Article(id=1281326962346017405, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1281326807345500788, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2025.12.013, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1757347200000, receivedDateStr=2025-09-09, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1783421753727, onlineDateStr=2026-07-07, pubDate=1765728000000, pubDateStr=2025-12-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1783421753727, onlineIssueDateStr=2026-07-07, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1783421753727, creator=13701087609, updateTime=1783421753727, updator=13701087609, issue=Issue{id=1281326807345500788, tenantId=1146029695717560320, journalId=1240685776644648972, year='2025', volume='29', issue='12', pageStart='1827', pageEnd='1990', issueExtLink='null', onlineDate='null', pubDate='1765728000000', pubDateStr='2025-12-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1783421716772, creator='13701087609', updateTime=1783422145004, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1281328603572977733, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1281326807345500788, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1281328603572977734, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1281326807345500788, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1965, endPage=1977, ext={EN=ArticleExt(id=1281326964170539646, articleId=1281326962346017405, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Underwater acoustic insulation mechanisms of sandwich panels in different frequency bands, columnId=1241023038381158513, journalTitle=Journal of Ship Mechanics, columnName=Hydro/Structural Acoustics, runingTitle=null, highlight=null, articleAbstract=
Due to the significant differences in material properties between the sandwich panel skins and core, sandwich panels exhibit different vibration characteristics in different frequency bands. This leads to different sound insulation mechanisms and calculation methods in different frequency bands. In this paper, theoretical methods applicable to low-frequency, high-frequency, and full-frequency ranges respectively were adopted to investigate the sound insulation performance and mechanisms of sandwich panels in different frequency bands. The results indicate that the sound insulation of sandwich panels in the low-frequency band is mainly determined by bending vibration mode, while the sound insulation in the high-frequency band is more affected by normal longitudinal waves. In the transition frequency band between the low-frequency and high-frequency bands, the sound insulation is affected by both bending waves and longitudinal waves. The phenomenon of the sound insulation trough caused by bending modes of sandwich skins when the core material behaves as an elastic foundation was analyzed in this paper. The influence of material damping on sound insulation in different frequency bands was studied, and the mechanism of damping weakening the sound insulation trough was analyzed. Finally, the effect of core material parameters and panel areal density on their sound insulation performance were presented.
