Article(id=1281203644523582436, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1281203336514867310, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2026.04.013, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1762790400000, receivedDateStr=2025-11-11, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1783392352467, onlineDateStr=2026-07-07, pubDate=1776182400000, pubDateStr=2026-04-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1783392352467, onlineIssueDateStr=2026-07-07, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1783392352467, creator=13041195026, updateTime=1783392352467, updator=13041195026, issue=Issue{id=1281203336514867310, tenantId=1146029695717560320, journalId=1240685776644648972, year='2026', volume='30', issue='4', pageStart='507', pageEnd='658', issueExtLink='null', onlineDate='null', pubDate='1776182400000', pubDateStr='2026-04-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1783392279032, creator='13041195026', updateTime=1783395286077, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1281215949713945277, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1281203336514867310, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1281215949713945278, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1281203336514867310, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=648, endPage=658, ext={EN=ArticleExt(id=1281203646096446438, articleId=1281203644523582436, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=A modified radial point interpolation meshless model for acoustic analysis of underwater elastic objects, columnId=1241023038381158513, journalTitle=Journal of Ship Mechanics, columnName=Hydro/Structural Acoustics, runingTitle=null, highlight=null, articleAbstract=
The classical finite element method (FEM) is known to suffer from significant accuracy degradation under large wavenumber conditions due to dispersion error effects. Furthermore, the reliability of FEM solutions heavily depends on mesh quality, particularly in regions with steep gradient fields or complex geometric features. While high-quality meshes are essential for obtaining credible results, their generation remains computationally intensive and time-consuming. To address these limitations, this study proposes a modified radial point interpolation meshless method (MRPIM) for three-dimensional acoustic-structure interaction analysis. By introducing a novel interpolation node selection scheme, the method constructs continuous approximation functions within individual integration cells, effectively reducing numerical integration errors. Results demonstrate that the modified method achieves notable improvements in computational accuracy compared to the conventional method (RPIM) while exhibiting superior efficiency. Additionally, the computational overhead of MRPIM is comparable to that of FEM, highlighting its promising potential for engineering applications.
, authors=Xiang-yu YOU
1, 2, 3, Yu YAO
1, 3, Wei LI
4, authorsList=Xiang-yu YOU, Yu YAO, Wei LI, authorCompany=null, correspAuthors=Yu YAO, 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=1281203669718765664, articleId=1281203644523582436, tenantId=1146029695717560320, journalId=1240685776644648972, language=CN, title=水下弹性目标声学分析的改进径向点插值无网格计算模型, columnId=1241023038515376243, journalTitle=船舶力学, columnName=流体与结构声学, runingTitle=null, highlight=null, articleAbstract=
经典有限元法(FEM)在较高计算频率下会受频散误差效应的影响,出现显著的精度劣化。此外,有限元解的可信度高度依赖于网格质量,尤其在具有陡峭梯度场或复杂几何特征的区域,高质量网格是获得可靠结果的必要前提,但此类网格的生成过程往往具有计算密集性和耗时性。针对上述问题,本研究提出一种改进径向基点插值无网格计算方法(MRPIM)用于三维声固耦合分析。该方法通过引入新型插值节点选择方案,在单个积分单元内构造了连续声压近似函数,从而有效降低了数值积分误差。结果表明,改进方法在计算精度上较原有方法(RPIM)具有显著提升,且有更优的计算效率;数值分析进一步揭示,该方法与有限元法的计算成本具有可比性,显示出良好的工程应用潜力。
, authors=游翔宇
1, 2, 3, 姚宇
1, 3, 李威
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2.上海交通大学 海洋工程全国重点实验室,上海 200240
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Integration cells and different interpolation node selection schemes (using a 2D framework as an example), figureFileSmall=Y+LWG6GiSP0tZXV70HOxww==, figureFileBig=6oRkqEmdq9SofO5q2jt/jQ==, tableContent=null), ArticleFig(id=1281203682297483403, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图1, caption=
积分网格和不同的插值节点选择方案(以二维方案示例), figureFileSmall=Y+LWG6GiSP0tZXV70HOxww==, figureFileBig=6oRkqEmdq9SofO5q2jt/jQ==, tableContent=null), ArticleFig(id=1281203682721108108, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.2, caption=
