Article(id=1281324057492697748, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1281323885077447100, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2026.02.011, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1750694400000, receivedDateStr=2025-06-24, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1783421061155, onlineDateStr=2026-07-07, pubDate=1771084800000, pubDateStr=2026-02-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1783421061155, onlineIssueDateStr=2026-07-07, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1783421061155, creator=13701087609, updateTime=1783421061155, updator=13701087609, issue=Issue{id=1281323885077447100, tenantId=1146029695717560320, journalId=1240685776644648972, year='2026', volume='30', issue='2', pageStart='177', pageEnd='340', issueExtLink='null', onlineDate='null', pubDate='1771084800000', pubDateStr='2026-02-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1783421020049, creator='13701087609', updateTime=1783422086911, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1281328359892303896, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1281323885077447100, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1281328359892303897, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1281323885077447100, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=307, endPage=314, ext={EN=ArticleExt(id=1281324057878573717, articleId=1281324057492697748, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=An improved topology optimization method to obtain excellent low-frequency sound absorption performance of underwater acoustic coatings, columnId=1241023038381158513, journalTitle=Journal of Ship Mechanics, columnName=Hydro/Structural Acoustics, runingTitle=null, highlight=null, articleAbstract=
With the continuous development of underwater detection technology towards low frequency domain, the sound absorption ability of conventional underwater acoustic coating needs to be significantly enhanced. In order to obtain better low-frequency sound absorption effect, a Topology-Shape-Topology (TST) optimization method is investigated in this paper. A new underwater acoustic coating is designed using the method which optimizes the distribution of materials in the anechoic layer. Compared with the traditional cavity-type acoustic coating, the acoustic structure designed by TST optimization method can achieve excellent sound absorption performance in the range of 200–1000 Hz. The peak value of sound absorption coefficient can come up to 0.9 at 321 Hz, and the average of sound absorption coefficient within the studied frequency range is above 0.8, resulting in an effective improvement of the low frequency sound absorption effect of the traditional underwater acoustic coating. Moreover, the underlying mechanism behind the sound absorption performance is revealed to obtain a further understanding of distribution regularities of materials. The study provides a new idea for the design of underwater acoustic coatings.
, authors=Yan YAN
1, Jun GUO
2, Yang SHANGGUAN
1, Tian-gui YE
1, Guo-yong JIN
1, Yun-tong BU
1, authorsList=Yan YAN, Jun GUO, Yang SHANGGUAN, Tian-gui YE, Guo-yong JIN, Yun-tong BU, authorCompany=null, correspAuthors=Tian-gui YE, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2026 Journal of Ship Mechanics. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1281324076316734183, articleId=1281324057492697748, tenantId=1146029695717560320, journalId=1240685776644648972, language=CN, title=水下声学覆盖层低频高吸声的改进拓扑优化方法, columnId=1241023038515376243, journalTitle=船舶力学, columnName=流体与结构声学, runingTitle=null, highlight=null, articleAbstract=
随着水下探测技术向低频方向的不断发展,传统水下声学覆盖层的吸声能力需要显著提高。为了获得较好的低频吸声效果,本文研究了一种拓扑–形状–拓扑(Topology-Shape-Topology,TST)优化方法。利用该方法可优化材料在声学覆盖层中的分布,由此设计了一种新型的水下声学覆盖层。与传统空腔型覆盖层相比,采用TST优化方法设计的覆盖层结构在200~1000 Hz范围内具有优异的吸声性能。在321 Hz处吸声系数峰值可达0.9,在研究频率范围内的吸声系数平均值在0.8以上,有效改善了传统水下声学覆盖层的低频吸声效果。此外,本文揭示了吸声特性背后的潜在机制,从而进一步掌握了材料的分布规律。该研究为水下声学覆盖层的设计提供了新的思路。
, authors=闫燕
1, 郭君
2, 上官洋
1, 叶天贵
1, 靳国永
1, 步云彤
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水下声学覆盖层及其简化模型示意图, figureFileSmall=LXsqj1YbaqwVWqqKqaW8LQ==, figureFileBig=WTa+OcVV/3N4YR9zDZ85Rg==, tableContent=null), ArticleFig(id=1281324082704659225, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=EN, label=Fig.2, caption=
