Dynamic stiffness is a parameter of great importance for the assessment of the sound insulation properties of resilient materials commonly used under floating floors in dwellings. This work proposes a simplified approach that relies on an electro-mechanical circuit model for the determination of this parameter using a two-degree-of-freedom system of masses and springs. Unlike the method described in the standard ISO 9052-1, the proposed approach uses a single electrodynamic actuator both as an impulser and vibration sensor, thus reducing the instrumental requirements and yielding a more stable arrangement. By measuring the input electrical impedance of the mass-loaded actuator when coupled to a slab-material system it was possible to retrieve the mechanical mobility function thereof and thus obtain the dynamic stiffness of the material. Several materials were tested following the proposed approach, with results showing good agreement when compared to those obtained following the standardized procedure. In general, the preliminary research encourages the use of the proposed approach for characterization purposes.

An Alternative Approach to Determine the Dynamic Stiffness of Resilient Materials under Low Prestatic Load / Carbajo, Jesús; Poveda, Pedro; Segovia, Enrique; Prieto, Andrés; Río-Martín, Laura; Pastor, José Daniel; Ramis, Jaime. - In: APPLIED SCIENCES. - ISSN 2076-3417. - 14:11(2024), pp. 492501-492510. [10.3390/app14114925]

An Alternative Approach to Determine the Dynamic Stiffness of Resilient Materials under Low Prestatic Load

Río-Martín, Laura;
2024-01-01

Abstract

Dynamic stiffness is a parameter of great importance for the assessment of the sound insulation properties of resilient materials commonly used under floating floors in dwellings. This work proposes a simplified approach that relies on an electro-mechanical circuit model for the determination of this parameter using a two-degree-of-freedom system of masses and springs. Unlike the method described in the standard ISO 9052-1, the proposed approach uses a single electrodynamic actuator both as an impulser and vibration sensor, thus reducing the instrumental requirements and yielding a more stable arrangement. By measuring the input electrical impedance of the mass-loaded actuator when coupled to a slab-material system it was possible to retrieve the mechanical mobility function thereof and thus obtain the dynamic stiffness of the material. Several materials were tested following the proposed approach, with results showing good agreement when compared to those obtained following the standardized procedure. In general, the preliminary research encourages the use of the proposed approach for characterization purposes.
2024
11
Carbajo, Jesús; Poveda, Pedro; Segovia, Enrique; Prieto, Andrés; Río-Martín, Laura; Pastor, José Daniel; Ramis, Jaime...espandi
An Alternative Approach to Determine the Dynamic Stiffness of Resilient Materials under Low Prestatic Load / Carbajo, Jesús; Poveda, Pedro; Segovia, Enrique; Prieto, Andrés; Río-Martín, Laura; Pastor, José Daniel; Ramis, Jaime. - In: APPLIED SCIENCES. - ISSN 2076-3417. - 14:11(2024), pp. 492501-492510. [10.3390/app14114925]
File in questo prodotto:
File Dimensione Formato  
applsci-14-04925.pdf

accesso aperto

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Creative commons
Dimensione 1.39 MB
Formato Adobe PDF
1.39 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/438570
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
  • OpenAlex ND
social impact