Numerische Berechnung der direkten Schallübertragung unter Verwendung eines kombinierten Finite Elemente - Statistische Energie Analyse Ansatzes

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschungBegutachtung

Abstract

The finite element method and the statistical energy analysis are commonly used to calculate sound transmission in building acoustics. At lower frequencies the finite element method allows an accurate prediction of the modal behaviour of the analysed constructions. Investigations at higher frequencies require a reduction of the maximal element sizes to allow a correct representation of the corresponding wavelengths. As a result the computation times increase and the practical usage of finite element method is limited. Alternatively the statistical energy analysis allows efficient acoustic calculations especially at mid and high frequencies. For this purpose requirements like a sufficient modal density and modal overlap within the investigated frequency bands have to be fulfilled. At low frequencies these requirements cannot be met due to the modal behaviour of the single components of the construction. Taking into account all these aspects, only a combination of both methods leads to calculations covering an extended frequency range at the scope of building acoustics. In this paper, an approach for the combination of these two methods is proposed using a specialized numerical computing environment. The frequency ranges, where the single methods produce reliable results are determined by an advanced analysis of the vibration behaviour of the components. The obtained results are compared to measurements with focus on a comprehensible construction. The investigations show that an appropriate combination of the two calculation methods can lead to efficient and more accurate results. Therefore the applicability of calculations at building acoustics is increased especially for commonly used constructions.
Titel in ÜbersetzungNumerische Berechnung der direkten Schallübertragung unter Verwendung eines kombinierten Finite Elemente - Statistische Energie Analyse Ansatzes
Originalspracheenglisch
TitelPROCEEDINGS OF THE CESBP Central European Symposium on Building Physics AND BauSIM 2016
Herausgeber (Verlag)Fraunhofer IRB Verlag
Seiten527 - 533
Seitenumfang7
ISBN (elektronisch)978‐3‐8167‐9798‐2
PublikationsstatusVeröffentlicht - 2016

Schlagwörter

  • FEM
  • SEA
  • Direct Sound Transmission
  • Experimental Modal Analysis

ASJC Scopus subject areas

  • !!Building and Construction

Dies zitieren

Hauer, W., Buchegger, B., Ferk, H., & Kautsch, P. (2016). NUMERICAL CALCULATION OF THE DIRECT SOUND TRANSMISSION USING A COMBINED FINITE ELEMENT - STATISTICAL ENERGY ANALYSIS APPROACH. in PROCEEDINGS OF THE CESBP Central European Symposium on Building Physics AND BauSIM 2016 (S. 527 - 533). Fraunhofer IRB Verlag.

NUMERICAL CALCULATION OF THE DIRECT SOUND TRANSMISSION USING A COMBINED FINITE ELEMENT - STATISTICAL ENERGY ANALYSIS APPROACH. / Hauer, Wolfgang; Buchegger, Blasius; Ferk, Heinz; Kautsch, Peter.

PROCEEDINGS OF THE CESBP Central European Symposium on Building Physics AND BauSIM 2016. Fraunhofer IRB Verlag, 2016. S. 527 - 533.

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschungBegutachtung

Hauer, W, Buchegger, B, Ferk, H & Kautsch, P 2016, NUMERICAL CALCULATION OF THE DIRECT SOUND TRANSMISSION USING A COMBINED FINITE ELEMENT - STATISTICAL ENERGY ANALYSIS APPROACH. in PROCEEDINGS OF THE CESBP Central European Symposium on Building Physics AND BauSIM 2016. Fraunhofer IRB Verlag, S. 527 - 533.
Hauer W, Buchegger B, Ferk H, Kautsch P. NUMERICAL CALCULATION OF THE DIRECT SOUND TRANSMISSION USING A COMBINED FINITE ELEMENT - STATISTICAL ENERGY ANALYSIS APPROACH. in PROCEEDINGS OF THE CESBP Central European Symposium on Building Physics AND BauSIM 2016. Fraunhofer IRB Verlag. 2016. S. 527 - 533
Hauer, Wolfgang ; Buchegger, Blasius ; Ferk, Heinz ; Kautsch, Peter. / NUMERICAL CALCULATION OF THE DIRECT SOUND TRANSMISSION USING A COMBINED FINITE ELEMENT - STATISTICAL ENERGY ANALYSIS APPROACH. PROCEEDINGS OF THE CESBP Central European Symposium on Building Physics AND BauSIM 2016. Fraunhofer IRB Verlag, 2016. S. 527 - 533
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abstract = "The finite element method and the statistical energy analysis are commonly used to calculate sound transmission in building acoustics. At lower frequencies the finite element method allows an accurate prediction of the modal behaviour of the analysed constructions. Investigations at higher frequencies require a reduction of the maximal element sizes to allow a correct representation of the corresponding wavelengths. As a result the computation times increase and the practical usage of finite element method is limited. Alternatively the statistical energy analysis allows efficient acoustic calculations especially at mid and high frequencies. For this purpose requirements like a sufficient modal density and modal overlap within the investigated frequency bands have to be fulfilled. At low frequencies these requirements cannot be met due to the modal behaviour of the single components of the construction. Taking into account all these aspects, only a combination of both methods leads to calculations covering an extended frequency range at the scope of building acoustics. In this paper, an approach for the combination of these two methods is proposed using a specialized numerical computing environment. The frequency ranges, where the single methods produce reliable results are determined by an advanced analysis of the vibration behaviour of the components. The obtained results are compared to measurements with focus on a comprehensible construction. The investigations show that an appropriate combination of the two calculation methods can lead to efficient and more accurate results. Therefore the applicability of calculations at building acoustics is increased especially for commonly used constructions.",
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AB - The finite element method and the statistical energy analysis are commonly used to calculate sound transmission in building acoustics. At lower frequencies the finite element method allows an accurate prediction of the modal behaviour of the analysed constructions. Investigations at higher frequencies require a reduction of the maximal element sizes to allow a correct representation of the corresponding wavelengths. As a result the computation times increase and the practical usage of finite element method is limited. Alternatively the statistical energy analysis allows efficient acoustic calculations especially at mid and high frequencies. For this purpose requirements like a sufficient modal density and modal overlap within the investigated frequency bands have to be fulfilled. At low frequencies these requirements cannot be met due to the modal behaviour of the single components of the construction. Taking into account all these aspects, only a combination of both methods leads to calculations covering an extended frequency range at the scope of building acoustics. In this paper, an approach for the combination of these two methods is proposed using a specialized numerical computing environment. The frequency ranges, where the single methods produce reliable results are determined by an advanced analysis of the vibration behaviour of the components. The obtained results are compared to measurements with focus on a comprehensible construction. The investigations show that an appropriate combination of the two calculation methods can lead to efficient and more accurate results. Therefore the applicability of calculations at building acoustics is increased especially for commonly used constructions.

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