, authors=Tong-tong ZHANG, Wei-bo WANG, Qian ZHANG, Zhi-xiong YANG, Xian ZHANG, Wen-wei WU, authorsList=Tong-tong ZHANG, Wei-bo WANG, Qian ZHANG, Zhi-xiong YANG, Xian ZHANG, Wen-wei WU, authorCompany=null, correspAuthors=Wen-wei WU, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2025 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=1281326988703023952, articleId=1281326962346017405, tenantId=1146029695717560320, journalId=1240685776644648972, language=CN, title=夹芯板在不同频段的水声隔声机制研究, columnId=1241023038515376243, journalTitle=船舶力学, columnName=流体与结构声学, runingTitle=null, highlight=null, articleAbstract=
由于夹芯板表皮面板和芯材的材料性能差异较大,因此在不同频段会分别表现出不同的振动特性,这导致夹芯板不同频段的隔声机制和隔声量计算方法也各不相同。本文先后采用适用于低、高频及全频段的夹芯板隔声理论计算方法,对夹芯板在不同频段的隔声性能和隔声机制进行研究。结果表明:夹芯板在低频段的隔声量主要由弯曲振动模式决定,在高频段的隔声量受法向纵波影响更大,而在中频过渡段,隔声量同时受到弯曲波和纵波作用的影响。随后进一步分析了芯材在高频段作为弹性基础时夹芯板面板模态造成隔声低谷的现象,研究了材料阻尼在不同频段对隔声量的影响,以及阻尼对隔声低谷现象削弱作用的机理。最后给出夹芯板芯材参数和板质量对其隔声性能的影响规律。
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Journal of Dynamic Systems Measurement and Control, 2005, 108(4)., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1281326988933710673, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, xref=null, ext=[AuthorCompanyExt(id=1281326988942099282, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, companyId=1281326988933710673, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=China Ship Scientific Research Center, Wuxi 214082, China), AuthorCompanyExt(id=1281326988950487891, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, companyId=1281326988933710673, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=中国船舶科学研究中心,江苏 无锡 214082)])], figs=[ArticleFig(id=1281326992394011512, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.1, caption=
Sound insulation model of sandwich panel in low frequency band, figureFileSmall=zZ4acgMmH6qmNjW7ixPnLQ==, figureFileBig=0REShp3uJtpjhBcA18dqaw==, tableContent=null), ArticleFig(id=1281326992490480505, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图1, caption=
夹芯板低频隔声模型, figureFileSmall=zZ4acgMmH6qmNjW7ixPnLQ==, figureFileBig=0REShp3uJtpjhBcA18dqaw==, tableContent=null), ArticleFig(id=1281326992691807098, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.2, caption=
Sound insulation model of sandwich panel in high frequency band, figureFileSmall=CHoc29fbLse8giu45FQnPQ==, figureFileBig=mrJQZSwVPbspTrLkuYOw4A==, tableContent=null), ArticleFig(id=1281326992758915963, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图2, caption=
夹芯板高频隔声模型, figureFileSmall=CHoc29fbLse8giu45FQnPQ==, figureFileBig=mrJQZSwVPbspTrLkuYOw4A==, tableContent=null), ArticleFig(id=1281326992830219132, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.3, caption=
Sound insulation of sandwich panel calculated by different theoretical methods, figureFileSmall=+PMaKWuvBXNNjSnTAbAcPQ==, figureFileBig=7F6dghyZKRCZsEm87X7iMQ==, tableContent=null), ArticleFig(id=1281326992905716605, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图3, caption=
不同理论方法计算的夹芯板隔声量, figureFileSmall=+PMaKWuvBXNNjSnTAbAcPQ==, figureFileBig=7F6dghyZKRCZsEm87X7iMQ==, tableContent=null), ArticleFig(id=1281326992968631166, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.4, caption=
Vibration velocities of the skins on the incident and transmission sides of sandwich panels (100 Hz), figureFileSmall=zr5avX3TSAS+ZP268sd2vw==, figureFileBig=eg/pfC/ebnsVUzWN9duS5Q==, tableContent=null), ArticleFig(id=1281326993031545727, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图4, caption=
夹芯板入射侧和透射侧表皮面板振速(100 Hz), figureFileSmall=zr5avX3TSAS+ZP268sd2vw==, figureFileBig=eg/pfC/ebnsVUzWN9duS5Q==, tableContent=null), ArticleFig(id=1281326993098654592, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.5, caption=