The problem domain for exterior acoustics (using a 2D framework as an example), figureFileSmall=uIvotsJbOf1Iyb8PODLPTg==, figureFileBig=93MbIbZHRHX28VSNIdhr/Q==, tableContent=null), ArticleFig(id=1281203682817577101, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图2, caption=
外场问题的问题域(以二维为例), figureFileSmall=uIvotsJbOf1Iyb8PODLPTg==, figureFileBig=93MbIbZHRHX28VSNIdhr/Q==, tableContent=null), ArticleFig(id=1281203683069235342, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.3, caption=
The geometry of the tube, figureFileSmall=Hb5KmeJpLpX3vzdXfNY0GQ==, figureFileBig=1yxIpFi/28bPOK42Y3PdSg==, tableContent=null), ArticleFig(id=1281203683211841679, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图3, caption=
驻波管的几何尺寸, figureFileSmall=Hb5KmeJpLpX3vzdXfNY0GQ==, figureFileBig=1yxIpFi/28bPOK42Y3PdSg==, tableContent=null), ArticleFig(id=1281203683878736016, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.4, caption=
Node distribution used in the numerical examples, figureFileSmall=fHHzHVf5H8Y7kqtbyKp/0w==, figureFileBig=e3DYjgMRzUR7INqb0fwpag==, tableContent=null), ArticleFig(id=1281203685598400658, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图4, caption=
本节算例所使用的节点分布, figureFileSmall=fHHzHVf5H8Y7kqtbyKp/0w==, figureFileBig=e3DYjgMRzUR7INqb0fwpag==, tableContent=null), ArticleFig(id=1281203685678092435, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.5, caption=
Relative errors in the numerical solutions calculated by a set of values of αc when f=5000 Hz, figureFileSmall=L4gDBbkaxNn2kigHXVgtDg==, figureFileBig=s0N44yFKsyR0uw8S4AKQsg==, tableContent=null), ArticleFig(id=1281203685904584852, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图5, caption=
f=5000 Hz时固定αc值时获取到的数值解中相对误差, figureFileSmall=L4gDBbkaxNn2kigHXVgtDg==, figureFileBig=s0N44yFKsyR0uw8S4AKQsg==, tableContent=null), ArticleFig(id=1281203686047191189, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.6, caption=
Relative errors in the numerical solutions calculated by a set of values of q when f=5000 Hz, figureFileSmall=iz0xk4vaNJTzi+Ha5oL//A==, figureFileBig=2gMpa+o8doVBevgfhoJ4rg==, tableContent=null), ArticleFig(id=1281203686126882966, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图6, caption=
f=5000 Hz时固定q值时获取到的数值解中相对误差, figureFileSmall=iz0xk4vaNJTzi+Ha5oL//A==, figureFileBig=2gMpa+o8doVBevgfhoJ4rg==, tableContent=null), ArticleFig(id=1281203686466621591, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.7, caption=
Relative errors in the eigenfrequencies obtained by different numerical methods compared with the analytical solution, figureFileSmall=VShC0IyEkFse5yFQXl/JQw==, figureFileBig=B5U7jUNAqjP3Rxz9y4506A==, tableContent=null), ArticleFig(id=1281203686756028568, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图7, caption=
不同数值方法获取到的模态频率相对误差, figureFileSmall=VShC0IyEkFse5yFQXl/JQw==, figureFileBig=B5U7jUNAqjP3Rxz9y4506A==, tableContent=null), ArticleFig(id=1281203686856691865, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.8, caption=
Relative errors in the solutions obtained by various numerical methods in the frequency range of 1~14 800 Hz, figureFileSmall=RKzKm9vioWCd6aTOT72JSg==, figureFileBig=yO5dAyilmifbBAJ6OP1NSg==, tableContent=null), ArticleFig(id=1281203687141904538, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图8, caption=
1~14 800 Hz内不同数值方法获取到的数值解相对误差, figureFileSmall=RKzKm9vioWCd6aTOT72JSg==, figureFileBig=yO5dAyilmifbBAJ6OP1NSg==, tableContent=null), ArticleFig(id=1281203687322259611, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.9, caption=
Convergence properties of various numerical methods at 10000 Hz, figureFileSmall=91pJr5po0KB+HMbo86qUTA==, figureFileBig=pgz7+V0fBiOy55pNAqlNdA==, tableContent=null), ArticleFig(id=1281203687615860892, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图9, caption=
10000 Hz时不同数值方法的收敛性对比, figureFileSmall=91pJr5po0KB+HMbo86qUTA==, figureFileBig=pgz7+V0fBiOy55pNAqlNdA==, tableContent=null), ArticleFig(id=1281203687938822301, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.10, caption=
Computational efficiency of various numerical methods at 10000 Hz, figureFileSmall=NliNMdNlMFfxbyvv32+png==, figureFileBig=bBgjh+KIrFQqnLO8rqfKqw==, tableContent=null), ArticleFig(id=1281203688370835614, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图10, caption=
