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Profile: Powerful engineering tool for accurate noise and vibration prediction in a large frequency range - 2010-1823 |
Input date: |
Friday, June 11, 2010
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Last update: |
Friday, June 11, 2010
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Deadline: |
Tuesday, May 31, 2011
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Type of profile: |
TO
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| Title: |
Powerful engineering tool for accurate noise and vibration prediction in a large frequency range
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| Abstract: |
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.
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| Description: |
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.
Current Stage of Development
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Development phase - Laboratory tested
RTD programme
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National Programmes
Intellectual Property Rights
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Secret know-how
The technology is property of the university. Several public scientific publications on the method are available.
Organisation/Company Type
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Research institute/University
Organisation/Company Size
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> 500
Application Domain(s)
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Market Applications
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MA Keywords:
CAD/CAM, CAE systems; Industrial Equipment and Machinery; Industrial trucks and tractors; Motor vehicles, transportation equipment and parts; Engineering services;
MA Keyword Codes:
002002001; 008003; 008003004; 009001005; 009003001;
MA Highlights:
Ever more restrictive legal regulations regarding noise and vibration emissions and immissions, as well as the growing customer demand for noise and vibration comfort, force design engineers to take into account the vibro-acoustic behaviour of products and processes in design optimisation. The use of numerical modelling tools to assist in this design optimisation has become common practice.
The WBM is a generally applicable method for the analysis of steady-state (vibro-)acoustic problems. Each market that encounters this kind of problems is a possible candidate market for the WBM.
- Possible sectors: automotive, aeronautic, machine design, mechanical design...
- typical industrial partners: OEM's, suppliers of mechanical systems: vehicle manufacturers, manufacturing machine builders, gearbox constructors, loudspeaker design companies, trucks and buses, acoustic absorbent material developers,...
- typical problems to be solved: frequency analysis of acoustic, structural-acoustic, structural-dynamic and acoustic absorbent problems.
Collaboration Type
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Testing of new applications; Adaptation to specific needs; Engineering;
Collaboration Comments
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The WBM-researchers are looking for industrial partners (specialised SME's, R&D depts of large enterprises) encountering steady-state (vibro-) acoustic problems and tackling them using state-of-the-art numerical modelling methods. The partners should provide existing numerical models of the problem and/or relevant experimental databases, or at least sufficient information for constructing a numerical model from scratch. The WBM will then be validated on the problem at hand, and be compared with other (element-based) prediction techniques.
Country of origin
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Belgium
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