Design and modeling of a periodic single-phase sandwich panel for acoustic insulation applications
Sandwich and composite panels are widely adopted in acoustic applications due to their sound insulation properties that overcome mass-law-based partitions in medium–high frequency regions. A key aspect in the design procedure of acoustic panels is the control of the resonance-dominated region of the...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-11-01
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| Series: | Frontiers in Materials |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2022.1005615/full |
| _version_ | 1811221502648909824 |
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| author | Chiara Gazzola Stefano Caverni Alberto Corigliano |
| author_facet | Chiara Gazzola Stefano Caverni Alberto Corigliano |
| author_sort | Chiara Gazzola |
| collection | DOAJ |
| description | Sandwich and composite panels are widely adopted in acoustic applications due to their sound insulation properties that overcome mass-law-based partitions in medium–high frequency regions. A key aspect in the design procedure of acoustic panels is the control of the resonance-dominated region of the sound transmission loss (STL) curve. Within that frequency range, such systems usually show acoustic weakness and poor insulation performances with respect to standard single-layer solutions. In the present contribution, we want to highlight an innovative approach to the sandwich partition concept. A novel single-phase sandwich panel is realized by adopting a periodic repetition of a properly designed unit cell. The resulting internal truss structure is self-sustained, and its mechanical stiffness can be tuned to maximize the STL in the resonance-dominated region. A set of parametric analyses is reported to show how the topology of the unit cell affects the noise reduction properties of the panel. Experimental validation is performed on a nylon 3D-printed prototype. The proposed panel is then integrated with some locally resonant elements that can be adopted to further improve the low-frequency STL of the solution. Industrial and production considerations are also taken into account during the design process to make the solution industrially valid with a circular economy focus. |
| first_indexed | 2024-04-12T08:00:22Z |
| format | Article |
| id | doaj.art-ea9c4cebc0914323ac57074b8b43c4af |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-04-12T08:00:22Z |
| publishDate | 2022-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj.art-ea9c4cebc0914323ac57074b8b43c4af2022-12-22T03:41:20ZengFrontiers Media S.A.Frontiers in Materials2296-80162022-11-01910.3389/fmats.2022.10056151005615Design and modeling of a periodic single-phase sandwich panel for acoustic insulation applicationsChiara GazzolaStefano CaverniAlberto CoriglianoSandwich and composite panels are widely adopted in acoustic applications due to their sound insulation properties that overcome mass-law-based partitions in medium–high frequency regions. A key aspect in the design procedure of acoustic panels is the control of the resonance-dominated region of the sound transmission loss (STL) curve. Within that frequency range, such systems usually show acoustic weakness and poor insulation performances with respect to standard single-layer solutions. In the present contribution, we want to highlight an innovative approach to the sandwich partition concept. A novel single-phase sandwich panel is realized by adopting a periodic repetition of a properly designed unit cell. The resulting internal truss structure is self-sustained, and its mechanical stiffness can be tuned to maximize the STL in the resonance-dominated region. A set of parametric analyses is reported to show how the topology of the unit cell affects the noise reduction properties of the panel. Experimental validation is performed on a nylon 3D-printed prototype. The proposed panel is then integrated with some locally resonant elements that can be adopted to further improve the low-frequency STL of the solution. Industrial and production considerations are also taken into account during the design process to make the solution industrially valid with a circular economy focus.https://www.frontiersin.org/articles/10.3389/fmats.2022.1005615/fullsandwich panelperiodic panelssound transmission losscircular economylocally resonant material |
| spellingShingle | Chiara Gazzola Stefano Caverni Alberto Corigliano Design and modeling of a periodic single-phase sandwich panel for acoustic insulation applications Frontiers in Materials sandwich panel periodic panels sound transmission loss circular economy locally resonant material |
| title | Design and modeling of a periodic single-phase sandwich panel for acoustic insulation applications |
| title_full | Design and modeling of a periodic single-phase sandwich panel for acoustic insulation applications |
| title_fullStr | Design and modeling of a periodic single-phase sandwich panel for acoustic insulation applications |
| title_full_unstemmed | Design and modeling of a periodic single-phase sandwich panel for acoustic insulation applications |
| title_short | Design and modeling of a periodic single-phase sandwich panel for acoustic insulation applications |
| title_sort | design and modeling of a periodic single phase sandwich panel for acoustic insulation applications |
| topic | sandwich panel periodic panels sound transmission loss circular economy locally resonant material |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2022.1005615/full |
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