Vibration velocities of the skins on the incident and transmission sides of sandwich panels (1500 Hz), figureFileSmall=oywg854OFOpjr84l3kOhHg==, figureFileBig=SFxWSSVl1ObGzq1wTNXO+A==, tableContent=null), ArticleFig(id=1281326993174152065, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图5, caption=
夹芯板入射侧和透射侧表皮面板振速(1500 Hz), figureFileSmall=oywg854OFOpjr84l3kOhHg==, figureFileBig=SFxWSSVl1ObGzq1wTNXO+A==, tableContent=null), ArticleFig(id=1281326993237066626, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.6, caption=
Vibration velocities of the skins on the incident and transmission sides of sandwich panels (4000 Hz), figureFileSmall=CmYN7j0UyNGbHjYswdBTyQ==, figureFileBig=I2eqbqWjT2RWEY2wiRchfA==, tableContent=null), ArticleFig(id=1281326993308369795, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图6, caption=
夹芯板入射侧和透射侧表皮面板振速(4000 Hz), figureFileSmall=CmYN7j0UyNGbHjYswdBTyQ==, figureFileBig=I2eqbqWjT2RWEY2wiRchfA==, tableContent=null), ArticleFig(id=1281326993367090052, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.7, caption=
Vibration velocities of the skins on the incident and transmission sides of sandwich panels (4600 Hz), figureFileSmall=sOXC+Is6AuJbjeuIiVfVUQ==, figureFileBig=ly2yq5AMpjXKlrQ2EDMl5Q==, tableContent=null), ArticleFig(id=1281326993430004613, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图7, caption=
夹芯板入射侧和透射侧表皮面板振速(4600 Hz), figureFileSmall=sOXC+Is6AuJbjeuIiVfVUQ==, figureFileBig=ly2yq5AMpjXKlrQ2EDMl5Q==, tableContent=null), ArticleFig(id=1281326993497113478, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.8, caption=
The modulus of matrix ${L_{mn}}$
in high-frequency band, figureFileSmall=OhJdp720mVpDJcETnwRGTQ==, figureFileBig=k8Skq5GzEiEnYSrJ+2oOUg==, tableContent=null), ArticleFig(id=1281326993572610951, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图8, caption=
高频段处矩阵${L_{mn}}$
的模, figureFileSmall=OhJdp720mVpDJcETnwRGTQ==, figureFileBig=k8Skq5GzEiEnYSrJ+2oOUg==, tableContent=null), ArticleFig(id=1281326993639719816, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.9, caption=
Vibration velocities of the skins on the incident and transmission sides of sandwich panels (8900 Hz), figureFileSmall=t8Lq97sIqP3StK1vpWmV9w==, figureFileBig=NIFaknie2yF0OYG5OJT99A==, tableContent=null), ArticleFig(id=1281326993715217289, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图9, caption=
夹芯板入射侧和透射侧表皮面板振速(8900 Hz), figureFileSmall=t8Lq97sIqP3StK1vpWmV9w==, figureFileBig=NIFaknie2yF0OYG5OJT99A==, tableContent=null), ArticleFig(id=1281326993794909066, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.10, caption=
Normal vibration velocity distribution of center point along the thickness of sandwich panel (4000 Hz), figureFileSmall=H3DowN29fA6tulL0c2Woxg==, figureFileBig=qDq+FD2ex8Xdw2lu5WKAEw==, tableContent=null), ArticleFig(id=1281326993882989451, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图10, caption=
夹芯板中点法向振速沿板厚的分布(4000 Hz), figureFileSmall=H3DowN29fA6tulL0c2Woxg==, figureFileBig=qDq+FD2ex8Xdw2lu5WKAEw==, tableContent=null), ArticleFig(id=1281326995476824972, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.11, caption=
Normal vibration velocity distribution of center point along the thickness of sandwichpanel (8900 Hz), figureFileSmall=t0RR3yPERVsrQXHaidXQNg==, figureFileBig=0H2c//u6ezpgRFVX3D3plw==, tableContent=null), ArticleFig(id=1281326995539739533, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图11, caption=
