{"title":"Acoustic behavior prediction of monodisperse foams using polynomial surrogates","authors":"V. Trinh","doi":"10.31814/stce.nuce2021-15(3)-13","DOIUrl":null,"url":null,"abstract":"Acoustic properties of foams, such as macroscopic transports and sound absorption, are significantly influenced by their local morphology. The present paper develops a polynomial chaos expansion (PCE)-based surrogate model for characterizing the microstructure-properties relationships of acoustic monodisperse foams. First, the acoustic properties of the considered structures are estimated numerically by homogenization techniques using an idealized periodic unit cell and the Johnson-Champoux-Allard-Pride-Lafarge (JCAPL) model. The reference maps of transport parameters are then used to construct the PCE–based surrogates in the design space involving a set of foamy microstructural parameters such as membrane content, cell size, and porosity. Finally, after a validation phase and assessing convergence characteristics, the generated surrogates are employed to design some foam-based absorbers to illustrate the accuracy and computational efficiency of the proposed method.","PeriodicalId":17004,"journal":{"name":"Journal of Science and Technology in Civil Engineering (STCE) - NUCE","volume":"100 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Science and Technology in Civil Engineering (STCE) - NUCE","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.31814/stce.nuce2021-15(3)-13","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Acoustic properties of foams, such as macroscopic transports and sound absorption, are significantly influenced by their local morphology. The present paper develops a polynomial chaos expansion (PCE)-based surrogate model for characterizing the microstructure-properties relationships of acoustic monodisperse foams. First, the acoustic properties of the considered structures are estimated numerically by homogenization techniques using an idealized periodic unit cell and the Johnson-Champoux-Allard-Pride-Lafarge (JCAPL) model. The reference maps of transport parameters are then used to construct the PCE–based surrogates in the design space involving a set of foamy microstructural parameters such as membrane content, cell size, and porosity. Finally, after a validation phase and assessing convergence characteristics, the generated surrogates are employed to design some foam-based absorbers to illustrate the accuracy and computational efficiency of the proposed method.