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Size-dependent vibroacoustic behavior of thermally loaded double-walled sandwich microplates with metamaterial honeycomb cores and FGPP facesheets.

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Title: Size-dependent vibroacoustic behavior of thermally loaded double-walled sandwich microplates with metamaterial honeycomb cores and FGPP facesheets.
Authors: Saffari, Peyman Roodgar1 (AUTHOR), Bodaghi, Mahdi2 (AUTHOR), Ha, Ngoc San3 (AUTHOR), Saffari, Pouyan Roodgar1 (AUTHOR) Pouyan.r@chula.ac.th, Senjuntichai, Teerapong1 (AUTHOR) Teerapong.s@chula.ac.th
Source: Acta Mechanica. Jun2026, Vol. 237 Issue 6, p2769-2798. 30p.
Subjects: Structural acoustics, Sandwich construction (Materials), Soundproofing, Piezoelectric materials, Shear (Mechanics), Mechanical loads, Strains & stresses (Mechanics)
Abstract: This work provides a thorough examination of the sound transmission loss (STL) properties of double-walled sandwich microplates including a metamaterial honeycomb core and functionally graded porous piezoelectric (FGPP) facesheets subjected to thermal loading conditions. The structural and vibroacoustic response is investigated by using a size-dependent modified strain gradient theory (MSGT) combined with a first-order shear deformation theory (FSDT) to consider size effects and shear deformations. The geometrical dimensions of the honeycomb core are systematically changed to provide a broad variety of Poisson's ratios, including positive, and negative (auxetic) values, allowing for metamaterial behavior. A modified power-law distribution model is employed to delineate the material property gradation in functionally graded piezoelectric facesheets, with four unique porosity distributions systematically altered to assess their influence on acoustic performance. The thermal effects are incorporated using a general thermomechanical coupling that considers uniform and nonuniform temperature gradients and nonlinear thermal distributions in the thickness direction. The governing equations are developed using Hamilton's principle, and the solution is achieved analytically and confirmed against literature. Parametric investigations show that electric voltage, acoustic cavity depth, temperature gradients, length scale features, honeycomb cell structure, and power-law index factors significantly influence STL performance of the microplate system. [ABSTRACT FROM AUTHOR]
Copyright of Acta Mechanica is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 194518012
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Size-dependent vibroacoustic behavior of thermally loaded double-walled sandwich microplates with metamaterial honeycomb cores and FGPP facesheets.
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  Data: <searchLink fieldCode="JN" term="%22Acta+Mechanica%22">Acta Mechanica</searchLink>. Jun2026, Vol. 237 Issue 6, p2769-2798. 30p.
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  Data: <searchLink fieldCode="DE" term="%22Structural+acoustics%22">Structural acoustics</searchLink><br /><searchLink fieldCode="DE" term="%22Sandwich+construction+%28Materials%29%22">Sandwich construction (Materials)</searchLink><br /><searchLink fieldCode="DE" term="%22Soundproofing%22">Soundproofing</searchLink><br /><searchLink fieldCode="DE" term="%22Piezoelectric+materials%22">Piezoelectric materials</searchLink><br /><searchLink fieldCode="DE" term="%22Shear+%28Mechanics%29%22">Shear (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+loads%22">Mechanical loads</searchLink><br /><searchLink fieldCode="DE" term="%22Strains+%26+stresses+%28Mechanics%29%22">Strains & stresses (Mechanics)</searchLink>
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  Data: This work provides a thorough examination of the sound transmission loss (STL) properties of double-walled sandwich microplates including a metamaterial honeycomb core and functionally graded porous piezoelectric (FGPP) facesheets subjected to thermal loading conditions. The structural and vibroacoustic response is investigated by using a size-dependent modified strain gradient theory (MSGT) combined with a first-order shear deformation theory (FSDT) to consider size effects and shear deformations. The geometrical dimensions of the honeycomb core are systematically changed to provide a broad variety of Poisson's ratios, including positive, and negative (auxetic) values, allowing for metamaterial behavior. A modified power-law distribution model is employed to delineate the material property gradation in functionally graded piezoelectric facesheets, with four unique porosity distributions systematically altered to assess their influence on acoustic performance. The thermal effects are incorporated using a general thermomechanical coupling that considers uniform and nonuniform temperature gradients and nonlinear thermal distributions in the thickness direction. The governing equations are developed using Hamilton's principle, and the solution is achieved analytically and confirmed against literature. Parametric investigations show that electric voltage, acoustic cavity depth, temperature gradients, length scale features, honeycomb cell structure, and power-law index factors significantly influence STL performance of the microplate system. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Acta Mechanica is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s00707-026-04630-8
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      – Code: eng
        Text: English
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        PageCount: 30
        StartPage: 2769
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      – SubjectFull: Structural acoustics
        Type: general
      – SubjectFull: Sandwich construction (Materials)
        Type: general
      – SubjectFull: Soundproofing
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      – SubjectFull: Piezoelectric materials
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      – SubjectFull: Shear (Mechanics)
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      – SubjectFull: Mechanical loads
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      – SubjectFull: Strains & stresses (Mechanics)
        Type: general
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      – TitleFull: Size-dependent vibroacoustic behavior of thermally loaded double-walled sandwich microplates with metamaterial honeycomb cores and FGPP facesheets.
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          Name:
            NameFull: Saffari, Peyman Roodgar
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            NameFull: Bodaghi, Mahdi
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            NameFull: Ha, Ngoc San
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            NameFull: Saffari, Pouyan Roodgar
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            NameFull: Senjuntichai, Teerapong
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            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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