Academic Journal
Multi-objective optimization study on the radiated noise of thin-walled structures in marine diesel engines.
| Τίτλος: | Multi-objective optimization study on the radiated noise of thin-walled structures in marine diesel engines. |
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| Συγγραφείς: | Dai, Zheng, Du, Jingtao, Liu, Yang |
| Πηγή: | International Journal of Engine Research (Sage Publications, Ltd.); Mar2026, Vol. 27 Issue 3, p375-389, 15p |
| Περίληψη: | Marine diesel engines are the primary source of vibration and noise in ship cabins. As they develop toward higher loads and power densities, these issues can be even worse. Thin-walled structures in the engines further exacerbate the problem. However, experimental methods for vibration and noise optimization are impractical due to the engine's large size, while simulation-based approaches require extensive computational resources. Thus, developing efficient and intelligent optimization strategies for marine diesel engines' vibro-acoustic performance remains a challenge. This paper addresses the vibration and noise problem of thin-walled structures in marine diesel engines by proposing an intelligent optimization method that combines the Modal Acoustic Transfer Vector (MATV) and Multi-Objective Genetic Algorithm (MOGA). First, the Modal Acoustic Transfer Vector (MATV) can be obtained via the combination of the Modal Participation Factor (MPF) and Acoustic Transfer Vector (ATV). MATV helps identify key modal orders affecting radiated noise. Then, an optimization scheme combining anisotropic plate theory and a Multi-Objective Genetic Algorithm (MOGA) is proposed. The results show that after optimization, the acoustic contribution of the key modes is reduced by 10% while the overall average Sound Pressure Level (SPL) decreases by 12%. At the same time, the vibration intensity is reduced by 10%. These findings validate the effectiveness of the proposed method in low-vibration and low-noise design. This methodology not only offers a novel approach for the intelligent low-vibration and low-noise design of marine diesel engines but can also be extended to the low-vibration and low-noise design processes of other types of main engines and power plants. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Engine Research (Sage Publications, Ltd.) is the property of Sage Publications, Ltd. 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.) | |
| Βάση Δεδομένων: | Complementary Index |
| FullText | Text: Availability: 0 |
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| Header | DbId: edb DbLabel: Complementary Index An: 192177318 RelevancyScore: 1061 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 1060.7568359375 |
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| Items | – Name: Title Label: Title Group: Ti Data: Multi-objective optimization study on the radiated noise of thin-walled structures in marine diesel engines. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Dai%2C+Zheng%22">Dai, Zheng</searchLink><br /><searchLink fieldCode="AR" term="%22Du%2C+Jingtao%22">Du, Jingtao</searchLink><br /><searchLink fieldCode="AR" term="%22Liu%2C+Yang%22">Liu, Yang</searchLink> – Name: TitleSource Label: Source Group: Src Data: International Journal of Engine Research (Sage Publications, Ltd.); Mar2026, Vol. 27 Issue 3, p375-389, 15p – Name: Abstract Label: Abstract Group: Ab Data: Marine diesel engines are the primary source of vibration and noise in ship cabins. As they develop toward higher loads and power densities, these issues can be even worse. Thin-walled structures in the engines further exacerbate the problem. However, experimental methods for vibration and noise optimization are impractical due to the engine's large size, while simulation-based approaches require extensive computational resources. Thus, developing efficient and intelligent optimization strategies for marine diesel engines' vibro-acoustic performance remains a challenge. This paper addresses the vibration and noise problem of thin-walled structures in marine diesel engines by proposing an intelligent optimization method that combines the Modal Acoustic Transfer Vector (MATV) and Multi-Objective Genetic Algorithm (MOGA). First, the Modal Acoustic Transfer Vector (MATV) can be obtained via the combination of the Modal Participation Factor (MPF) and Acoustic Transfer Vector (ATV). MATV helps identify key modal orders affecting radiated noise. Then, an optimization scheme combining anisotropic plate theory and a Multi-Objective Genetic Algorithm (MOGA) is proposed. The results show that after optimization, the acoustic contribution of the key modes is reduced by 10% while the overall average Sound Pressure Level (SPL) decreases by 12%. At the same time, the vibration intensity is reduced by 10%. These findings validate the effectiveness of the proposed method in low-vibration and low-noise design. This methodology not only offers a novel approach for the intelligent low-vibration and low-noise design of marine diesel engines but can also be extended to the low-vibration and low-noise design processes of other types of main engines and power plants. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Group: Ab Data: <i>Copyright of International Journal of Engine Research (Sage Publications, Ltd.) is the property of Sage Publications, Ltd. 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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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1177/14680874251371799 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 375 Titles: – TitleFull: Multi-objective optimization study on the radiated noise of thin-walled structures in marine diesel engines. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Dai, Zheng – PersonEntity: Name: NameFull: Du, Jingtao – PersonEntity: Name: NameFull: Liu, Yang IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 14680874 Numbering: – Type: volume Value: 27 – Type: issue Value: 3 Titles: – TitleFull: International Journal of Engine Research (Sage Publications, Ltd.) Type: main |
| ResultId | 1 |