夹芯板中点法向振速沿板厚的分布(8900 Hz), figureFileSmall=t0RR3yPERVsrQXHaidXQNg==, figureFileBig=0H2c//u6ezpgRFVX3D3plw==, tableContent=null), ArticleFig(id=1281326995602654094, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.12, caption=
Sound insulation of undamped and damped sandwich panels, figureFileSmall=8qUa4Z2spxDrXjEObFgbyw==, figureFileBig=l35xd5NC5qYn7apxYzkolQ==, tableContent=null), ArticleFig(id=1281326995673957263, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图12, caption=
无阻尼和有阻尼夹芯板的隔声量, figureFileSmall=8qUa4Z2spxDrXjEObFgbyw==, figureFileBig=l35xd5NC5qYn7apxYzkolQ==, tableContent=null), ArticleFig(id=1281326995745260432, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.13, caption=
Vibration velocities of the skins on the incident and transmission sides of sandwich panels (100 Hz, with damping), figureFileSmall=2zWw6ohC3EVxjLDuZLqEVw==, figureFileBig=AiEc8NYpjmKCP5zXYXsItg==, tableContent=null), ArticleFig(id=1281326995841729425, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图13, caption=
夹芯板入射侧和透射侧表皮面板振速(100 Hz,有阻尼), figureFileSmall=2zWw6ohC3EVxjLDuZLqEVw==, figureFileBig=AiEc8NYpjmKCP5zXYXsItg==, tableContent=null), ArticleFig(id=1281326995908838290, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.14, caption=
Vibration velocities of the skins on the incident and transmission sides of sandwich panels (4600 Hz, with damping), figureFileSmall=hrt9ftaQ0g6BMXYVEQ6v3Q==, figureFileBig=02keBOL5G8NbcgAuvGm9mA==, tableContent=null), ArticleFig(id=1281326995984335763, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图14, caption=
夹芯板入射侧和透射侧表皮面板振速(4600 Hz,有阻尼), figureFileSmall=hrt9ftaQ0g6BMXYVEQ6v3Q==, figureFileBig=02keBOL5G8NbcgAuvGm9mA==, tableContent=null), ArticleFig(id=1281326996055638932, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.15, caption=
Sound insulation of sandwich panels with different core material moduli in low and transition frequency bands, figureFileSmall=VR6xOQYXhc6RVngh5sX74Q==, figureFileBig=JI7Ig5TcaKQ7jb7/8KD8yQ==, tableContent=null), ArticleFig(id=1281326996135330709, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图15, caption=
不同芯材模量夹芯板低频及过渡频段隔声量, figureFileSmall=VR6xOQYXhc6RVngh5sX74Q==, figureFileBig=JI7Ig5TcaKQ7jb7/8KD8yQ==, tableContent=null), ArticleFig(id=1281326996210828182, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.16, caption=
Sound insulation of sandwich panels with different core thicknesses in low and transition frequency bands, figureFileSmall=tSd8s6ASpnVXCPi5aErQBw==, figureFileBig=ForDDuad/IVJoJvsqSGn3A==, tableContent=null), ArticleFig(id=1281326996282131351, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图16, caption=
不同芯材厚度夹芯板低频及过渡频段隔声量, figureFileSmall=tSd8s6ASpnVXCPi5aErQBw==, figureFileBig=ForDDuad/IVJoJvsqSGn3A==, tableContent=null), ArticleFig(id=1281326996386988952, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.17, caption=
Sound insulation of sandwich panels with different core material moduli in high-frequency band, figureFileSmall=co1024EyPJrnusjJedEQMg==, figureFileBig=RQfRC0pmuMSdw0YKESLAKg==, tableContent=null), ArticleFig(id=1281326996466680729, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图17, caption=
不同芯材模量的夹芯板高频隔声量, figureFileSmall=co1024EyPJrnusjJedEQMg==, figureFileBig=RQfRC0pmuMSdw0YKESLAKg==, tableContent=null), ArticleFig(id=1281326996529595290, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.18, caption=
