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On the potential of the wave based method for the efficient optimisation of local vibration control treatments for structural components
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
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2012 (English)In: International Conference on Noise and Vibration Engineering 2012, ISMA 2012, including USD 2012: International Conference on Uncertainty in Structure Dynamics, Katholieke Universiteit Leuven , 2012, Vol. 3, 1985-2002 p.Conference paper (Refereed)
Abstract [en]

Local vibration absorbers, such as tuned vibration absorbers or local active control systems, can be used to reduce the response of structural components. The optimisation of the position, the number and the properties of these absorbers, is however a problem of many unknowns. This paper studies the use of an efficient simulation technique, namely the wave based method (WBM), in order to obtain these optimal parameters. In contrast to the finite element method (FEM), where the problem is divided into a large number of small elements in which the field variable is described using simple polynomial shape functions, the WBM divides the problem into a small number of domains in which exact solutions of the governing equation are used as basis functions. This approach not only leads to a numerical efficient technique for the simulation of a system response, it also has inherent advantages over the FEM in an optimisation context. This paper studies the advantages of the WBM in a gradient based optimisation scheme and applies the proposed method for the optimisation of local resonators in order to reduce the vibrational response of a simple plate.

Place, publisher, year, edition, pages
Katholieke Universiteit Leuven , 2012. Vol. 3, 1985-2002 p.
Keyword [en]
Polynomials, Structural dynamics, Efficient optimisation, Efficient simulation, Governing equations, Optimal parameter, Structural component, Tuned vibration absorber, Vibrational response, Wave based method
National Category
Materials Engineering
URN: urn:nbn:se:kth:diva-165141ISI: 000321063902004ScopusID: 2-s2.0-84906346867ISBN: 9781622768257OAI: diva2:810383
25th International Conference on Noise and Vibration engineering, ISMA2012 in conjunction with the 4th International Conference on Uncertainty in Structural Dynamics, USD 2012, 17 September 2012 through 19 September 2012, Leuven, Belgium

QC 20150507

Available from: 2015-05-07 Created: 2015-04-23 Last updated: 2015-05-07Bibliographically approved

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