Article(id=1243306173764584404, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306166663622912, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2025.04.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1729267200000, receivedDateStr=2024-10-19, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774356891336, onlineDateStr=2026-03-24, pubDate=1745078400000, pubDateStr=2025-04-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774356891336, onlineIssueDateStr=2026-03-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774356891336, creator=13701087609, updateTime=1774356891336, updator=13701087609, issue=Issue{id=1243306166663622912, tenantId=1146029695717560320, journalId=1240685776644648972, year='2025', volume='29', issue='4', pageStart='517', pageEnd='679', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1774356889644, creator=13701087609, updateTime=1774357043129, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1243306810493485479, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306166663622912, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1243306810493485480, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306166663622912, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=610, endPage=618, ext={EN=ArticleExt(id=1243306174020436954, articleId=1243306173764584404, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Topology optimization of NURBS-based isogeometric parameterized level set for complex ship structures, columnId=1242129251223274417, journalTitle=Journal of Ship Mechanics, columnName=Structural Mechanics, runingTitle=null, highlight=null, articleAbstract=
In this paper, a NURBS-based geometric parametric level set topology optimization method is proposed to address the challenges faced by the traditional topology optimization method in seamlessly integrating CAD and CAE and dealing with the fragmentation between geometric modeling, structural analysis, and optimization design for complex ship structures. Firstly, the ship structure is immersed in a three-variable NURBS 3D solid structure. Then, a ray-tracing-algorithm is employed to quickly determine the relevant geometric information of the design domain, boundary, and load application area, such as units and control points, in order to establish the NURBS-based geometric parametric level set topology optimization method. By this method, the limitations of traditional NURBS-based topology optimization, which is restricted by regular NURBS topology, are overcome. The method can handle any complex CAD model. It is demonstrated through numerical examples that the computational efficiency of the algorithm can be improved by more than 30% compared to the traditional geometric SIMP method.
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针对复杂船舶结构“几何建模-结构分析-优化设计”相互割裂,交互繁琐低效,以及传统拓扑优化方法难于实现CAD和CAE无缝融合等问题,本文提出基于非均匀有理B样条(NURBS)的等几何参数化水平集结构拓扑优化方法,并用于二维和三维拓扑优化。对于三维复杂结构,将船舶结构数模浸入到三变量NURBS三维实体结构中,然后通过光线追踪算法来快速确定设计域、边界和载荷施加区域的相关单元、控制点等几何信息,进而建立基于NURBS和浸入方法的等几何参数化水平集拓扑优化方法。该方法克服了传统的等几何拓扑优化受限于规则NURBS拓扑的限制,可处理复杂CAD模型。数值算例表明相较于传统的等几何SIMP方法,该算法计算效率可提升30%以上。
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3.武汉大学 土木建筑工程学院,武汉 430072, bio={"content":"
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4.Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116024, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1243306187307991413, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, authorId=1243306187098276197, language=CN, stringName=张世林, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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Chinese Journal of Computational Mechanics,
2018,