Sound insulation of sandwich panels with different core thicknesses in high-frequency band, figureFileSmall=/4tmWVtCV4j1BWcE3jFlrQ==, figureFileBig=RiGmt0EnyRQYZSjgnOIDXA==, tableContent=null), ArticleFig(id=1281326996592509851, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图18, caption=
不同芯材厚度的夹芯板高频隔声量, figureFileSmall=/4tmWVtCV4j1BWcE3jFlrQ==, figureFileBig=RiGmt0EnyRQYZSjgnOIDXA==, tableContent=null), ArticleFig(id=1281326996672201628, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.19, caption=
Sound insulation of sandwich panels with different mass in low and transition frequency bands, figureFileSmall=Zi0Lj/Cvho4VYMZCbD1eJw==, figureFileBig=kFV3HEzX+i+RYMmVRkwVFg==, tableContent=null), ArticleFig(id=1281326996777059229, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图19, caption=
不同质量夹芯板低频及过渡频段隔声量, figureFileSmall=Zi0Lj/Cvho4VYMZCbD1eJw==, figureFileBig=kFV3HEzX+i+RYMmVRkwVFg==, tableContent=null), ArticleFig(id=1281326996848362398, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Fig.20, caption=
Sound insulation of sandwich panels with different mass in high frequency band, figureFileSmall=5XCUsUcMvKJ0Tnfjm0fNdQ==, figureFileBig=OLH99l26QzY4gT34Mu/Tsw==, tableContent=null), ArticleFig(id=1281326996911276959, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=图20, caption=
不同质量夹芯板高频段隔声量, figureFileSmall=5XCUsUcMvKJ0Tnfjm0fNdQ==, figureFileBig=OLH99l26QzY4gT34Mu/Tsw==, tableContent=null), ArticleFig(id=1281326996974191520, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Tab.1, caption=
Material properties of sandwich panel
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 模量 /GPa | 泊松比 | 密度 /(kg·m−3) |
|---|
| 面板 | 玻璃钢 | 20 | 0.15 | 2000 |
| 芯材 | PVC泡沫 | 0.055 | 0.32 | 100 |
), ArticleFig(id=1281326997045494689, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=表1, caption=
夹芯板材料力学性能
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 模量 /GPa | 泊松比 | 密度 /(kg·m−3) |
|---|
| 面板 | 玻璃钢 | 20 | 0.15 | 2000 |
| 芯材 | PVC泡沫 | 0.055 | 0.32 | 100 |
), ArticleFig(id=1281326997112603554, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=EN, label=Tab.2, caption=
First ten natural frequencies of underwater bending vibration modes of sandwich panel
, figureFileSmall=null, figureFileBig=null, tableContent=
| 阶数 | 振型 | 三维弹性体夹芯的夹芯板 计算方法计算的固有频率/Hz | Mead理论计算的 固有频率/Hz | 有无隔声谷值 |
|---|
| 1 | (1,1) | 19.8 | 19.9 | 有 |
| 2 | (2,1) | 47.2 | 47.2 | 无 |
| 3 | (1,2) | 56.3 | 56.4 | 无 |
| 4 | (2,2) | 78.7 | 78.8 | 无 |
| 5 | (3,1) | 79.3 | 79.4 | 有 |
| 6 | (1,3) | 98.0 | 98.2 | 有 |
| 7 | (3,2) | 110.5 | 110.8 | 无 |
| 8 | (2,3) | 122.2 | 122.5 | 无 |
| 9 | (4,1) | 123.5 | 123.9 | 无 |
| 10 | (4,2) | 150.5 | 151.1 | 无 |
), ArticleFig(id=1281326997179712419, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281326962346017405, language=CN, label=表2, caption=
夹芯板前十阶水中弯曲振动固有频率
, figureFileSmall=null, figureFileBig=null, tableContent=
| 阶数 | 振型 | 三维弹性体夹芯的夹芯板 计算方法计算的固有频率/Hz | Mead理论计算的 固有频率/Hz | 有无隔声谷值 |
|---|
| 1 | (1,1) | 19.8 | 19.9 | 有 |
| 2 | (2,1) | 47.2 | 47.2 | 无 |
| 3 | (1,2) | 56.3 | 56.4 | 无 |
| 4 | (2,2) | 78.7 | 78.8 | 无 |
| 5 | (3,1) | 79.3 | 79.4 | 有 |
| 6 | (1,3) | 98.0 | 98.2 | 有 |
| 7 | (3,2) | 110.5 | 110.8 | 无 |
| 8 | (2,3) | 122.2 | 122.5 | 无 |
| 9 | (4,1) | 123.5 | 123.9 | 无 |
| 10 | (4,2) | 150.5 | 151.1 | 无 |
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