Schematic of the simplified model validation and two-dimensional axisymmetric model for optimal design, figureFileSmall=k86wtCuSzhB5i/S5OXZlxw==, figureFileBig=m8VLnZFeoar5ACe5zvOU2w==, tableContent=null), ArticleFig(id=1281324082763379482, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=CN, label=图2, caption=
简化模型验证和用于优化设计的二维轴对称模型示意图, figureFileSmall=k86wtCuSzhB5i/S5OXZlxw==, figureFileBig=m8VLnZFeoar5ACe5zvOU2w==, tableContent=null), ArticleFig(id=1281324082817905435, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=EN, label=Fig.3, caption=
SIMP density penalty function, figureFileSmall=ociY4ZNjit9IQvTAU15H1A==, figureFileBig=Waby+VYm97/3JRxcwLj8cg==, tableContent=null), ArticleFig(id=1281324084428518172, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=CN, label=图3, caption=
SIMP密度惩罚函数图, figureFileSmall=ociY4ZNjit9IQvTAU15H1A==, figureFileBig=Waby+VYm97/3JRxcwLj8cg==, tableContent=null), ArticleFig(id=1281324084524987165, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=EN, label=Fig.4, caption=
Three cavity structures obtained from the initial topology optimization, figureFileSmall=bbaXtZR7NFuxC0kA7csmOg==, figureFileBig=p1+3wR6RlnymreClBsawaA==, tableContent=null), ArticleFig(id=1281324084608873246, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=CN, label=图4, caption=
初次拓扑优化得到的三种空腔结构, figureFileSmall=bbaXtZR7NFuxC0kA7csmOg==, figureFileBig=p1+3wR6RlnymreClBsawaA==, tableContent=null), ArticleFig(id=1281324084705342239, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=EN, label=Fig.5, caption=
Sound absorption coefficients of three cavity structures, figureFileSmall=ROLwWNtzFm3gBW1I39w7xQ==, figureFileBig=g5mSXuKwLQmQ5Y8CUWg8Xg==, tableContent=null), ArticleFig(id=1281324084768256800, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=CN, label=图5, caption=
三种空腔结构的吸声系数曲线, figureFileSmall=ROLwWNtzFm3gBW1I39w7xQ==, figureFileBig=g5mSXuKwLQmQ5Y8CUWg8Xg==, tableContent=null), ArticleFig(id=1281324084826977057, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=EN, label=Fig.6, caption=
Displacement vector fields corresponding to peak frequencies of sound absorption curves, figureFileSmall=rKgMFbpc+UtjswbLc5YiIQ==, figureFileBig=lwOIzT+MhMo1ulhYaL6Mog==, tableContent=null), ArticleFig(id=1281324084902474530, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=CN, label=图6, caption=
吸声曲线峰值频率对应的位移矢量场, figureFileSmall=rKgMFbpc+UtjswbLc5YiIQ==, figureFileBig=lwOIzT+MhMo1ulhYaL6Mog==, tableContent=null), ArticleFig(id=1281324085158327075, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=EN, label=Fig.7, caption=
Structure models and sound absorption coefficients after TST optimization, figureFileSmall=T3l1MOAhDKPbqODT3zM8EQ==, figureFileBig=X1k2r2WATMdKGSggh+9bfA==, tableContent=null), ArticleFig(id=1281324085233824548, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=CN, label=图7, caption=
TST优化后的结构模型及吸声系数, figureFileSmall=T3l1MOAhDKPbqODT3zM8EQ==, figureFileBig=X1k2r2WATMdKGSggh+9bfA==, tableContent=null), ArticleFig(id=1281324085300933413, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=EN, label=Tab.1, caption=
Structural parameters of the model
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| Rr/mm | Rd/mm | Hd/mm | Hr/mm | Hs/mm |
|---|
| 38 | 40 | 40 | 38 | 30 |
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模型的结构参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| Rr/mm | Rd/mm | Hd/mm | Hr/mm | Hs/mm |
|---|
| 38 | 40 | 40 | 38 | 30 |
), ArticleFig(id=1281324085586146087, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=EN, label=Tab.2, caption=
Material parameters considered in this work[10]
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 密度/(kg·m−3) | 体积模量/Pa | 剪切模量/Pa | 声速/(m·s−1) |
|---|
| 橡胶 | 1300 | 1.67×109+i×8.33×108 | 1.00×107+i×5.01×106 | – |
| 钢 | 7850 | 1.55×1011 | 8.01×1010 | – |
| 水 | 1000 | – | – | 1448 |
| 空气 | 1.25 | – | – | 343 |
), ArticleFig(id=1281324085670032168, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281324057492697748, language=CN, label=表2, caption=
本文中的材料参数[10]
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 密度/(kg·m−3) | 体积模量/Pa | 剪切模量/Pa | 声速/(m·s−1) |
|---|
| 橡胶 | 1300 | 1.67×109+i×8.33×108 | 1.00×107+i×5.01×106 | – |
| 钢 | 7850 | 1.55×1011 | 8.01×1010 | – |
| 水 | 1000 | – | – | 1448 |
| 空气 | 1.25 | – | – | 343 |
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