10000 Hz时不同数值方法的计算效率对比, figureFileSmall=NliNMdNlMFfxbyvv32+png==, figureFileBig=bBgjh+KIrFQqnLO8rqfKqw==, tableContent=null), ArticleFig(id=1281203690090500255, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.11, caption=
Geometry of the truncated problem domain, figureFileSmall=fO80+hHEQLSrr1IzLjYphA==, figureFileBig=f0UvuipfU21TgvisdXHJ/Q==, tableContent=null), ArticleFig(id=1281203690237300896, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图11, caption=
有限域的几何尺寸, figureFileSmall=fO80+hHEQLSrr1IzLjYphA==, figureFileBig=f0UvuipfU21TgvisdXHJ/Q==, tableContent=null), ArticleFig(id=1281203690316992673, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.12, caption=
Node distribution used in the numerical example, figureFileSmall=AfODEaToPIlpZeELWoEe5Q==, figureFileBig=z3dtw7EO3chTA87QA2aqzg==, tableContent=null), ArticleFig(id=1281203690484764834, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图12, caption=
本节算例所使用的节点分布, figureFileSmall=AfODEaToPIlpZeELWoEe5Q==, figureFileBig=z3dtw7EO3chTA87QA2aqzg==, tableContent=null), ArticleFig(id=1281203690585428131, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.13, caption=
Scattering sound pressure directivity at 500 Hz, figureFileSmall=Pu26uLuJrHVbgUul5QcP6g==, figureFileBig=GfamY8o0TqILzHqP65ElGw==, tableContent=null), ArticleFig(id=1281203690694480036, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图13, caption=
500 Hz散射声压指向性, figureFileSmall=Pu26uLuJrHVbgUul5QcP6g==, figureFileBig=GfamY8o0TqILzHqP65ElGw==, tableContent=null), ArticleFig(id=1281203691118104741, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.14, caption=
Scattering sound pressure directivity at 1000 Hz, figureFileSmall=gWDhN9lxSLFk/M/BPFjiSA==, figureFileBig=X6jwc61l7vExkp3bU8uy5g==, tableContent=null), ArticleFig(id=1281203691545923750, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图14, caption=
1000 Hz散射声压指向性, figureFileSmall=gWDhN9lxSLFk/M/BPFjiSA==, figureFileBig=X6jwc61l7vExkp3bU8uy5g==, tableContent=null), ArticleFig(id=1281203691831136423, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.15, caption=
Scattering sound pressure directivity at 1500 Hz, figureFileSmall=AxnRVY3QS+tt94HTeqPDTw==, figureFileBig=XmXjLsSnbENM2UZNUDVnSQ==, tableContent=null), ArticleFig(id=1281203691982131368, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图15, caption=
1500 Hz散射声压指向性, figureFileSmall=AxnRVY3QS+tt94HTeqPDTw==, figureFileBig=XmXjLsSnbENM2UZNUDVnSQ==, tableContent=null), ArticleFig(id=1281203692267344041, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Fig.16, caption=
Scattering sound pressure directivity at 2250 Hz, figureFileSmall=peipE153thKcsFboTdXy7g==, figureFileBig=ySicJ1TNRXYOY4Vwulrqyg==, tableContent=null), ArticleFig(id=1281203692359618730, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=图16, caption=
2250 Hz散射声压指向性, figureFileSmall=peipE153thKcsFboTdXy7g==, figureFileBig=ySicJ1TNRXYOY4Vwulrqyg==, tableContent=null), ArticleFig(id=1281203692619665579, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Tab.1, caption=
Relative errors in the solutions of different numerical methods for several frequencies
, figureFileSmall=null, figureFileBig=null, tableContent=
| 频率(Hz) | 500 | 1000 | 1500 | 2000 | 2250 |
|---|
| FEM-T4 | 2.95% | 10.36% | 16.40% | 31.98% | 49.15% |
| MRPIM | 2.58% | 0.65% | 3.14% | 8.90% | 11.32% |
), ArticleFig(id=1281203692787437740, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=表1, caption=
不同数值方法在各频率点处的声压相对误差
, figureFileSmall=null, figureFileBig=null, tableContent=
| 频率(Hz) | 500 | 1000 | 1500 | 2000 | 2250 |
|---|
| FEM-T4 | 2.95% | 10.36% | 16.40% | 31.98% | 49.15% |
| MRPIM | 2.58% | 0.65% | 3.14% | 8.90% | 11.32% |
), ArticleFig(id=1281203694448382125, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=EN, label=Tab.2, caption=
Relative errors in the solutions of different numerical methods for the different sets of nodes per wavelength
, figureFileSmall=null, figureFileBig=null, tableContent=
| 每波长节点数 | 12 | 10 | 8 | 6 |
|---|
| FEM-T4 | 7.27% | 16.53% | 33.62% | 49.15% |
| MRPIM | 1.47% | 3.11% | 6.02% | 11.32% |
), ArticleFig(id=1281203694750372014, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1281203644523582436, language=CN, label=表2, caption=
不同的每波长节点数下不同数值方法的相对误差
, figureFileSmall=null, figureFileBig=null, tableContent=
| 每波长节点数 | 12 | 10 | 8 | 6 |
|---|
| FEM-T4 | 7.27% | 16.53% | 33.62% | 49.15% |
| MRPIM | 1.47% | 3.11% | 6.02% | 11.32% |
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