Deterministic, Hybrid and Statistical Vibro-Acoustic Models - a Methodology to Determine the VLS Payload Fairing Acoustic Behavior
Finite element method (FEM) and boundary element method (BEM) are methods usually applied on lowfrequency coupled fluid-structure analysis. On the other hand, statistical energy analysis (SEA) is a technique applied on small wavelength bandwidth predictions. However, in the midfrequency, where deter...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Instituto de Aeronáutica e Espaço (IAE)
2015-02-01
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| Series: | Journal of Aerospace Technology and Management |
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| Online Access: | https://www.jatm.com.br/jatm/article/view/392 |
| _version_ | 1811287384187207680 |
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| author | Rogerio Pirk Carlos d´Andrade Souto |
| author_facet | Rogerio Pirk Carlos d´Andrade Souto |
| author_sort | Rogerio Pirk |
| collection | DOAJ |
| description | Finite element method (FEM) and boundary element method (BEM) are methods usually applied on lowfrequency coupled fluid-structure analysis. On the other hand, statistical energy analysis (SEA) is a technique applied on small wavelength bandwidth predictions. However, in the midfrequency, where deterministic calculations are costly and confidence intervals of SEA are not satisfied, hybrid FEM/SEA models can be used. This work presents a coupled vibro-acoustic analysis methodology of the Brazilian Satellite Launcher Vehicle payload fairing. FEM/FEM model accounts for the low-frequency internal responses. The high-frequency responses are computed by a SEA coupled elasto-acoustic model, and a hybrid FEM/SEA model calculates the payload fairing mid-frequency behavior.
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| first_indexed | 2024-04-13T03:17:33Z |
| format | Article |
| id | doaj.art-7a047020a44f4e8cb13d0ba9ce4f4cf4 |
| institution | Directory Open Access Journal |
| issn | 2175-9146 |
| language | English |
| last_indexed | 2024-04-13T03:17:33Z |
| publishDate | 2015-02-01 |
| publisher | Instituto de Aeronáutica e Espaço (IAE) |
| record_format | Article |
| series | Journal of Aerospace Technology and Management |
| spelling | doaj.art-7a047020a44f4e8cb13d0ba9ce4f4cf42022-12-22T03:04:53ZengInstituto de Aeronáutica e Espaço (IAE)Journal of Aerospace Technology and Management2175-91462015-02-0171Deterministic, Hybrid and Statistical Vibro-Acoustic Models - a Methodology to Determine the VLS Payload Fairing Acoustic BehaviorRogerio Pirk0Carlos d´Andrade SoutoInstituto de Aeronautica e EspacoFinite element method (FEM) and boundary element method (BEM) are methods usually applied on lowfrequency coupled fluid-structure analysis. On the other hand, statistical energy analysis (SEA) is a technique applied on small wavelength bandwidth predictions. However, in the midfrequency, where deterministic calculations are costly and confidence intervals of SEA are not satisfied, hybrid FEM/SEA models can be used. This work presents a coupled vibro-acoustic analysis methodology of the Brazilian Satellite Launcher Vehicle payload fairing. FEM/FEM model accounts for the low-frequency internal responses. The high-frequency responses are computed by a SEA coupled elasto-acoustic model, and a hybrid FEM/SEA model calculates the payload fairing mid-frequency behavior. https://www.jatm.com.br/jatm/article/view/392LauncherPayload fairingVibro-acousticsCoupled analysisHybrid analysis.ed analysishybrid analysis |
| spellingShingle | Rogerio Pirk Carlos d´Andrade Souto Deterministic, Hybrid and Statistical Vibro-Acoustic Models - a Methodology to Determine the VLS Payload Fairing Acoustic Behavior Journal of Aerospace Technology and Management Launcher Payload fairing Vibro-acoustics Coupled analysis Hybrid analysis.ed analysis hybrid analysis |
| title | Deterministic, Hybrid and Statistical Vibro-Acoustic Models - a Methodology to Determine the VLS Payload Fairing Acoustic Behavior |
| title_full | Deterministic, Hybrid and Statistical Vibro-Acoustic Models - a Methodology to Determine the VLS Payload Fairing Acoustic Behavior |
| title_fullStr | Deterministic, Hybrid and Statistical Vibro-Acoustic Models - a Methodology to Determine the VLS Payload Fairing Acoustic Behavior |
| title_full_unstemmed | Deterministic, Hybrid and Statistical Vibro-Acoustic Models - a Methodology to Determine the VLS Payload Fairing Acoustic Behavior |
| title_short | Deterministic, Hybrid and Statistical Vibro-Acoustic Models - a Methodology to Determine the VLS Payload Fairing Acoustic Behavior |
| title_sort | deterministic hybrid and statistical vibro acoustic models a methodology to determine the vls payload fairing acoustic behavior |
| topic | Launcher Payload fairing Vibro-acoustics Coupled analysis Hybrid analysis.ed analysis hybrid analysis |
| url | https://www.jatm.com.br/jatm/article/view/392 |
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