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DIGITAL.CSIC
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Estudio de cinco métodos para determinar las propiedades dinámicas de capas elásticas para la mejora del aislamiento a ruido de impactos

Authors: Simón, Francisco; Anthony, David K.; Fernández, M. José;

Estudio de cinco métodos para determinar las propiedades dinámicas de capas elásticas para la mejora del aislamiento a ruido de impactos

Abstract

[ES] En la actualidad en toda Europa y en cuestiones de acústica de la edificación, se están imponiendo legislaciones que, para ser cumplidas es necesario conocer de antemano las propiedades acústicas de los distintos elementos constructivos (y los forjados no son una excepción). Por ello un campo de trabajo importante se sustenta en el desarrollo de modelos analíticos que puedan explicar el comportamiento físico de ellos. En general estos modelos utilizan como parámetros de entrada las propiedades mecánicas de las capas elásticas como son su frecuencia natural de vibración, su rigidez dinámica o su factor de pérdidas. En los últimos tiempos han proliferado para tal uso capas elásticas basadas en espumas poliméricas. Dichas espumas presentan características tales como dobles resonancias, o amortiguamiento elevado. Como consecuencia los actuales métodos normalizados de medida presentan problemas en su aplicación. Por ello, en este trabajo se presenta la aplicación de cinco distintos métodos para el análisis de algunas de estas propiedades en dos tipos diferentes de muestras de poliuretano.

[EN] New legislation all over Europe makes the prediction of the transmission level of impact sounds of flooring very necessary. This is why analytical models are a very important active research area. In general, these models use the mechanical properties of elastic layers as these can predict the dynamic stiffness and loss factors required. Also, elastic layers based on polymer foams have recently increased in prevalence. The measurement of the mechanical properties of these materials presents problems such as a double resonance peak in the impact response spectrum. As a consequence it is difficult to apply these methods to such samples, and these problems must be overcome. In this paper, a comparison is presented of five different methods of determining the resonant frequency and the damping of such materials when loaded by a mass plate and subjected to impact according to a current Standard. A brief statistical-based analysis is performed to study the behaviour and the variability in the data sets.

6 pp.-- PACS nr.: 43.55.Vj, 43.40.At.-- Comunicación presentada en los siguientes congresos: XXXVII Congreso Nacional de Acústica – TecniAcústica 2006. EAA Symposium on Architectural Acoustics (Gandía, Valencia, 18-20 Octubre 2006).

El presente trabajo se ha realizado con el soporte económico del Proyecto del Plan Nacional con referencia BIA2004-07102-C0301.

Publicado en número especial de la Revista de Acústica: Vol. 37, núm. 3-4 (2006).

Peer reviewed

Country
Spain
Related Organizations
Keywords

Flooring, Resonant frequency, Amortiguamiento, Impact sounds, Nivel de transmisión, Propiedades mecánicas, Frecuencia de resonancia, Espumas poliméricas, Mechanical properties, Elastic layers, Damping, Forjados, Loss factors, Polymer foams, Rigidez dinámica, Transmission level, Ruido de impactos, Dynamic stiffness, Capas elásticas, Factor de pérdidas

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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