A numerical and experimental study on passive damping of a 3D structure using viscoelastic materials

M.W.L.M. Rijnen, F. Pasteuning, R.H.B. Fey, G. Schothorst, van, H. Nijmeijer

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)
6 Downloads (Pure)

Abstract

Structural vibrations often cause problems in high precision instruments, which may be solved by introducing passive damping. In this paper, different ways of introducing passive damping via viscoelastic materials (VEM) are discussed. Discrete damping elements and constrained layer (CL) configurations are selected and used to efficiently damp an open aluminum box. The steady-state dynamics of the box, including frequency dependent VEM properties, are simulated using a finite element (FE) model. This model is used to find a design that introduces high damping while taking into account design constraints. The simulation results are experimentally validated using both modal parameters and frequency response functions (FRFs). For the computation of model based FRFs, a new method based on modal superposition and frequency interpolation of modal parameters is proposed. Model based results and experimental results show good resemblance, even without updating the model with deviations in the realized structure.
Original languageEnglish
Title of host publicationLeuven Conference on Noise and Vibration Engineering (ISMA 2014), September 15-17, 2014, Leuven, Belgium,
Pages605-618
Publication statusPublished - 2014
Event26th International Conference on Noise and Vibration Engineering (ISMA 2014) - Leuven, Belgium
Duration: 15 Sep 201417 Sep 2014
Conference number: 26

Conference

Conference26th International Conference on Noise and Vibration Engineering (ISMA 2014)
Abbreviated titleISMA 2014
Country/TerritoryBelgium
CityLeuven
Period15/09/1417/09/14

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