Numerical evaluation of the vibration reduction index for structural joints

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Title: Numerical evaluation of the vibration reduction index for structural joints
Authors: Ramis-Soriano, Jaime | Segovia-Eulogio, Enrique-Gonzalo | Alba Fernández, Jesús | Carbajo San Martín, Jesús | Godinho, Luís
Research Group/s: Acústica Aplicada | Grupo de Ensayo, Simulación y Modelización de Estructuras (GRESMES)
Center, Department or Service: Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad de Alicante. Departamento de Ingeniería Civil
Keywords: Finite Element Model | Vibration reduction | Structural joints
Knowledge Area: Física Aplicada | Mecánica de Medios Contínuos y Teoría de Estructuras
Issue Date: 2012
Publisher: Polish Academy of Sciences | Institute of Fundamental Technological Research
Citation: Archives of Acoustics. 2012, 37(2): 189-197. doi:10.2478/v10168-012-0025-4
Abstract: The present paper addresses the analysis of structural vibration transmission in the presence of structural joints. The problem is tackled from a numerical point of view, analyzing some scenarios by using finite element models. The numerical results obtained making use of this process are then compared with those evaluated using the EN 12354 standard vibration reduction index concept. It is shown that, even for the simplest cases, the behavior of a structural joint is complex and evidences the frequency dependence. Comparison with results obtained by empirical formulas reveals that those of the standards cannot accurately reproduce the expected behavior, and thus indicate that alternative complementary calculation procedures are required. A simple methodology to estimate the difference between numerical and standard predictions is here proposed allowing the calculation of an adaptation term that makes both approaches converge. This term was found to be solution-dependent, and thus should be evaluated for each structure.
Sponsor: This work was supported by the Ministry of Science and Innovation (Spain) under the Project BIA2010-17723 and by the University of Alicante under the Project GRE10-29.
URI: http://hdl.handle.net/10045/33728
ISSN: 0137-5075 (Print) | 2300-262X (Online)
DOI: 10.2478/v10168-012-0025-4
Language: eng
Type: info:eu-repo/semantics/article
Rights: Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN)
Peer Review: si
Publisher version: http://dx.doi.org/10.2478/v10168-012-0025-4
Appears in Collections:INV - GRESMES - Artículos de Revistas
INV - Acústica Aplicada - Artículos de Revistas

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