35(2): 8., articleTitle=Stress-constrained topology optimization of continuum structures based on IGA-SIMP method, refAbstract=null)], funds=[Fund(id=1243306198234153612, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, awardId=2024YFE0104300; 2021YFB3300601; 2021YFC2802300, language=CN, fundingSource=国家重点研发计划项目(2024YFE0104300; 2021YFB3300601; 2021YFC2802300), fundOrder=null, country=null), Fund(id=1243306198339011214, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, awardId=12322204, language=CN, fundingSource=船舶总体性能创新研究开放基金(12322204), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1243306185517023492, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, xref=1., ext=[AuthorCompanyExt(id=1243306185525412101, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, companyId=1243306185517023492, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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5.工业装备结构分析优化与CAE软件全国重点实验室,辽宁 大连 116024)])], figs=[ArticleFig(id=1243306191175139826, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.1, caption=
Two-dimensional design domain and level set model, figureFileSmall=74F7ins0pRElcTS7+34jeA==, figureFileBig=TBf3gNC+/DInrYN7KFUAAA==, tableContent=null), ArticleFig(id=1243306191246442997, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图1, caption=
二维设计域及水平集模型, figureFileSmall=74F7ins0pRElcTS7+34jeA==, figureFileBig=TBf3gNC+/DInrYN7KFUAAA==, tableContent=null), ArticleFig(id=1243306191451963903, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.2, caption=
Spatial discretization of the quarter-ring model for isogeometric and finite element units respectively, figureFileSmall=3MDrm9aV0b78RPP/FhgxGw==, figureFileBig=etBI7TMf80148Ytakp5aWQ==, tableContent=null), ArticleFig(id=1243306191540044290, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图2, caption=
四分之一圆环模型的等几何分析和有限元空间离散, figureFileSmall=3MDrm9aV0b78RPP/FhgxGw==, figureFileBig=etBI7TMf80148Ytakp5aWQ==, tableContent=null), ArticleFig(id=1243306191644901896, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.3, caption=
Flow chart of topology optimization analysis of isogeometric level set method, figureFileSmall=l9t4gyHQL5fUK5g4mjpYsA==, figureFileBig=EfCGMstSBz0dRKfm5Mx6Pw==, tableContent=null), ArticleFig(id=1243306191753953802, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图3, caption=
等几何水平集拓扑优化分析流程, figureFileSmall=l9t4gyHQL5fUK5g4mjpYsA==, figureFileBig=EfCGMstSBz0dRKfm5Mx6Pw==, tableContent=null), ArticleFig(id=1243306191846228493, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.4, caption=
Topology optimization of 2D isogeometric NURBS parameterized level set for Example 1, figureFileSmall=gcxnfYR/6qLY/R7fywmrDA==, figureFileBig=CYhQ7fHJ/siMID4DpODCvQ==, tableContent=null), ArticleFig(id=1243306191934308883, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图4, caption=
二维等几何NURBS参数化水平集拓扑优化(算例1), figureFileSmall=gcxnfYR/6qLY/R7fywmrDA==, figureFileBig=CYhQ7fHJ/siMID4DpODCvQ==, tableContent=null), ArticleFig(id=1243306192009806358, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.5, caption=
Initial 2D topology for Example 1, figureFileSmall=3G7zGcDCOgVvTiJzo7fPzw==, figureFileBig=DzAH+ii8MjYqicxJOHFE+w==, tableContent=null), ArticleFig(id=1243306192131441178, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图5, caption=
初始平面拓扑结构(算例1), figureFileSmall=3G7zGcDCOgVvTiJzo7fPzw==, figureFileBig=DzAH+ii8MjYqicxJOHFE+w==, tableContent=null), ArticleFig(id=1243306193653973537, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.6, caption=
Level-set function corresponding to the initial topology, figureFileSmall=o3Gr2uWcD+XvKPsSmpq+rA==, figureFileBig=vqvlVWekMHSGrVjjHXEK5w==, tableContent=null), ArticleFig(id=1243306193775608356, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图6, caption=
初始拓扑结构对应的水平集函数(算例1), figureFileSmall=o3Gr2uWcD+XvKPsSmpq+rA==, figureFileBig=vqvlVWekMHSGrVjjHXEK5w==, tableContent=null), ArticleFig(id=1243306193872077349, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.7, caption=
