Sizing optimization of microstructure of sound-absorbing poroelastic material by homogenization method
Acoustic properties of sound-absorbing poroelastic media such as sound absorption coefficient are affected by microscopic structures. However, the design method for microscopic structures of sound-absorbing poroelastic media has not been established and the trial and error approach based on prototyp...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Japanese |
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The Japan Society of Mechanical Engineers
2020-09-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/86/889/86_20-00073/_pdf/-char/en |
| _version_ | 1798015060055949312 |
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| author | Takashi YAMAMOTO Daiji KATSURA Hiroshi KUBOTA |
| author_facet | Takashi YAMAMOTO Daiji KATSURA Hiroshi KUBOTA |
| author_sort | Takashi YAMAMOTO |
| collection | DOAJ |
| description | Acoustic properties of sound-absorbing poroelastic media such as sound absorption coefficient are affected by microscopic structures. However, the design method for microscopic structures of sound-absorbing poroelastic media has not been established and the trial and error approach based on prototypes is required. In this study, a parametric optimization method to design microscopic structures of sound-absorbing poroelastic media is proposed. First, various models of microscopic structure of sound-absorbing material are generated by some sets of microscopic parameters and homogenized macroscopic properties, such as air flow resistivity and equivalent density and bulk modulus, are calculated by the homogenization method. Then, Biot’s parameters are identified for each microscopic structure of sound-absorbing poroelastic material by using non-linear least square method, and the functions that link between Biot’s parameters and the microscopic parameters, such as fiber diameter and pore radius, are derived. Finally, the microscopic parameters of poroelastic materials are optimized by using genetic algorithm (GA) to maximize sound absorption coefficient at prescribed target frequencies. In the verification of the proposed design method, the microscopic structures of fibrous porous material and foamed poroelastic material are optimized. |
| first_indexed | 2024-04-11T15:28:13Z |
| format | Article |
| id | doaj.art-c1fcf68c11dc4a4ea524426cb310eacf |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T15:28:13Z |
| publishDate | 2020-09-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-c1fcf68c11dc4a4ea524426cb310eacf2022-12-22T04:16:12ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612020-09-018688920-0007320-0007310.1299/transjsme.20-00073transjsmeSizing optimization of microstructure of sound-absorbing poroelastic material by homogenization methodTakashi YAMAMOTO0Daiji KATSURA1Hiroshi KUBOTA2Department of Mechanical Engineering, Kogakuin UniversityMazda Motor CorporationMazda Motor CorporationAcoustic properties of sound-absorbing poroelastic media such as sound absorption coefficient are affected by microscopic structures. However, the design method for microscopic structures of sound-absorbing poroelastic media has not been established and the trial and error approach based on prototypes is required. In this study, a parametric optimization method to design microscopic structures of sound-absorbing poroelastic media is proposed. First, various models of microscopic structure of sound-absorbing material are generated by some sets of microscopic parameters and homogenized macroscopic properties, such as air flow resistivity and equivalent density and bulk modulus, are calculated by the homogenization method. Then, Biot’s parameters are identified for each microscopic structure of sound-absorbing poroelastic material by using non-linear least square method, and the functions that link between Biot’s parameters and the microscopic parameters, such as fiber diameter and pore radius, are derived. Finally, the microscopic parameters of poroelastic materials are optimized by using genetic algorithm (GA) to maximize sound absorption coefficient at prescribed target frequencies. In the verification of the proposed design method, the microscopic structures of fibrous porous material and foamed poroelastic material are optimized.https://www.jstage.jst.go.jp/article/transjsme/86/889/86_20-00073/_pdf/-char/ensound absorption coefficientporoelastic materialhomogenizationmulti scaleoptimizationgenetic algorithm |
| spellingShingle | Takashi YAMAMOTO Daiji KATSURA Hiroshi KUBOTA Sizing optimization of microstructure of sound-absorbing poroelastic material by homogenization method Nihon Kikai Gakkai ronbunshu sound absorption coefficient poroelastic material homogenization multi scale optimization genetic algorithm |
| title | Sizing optimization of microstructure of sound-absorbing poroelastic material by homogenization method |
| title_full | Sizing optimization of microstructure of sound-absorbing poroelastic material by homogenization method |
| title_fullStr | Sizing optimization of microstructure of sound-absorbing poroelastic material by homogenization method |
| title_full_unstemmed | Sizing optimization of microstructure of sound-absorbing poroelastic material by homogenization method |
| title_short | Sizing optimization of microstructure of sound-absorbing poroelastic material by homogenization method |
| title_sort | sizing optimization of microstructure of sound absorbing poroelastic material by homogenization method |
| topic | sound absorption coefficient poroelastic material homogenization multi scale optimization genetic algorithm |
| url | https://www.jstage.jst.go.jp/article/transjsme/86/889/86_20-00073/_pdf/-char/en |
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