAR" developed in Loughborough University. The comparisons demonstrate some specific features of the analytical and numerical approaches and outline the acceptable limits of simplification in modelling vehicle interior noise. Although this study is concerned with structure-borne vehicle interior noise, its results and conclusions could be of interest for a wider range of engineering problems, such as building acoustics and dynamics of thin shell structures.

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“…The existing full vehicle vibro-acoustic models have more than I million degrees of freedom [19,20] and consequentially they take a long time to be developed and solved. In this regard, BEM can be considered as a useful alternative…”

Section: Introductionmentioning

confidence: 99%

Simplified Modelling of Vehicle Interior Noise: Comparison of Analytical, Numerical and Experimental Approaches

Георгиев¹,

Krylov²,

Winward³

2007

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Computer Simulation of In-Vehicle Boom Noise

Cited by 6 publications

References 1 publication

The prediction of low- and mid-frequency internal road vehicle noise: A literature survey

The prediction of low- and mid-frequency internal road vehicle noise: A literature survey

Simplified Modelling of Vehicle Interior Noise: Comparison of Analytical, Numerical and Experimental Approaches

Simplified Modelling of Vehicle Interior Noise: Comparison of Analytical, Numerical and Experimental Approaches

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