A Coupled Smoothed Finite Element-Boundary Element Method for Structural-Acoustic Analysis of Shell
Nowadays, the finite element method (FEM) – boundary element method (BEM) is used to predict the performance of structural-acoustic problem, i.e. the frequency response analysis, modal analysis. The accuracy of conventional FEM/BEM for structural-acoustic problems strongly depends on the size of the...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research Polish Academy of Sciences
2016-10-01
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| Series: | Archives of Acoustics |
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| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/1629 |
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| author | Wanyi TIAN Lingyun YAO Li LI |
| author_facet | Wanyi TIAN Lingyun YAO Li LI |
| author_sort | Wanyi TIAN |
| collection | DOAJ |
| description | Nowadays, the finite element method (FEM) – boundary element method (BEM) is used to predict the performance of structural-acoustic problem, i.e. the frequency response analysis, modal analysis. The accuracy of conventional FEM/BEM for structural-acoustic problems strongly depends on the size of the mesh, element quality, etc. As element size gets greater and distortion gets severer, the deviation of high frequency problem is also clear. In order to improve the accuracy of structural-acoustic problem, a smoothed finite-element/boundary-element coupling procedure (SFEM/BEM) is extended to analyze the structural-acoustic problem consisting of a shell structure interacting with the cavity in this paper, in which the SFEM and boundary element method (BEM) models are used to simulate the structure and the fluid, respectively. The governing equations of the structural-acoustic problems are established
by coupling the SFEM for the structure and the BEM for the fluid. The solutions of SFEM are often found to be much more accurate than those of the FEM model. Based on its attractive features, it was decided in the present work to extend SFEM further for use in structural-acoustic analysis by coupling it with BEM, the present SFEM/BEM is implemented to predict the vehicle structure-acoustic frequency response analysis, and two numerical experiments results show that the present method can provide more accurate results compared with the standard FEM/BEM using the same mesh. It indicates that the present SFEM/BEM can be widely applied to solving many engineering noise, vibration and harshness (NVH) problems with more accurate solutions. |
| format | Article |
| id | doaj-art-25fcc6cb7e844fecb16f1c536a11ac90 |
| institution | DOAJ |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2016-10-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-25fcc6cb7e844fecb16f1c536a11ac902025-08-20T03:14:36ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2016-10-0142110.1515/aoa-2017-0006A Coupled Smoothed Finite Element-Boundary Element Method for Structural-Acoustic Analysis of ShellWanyi TIAN0Lingyun YAO1Li LI2Hunan UniversitySouthwest UniversitySouthwest UniversityNowadays, the finite element method (FEM) – boundary element method (BEM) is used to predict the performance of structural-acoustic problem, i.e. the frequency response analysis, modal analysis. The accuracy of conventional FEM/BEM for structural-acoustic problems strongly depends on the size of the mesh, element quality, etc. As element size gets greater and distortion gets severer, the deviation of high frequency problem is also clear. In order to improve the accuracy of structural-acoustic problem, a smoothed finite-element/boundary-element coupling procedure (SFEM/BEM) is extended to analyze the structural-acoustic problem consisting of a shell structure interacting with the cavity in this paper, in which the SFEM and boundary element method (BEM) models are used to simulate the structure and the fluid, respectively. The governing equations of the structural-acoustic problems are established by coupling the SFEM for the structure and the BEM for the fluid. The solutions of SFEM are often found to be much more accurate than those of the FEM model. Based on its attractive features, it was decided in the present work to extend SFEM further for use in structural-acoustic analysis by coupling it with BEM, the present SFEM/BEM is implemented to predict the vehicle structure-acoustic frequency response analysis, and two numerical experiments results show that the present method can provide more accurate results compared with the standard FEM/BEM using the same mesh. It indicates that the present SFEM/BEM can be widely applied to solving many engineering noise, vibration and harshness (NVH) problems with more accurate solutions.https://acoustics.ippt.pan.pl/index.php/aa/article/view/1629Smoothed finite element method (SFEM)FEMBEMstructural-acoustic analysis |
| spellingShingle | Wanyi TIAN Lingyun YAO Li LI A Coupled Smoothed Finite Element-Boundary Element Method for Structural-Acoustic Analysis of Shell Archives of Acoustics Smoothed finite element method (SFEM) FEM BEM structural-acoustic analysis |
| title | A Coupled Smoothed Finite Element-Boundary Element Method for Structural-Acoustic Analysis of Shell |
| title_full | A Coupled Smoothed Finite Element-Boundary Element Method for Structural-Acoustic Analysis of Shell |
| title_fullStr | A Coupled Smoothed Finite Element-Boundary Element Method for Structural-Acoustic Analysis of Shell |
| title_full_unstemmed | A Coupled Smoothed Finite Element-Boundary Element Method for Structural-Acoustic Analysis of Shell |
| title_short | A Coupled Smoothed Finite Element-Boundary Element Method for Structural-Acoustic Analysis of Shell |
| title_sort | coupled smoothed finite element boundary element method for structural acoustic analysis of shell |
| topic | Smoothed finite element method (SFEM) FEM BEM structural-acoustic analysis |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/1629 |
| work_keys_str_mv | AT wanyitian acoupledsmoothedfiniteelementboundaryelementmethodforstructuralacousticanalysisofshell AT lingyunyao acoupledsmoothedfiniteelementboundaryelementmethodforstructuralacousticanalysisofshell AT lili acoupledsmoothedfiniteelementboundaryelementmethodforstructuralacousticanalysisofshell AT wanyitian coupledsmoothedfiniteelementboundaryelementmethodforstructuralacousticanalysisofshell AT lingyunyao coupledsmoothedfiniteelementboundaryelementmethodforstructuralacousticanalysisofshell AT lili coupledsmoothedfiniteelementboundaryelementmethodforstructuralacousticanalysisofshell |