Powerful engineering tool for accurate noise and vibration prediction in a large frequency range

Profil Titel	Powerful engineering tool for accurate noise and vibration prediction in a large frequency range
Referenz	10 BE 0427 3H2E
Herkunftsland	Belgium
Kooperationsart	Angebot
Eintrag/Änderung	2010-06-11 / 2011-06-08
Status	Dieses Profil ist abgelaufen! Falls Sie denoch Interesse haben, kontaktieren Sie uns. (2011-12-31)

Kurzfassung

A Flemish university has developed a computationally very efficient engineering tool for the prediction and analysis of the noise and vibration performance of mechanical products. The method combines small numerical models with high accuracy and hence is more efficient and faster at low frequencies, while at higher frequencies it largely overcomes the typical constraints of conventional finite element methods. The research group is looking to benchmark the method on real-life industrial cases.

Details

The Wave Based Method (WBM) is a deterministic numerical modelling method for the analysis of steady-state (vibro-) acoustic problems. The WBM approximates the dynamic response variables (e.g. acoustic pressure, structural displacement, etc.) by a set of wave functions, which exactly satisfies the underlying mathematical equations. As a result, no fine element discretisation (meshing) is required, and still only limited approximation errors are introduced. The WBM yields very small numerical models with a very high convergence rate. WBM therefore is more efficient and faster at low frequencies, while at medium and high frequencies it largely overcomes the typical constraints of conventional finite element methods.
The WBM has been validated on several academic cases. The research group, having a well-established research experience and a worldwide reputation in the field of noise and vibration engineering, is looking for real-life engineering validation cases in order to benchmark the WBM on industrial problems.

Innovative Aspects:
Element-based methods, such as the finite element method and the boundary element method, are the most commonly used numerical modelling methods for the analysis of (vibro-) acoustic problems. The applicability of the element-based methods is limited to the low-frequency range. Problems at higher frequencies yield prohibitively large numerical models. Today, no mature prediction techniques are available for medium-frequency (vibro-) acoustic simulations, while the need from industry is ever increasing.

The WBM is innovative in a large frequency range:
- computationally more efficient, yielding faster results in the low-frequency range, with comparison to the methods currently employed.
- applicable in the medium-(and possibly high-)frequency range, still providing accurate prediction results at higher frequencies

The WBM has the potential for a reduction of the overall development time and in a faster time-to-market of mechanical products and systems.