Plane topology after optimization for Example 1, figureFileSmall=Zd5tECgeKw0kXp3ZDDTmTA==, figureFileBig=CFtryHL4CotqkdRD4T0Ujw==, tableContent=null), ArticleFig(id=1243306193964352041, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图7, caption=
优化后平面拓扑结构(算例1), figureFileSmall=Zd5tECgeKw0kXp3ZDDTmTA==, figureFileBig=CFtryHL4CotqkdRD4T0Ujw==, tableContent=null), ArticleFig(id=1243306194065015338, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.8, caption=
Topology optimization of 2D isogeometric NURBS parameterized level-sets for Example 2, figureFileSmall=QlfFdbNL/u9myR605e+Hew==, figureFileBig=rLkAEOG3pFCBPNWhIEVnzQ==, tableContent=null), ArticleFig(id=1243306194190844464, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图8, caption=
二维等几何NURBS参数化水平集拓扑优化(算例2), figureFileSmall=QlfFdbNL/u9myR605e+Hew==, figureFileBig=rLkAEOG3pFCBPNWhIEVnzQ==, tableContent=null), ArticleFig(id=1243306194262147632, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.9, caption=
Initial topology for Example 2, figureFileSmall=dw8udKvsNjfYsG43QNg5+g==, figureFileBig=FHnp8UdPBIVDYK6B77YdUA==, tableContent=null), ArticleFig(id=1243306194354422325, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图9, caption=
初始平面拓扑结构(算例2), figureFileSmall=dw8udKvsNjfYsG43QNg5+g==, figureFileBig=FHnp8UdPBIVDYK6B77YdUA==, tableContent=null), ArticleFig(id=1243306194459279931, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.10, caption=
Level-set function corresponding to the initial topology for Example 2, figureFileSmall=HQyqrnKmUHBxycF08lFieQ==, figureFileBig=Pj1Jz8ey9mhHpvenP1/VUw==, tableContent=null), ArticleFig(id=1243306194568331837, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图10, caption=
初始拓扑结构对应的水平集函数(算例2), figureFileSmall=HQyqrnKmUHBxycF08lFieQ==, figureFileBig=Pj1Jz8ey9mhHpvenP1/VUw==, tableContent=null), ArticleFig(id=1243306194668995137, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.11, caption=
Optimal topology after optimization for Example 2, figureFileSmall=6/4oha3BO5cR+OMgJlYxSw==, figureFileBig=u7i7RJo5lnlyMsaKObHBZA==, tableContent=null), ArticleFig(id=1243306194769658439, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图11, caption=
优化后的最优拓扑结构(算例2), figureFileSmall=6/4oha3BO5cR+OMgJlYxSw==, figureFileBig=u7i7RJo5lnlyMsaKObHBZA==, tableContent=null), ArticleFig(id=1243306194853544520, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.12, caption=
3D level-set function corresponding to the optimized topology for Example 2, figureFileSmall=VkuaX2HVDnwzB54RMv0yCA==, figureFileBig=QWw2YBjQRxxDfOFujXP8uw==, tableContent=null), ArticleFig(id=1243306194950013516, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图12, caption=
优化后拓扑结构对应的三维水平集函数(算例2), figureFileSmall=VkuaX2HVDnwzB54RMv0yCA==, figureFileBig=QWw2YBjQRxxDfOFujXP8uw==, tableContent=null), ArticleFig(id=1243306195063259726, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.13, caption=
Topology optimization of 3D isogeometric NURBS parameterized level-sets for Example 3, figureFileSmall=Lg5FefA/0pQqS9oNucc+Qw==, figureFileBig=UozVqQFIXrwui9Vo56L6IA==, tableContent=null), ArticleFig(id=1243306195172311637, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图13, caption=
三维等几何NURBS参数化水平集拓扑优化(算例3), figureFileSmall=Lg5FefA/0pQqS9oNucc+Qw==, figureFileBig=UozVqQFIXrwui9Vo56L6IA==, tableContent=null), ArticleFig(id=1243306195289752154, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.14, caption=
Topology optimization results of 3D isogeometric NURBS level set, figureFileSmall=dS8/aNXCjQH7UzrZWEHMAQ==, figureFileBig=4pFO464AlIUKLynmZpFK7w==, tableContent=null), ArticleFig(id=1243306195382026845, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图14, caption=
三维等几何NURBS水平集拓扑优化结果(算例3), figureFileSmall=dS8/aNXCjQH7UzrZWEHMAQ==, figureFileBig=4pFO464AlIUKLynmZpFK7w==, tableContent=null), ArticleFig(id=1243306195474301536, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.15, caption=
Schematic diagram of connection bridge in trimaran cabin structure, figureFileSmall=97sd97mxEA/8/0TJZK7+tQ==, figureFileBig=9SKCUcIYGKeMXckz4dgl0A==, tableContent=null), ArticleFig(id=1243306195566576228, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图15, caption=
三体船舱段结构连接桥示意图, figureFileSmall=97sd97mxEA/8/0TJZK7+tQ==, figureFileBig=9SKCUcIYGKeMXckz4dgl0A==, tableContent=null), ArticleFig(id=1243306195654656614, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.16, caption=
Background NURBS spline grid for parameterization and calculation, figureFileSmall=C8mleM9WK3o0IAPymCGRLw==, figureFileBig=dXzW/pjFxRk0gLZOoXw0kA==, tableContent=null), ArticleFig(id=1243306195709182569, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图16, caption=
用于参数化和计算的背景NURBS样条网格, figureFileSmall=C8mleM9WK3o0IAPymCGRLw==, figureFileBig=dXzW/pjFxRk0gLZOoXw0kA==, tableContent=null), ArticleFig(id=1243306195814040173, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.17, caption=
Control points for half connection bridge (The blue area denotes the active control points of the bridge design domain, and the red part represents control points in lower non-design domain), figureFileSmall=CrCAJIthuXeZXdUam8SCkg==, figureFileBig=roZJz+WfAoTGhTtXnf5mIQ==, tableContent=null), ArticleFig(id=1243306195902120562, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图17, caption=
二分之一连接桥控制点(蓝色控制点是连接桥设计域激活控制点,红色部分是下方非设计域控制点), figureFileSmall=CrCAJIthuXeZXdUam8SCkg==, figureFileBig=roZJz+WfAoTGhTtXnf5mIQ==, tableContent=null), ArticleFig(id=1243306195994395253, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.18, caption=
Topology of half bridge after optimization, figureFileSmall=32Ih0qlUy9h3+7Sl2HiSVQ==, figureFileBig=hxGFsvyjS/gYjDQmCcwngw==, tableContent=null), ArticleFig(id=1243306196074087034, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图18, caption=
二分之一连接桥优化后的拓扑结果, figureFileSmall=32Ih0qlUy9h3+7Sl2HiSVQ==, figureFileBig=hxGFsvyjS/gYjDQmCcwngw==, tableContent=null), ArticleFig(id=1243306196170556030, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Fig.19, caption=
Overall CAD model with four bridges after reconstruction, figureFileSmall=oTV2iAC0QWfvlopSVRTCpg==, figureFileBig=4D+5MFRdSG/2l8CCJ2GcUw==, tableContent=null), ArticleFig(id=1243306196258636416, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=图19, caption=
重构后含四个连接桥的整体CAD模型, figureFileSmall=oTV2iAC0QWfvlopSVRTCpg==, figureFileBig=4D+5MFRdSG/2l8CCJ2GcUw==, tableContent=null), ArticleFig(id=1243306196350911106, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Tab.1, caption=
Comparison of topology optimization efficiencies between isogeometric level-set and finite element level-set with the same degree of freedom
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | 自由度 | 耗时/s | 柔顺度 | 迭代步数 |
|---|
| 等几何(IGA) | 12 158 | 31 | 91 | 112 |
| 有限元(FEA) | 13 761 | 52 | 91 | 198 |
), ArticleFig(id=1243306196455768709, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=表1, caption=
同等自由度下等几何水平集拓扑优化和有限元水平集拓扑优化效率对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | 自由度 | 耗时/s | 柔顺度 | 迭代步数 |
|---|
| 等几何(IGA) | 12 158 | 31 | 91 | 112 |
| 有限元(FEA) | 13 761 | 52 | 91 | 198 |
), ArticleFig(id=1243306196560626313, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=EN, label=Tab.2, caption=
Material properties of the ship
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料型号 | 弹性模量/MPa | 泊松比 | σm/MPa | σp0.2/MPa | σsw/MPa |
|---|
| 5083-H116 | 7000 | 0.3 | 305 | 215 | 125 |
), ArticleFig(id=1243306196652901001, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306173764584404, language=CN, label=表2, caption=
船体材料属性
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料型号 | 弹性模量/MPa | 泊松比 | σm/MPa | σp0.2/MPa | σsw/MPa |
|---|
| 5083-H116 | 7000 | 0.3 | 305 | 215 | 125 |
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