Article(id=1241838548391891021, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1241838547544641612, articleNumber=null, orderNo=null, doi=10.19636/j.cnki.cjsm42-1250/o3.2024.052, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1730563200000, receivedDateStr=2024-11-03, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774006982181, onlineDateStr=2026-03-20, pubDate=1745337600000, pubDateStr=2025-04-23, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774006982181, onlineIssueDateStr=2026-03-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774006982181, creator=13701087609, updateTime=1774006982181, updator=13701087609, issue=Issue{id=1241838547544641612, tenantId=1146029695717560320, journalId=1241755870837649424, year='2025', volume='46', issue='2', pageStart='149', pageEnd='296', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1774006981978, creator=13701087609, updateTime=1774007061443, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241838880882758461, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1241838547544641612, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241838880882758462, tenantId=1146029695717560320, journalId=1241755870837649424, issueId=1241838547544641612, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=162, endPage=176, ext={EN=ArticleExt(id=1241838548752601168, articleId=1241838548391891021, tenantId=1146029695717560320, journalId=1241755870837649424, language=EN, title=Bi-mapping Solving Approach for the ICM Method of Structural Topology Optimization, columnId=1241831201674171363, journalTitle=Chinese Journal of Solid Mechanics, columnName=Research Papers, runingTitle=null, highlight=null, articleAbstract=
A novel solving approach featuring bi-mapping, referred to as B-ICM, has been developed based on the ICM (independent, continuous, and mapping) method of structural topology optimization. B-ICM consists of two distinct steps: the first involves applying linear (L) mapping to the structural topology optimization problem, transforming it into a discrete model, and subsequently constructing the constraint function; the second entails implementing nonlinear (NL) mapping on this discrete model to create a continuous model, while converting continuous elemental topology variables into discrete ones. In contrast to the original ICM method, wherein the first step serves solely as a theoretical derivation, and the construction of constraint functions along with modeling and solving algorithms are all encompassed within the second step, which is categorized as a “one-step” approach, the B-ICM is classified as a “two-step” approach. Despite this distinction, it still employs the sequential dual quadratic programming algorithm commonly utilized in ICM methods for solving optimization models. We demonstrated this modeling and solving process using the structural topology optimization problem of volume minimization with displacement constraints. Results from both single-load and multi-load cases validated the effectiveness of our approach. We compared iteration count, clarity, and optimization capability across three methods for achieving distinct topologies: (1) the SIMP method considering Heaviside projection, (2) the floating projection topology optimization (FPTO) method, (3) the non-penalized method of smooth-edged material distribution for optimizing topology (SEMDOT), as well as the original ICM method. Results indicated that B-ICM outperforms these alternatives. This study not only enhances the modeling strategy and refines the solution approach of the ICM method, but also offers a superior technique for addressing blurry boundary problems. In continuum topology optimization, optimal topologies with blurry boundaries are typically generated through filtering operations designed to mitigate checkerboard patterns and mesh dependency issues. Notably, an increase in the filtering radius results in a more blurred boundary. Our study successfully addressed this challenge by achieving clear boundaries for optimal topologies. Importantly, the key techniques developed here are applicable to all continuous variable optimization methods, including the variable density method.
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本文基于结构拓扑优化的ICM(独立、连续和映射的简称)方法,发展出了双映射接力运作的求解途径,因“双”的英文简称为B,故称之为B-ICM求解途径. 该途径由两步组成:第一步是L(线性)映射作用于结构拓扑优化问题,使之成为离散模型,然后构造了约束函数;第二步是NL(非线性)映射作用于离散模型,使之成为连续模型,同时实现了单元拓扑变量由离散到连续的转换过程. 以往ICM方法的求解途径中,上述第一步只是起到理论推导的作用,构造约束函数同其它建模与求解等算法均包含在第二步里,因此属于“一步求解”途径. B-ICM虽然属于“两步求解”途径,但是优化模型寻优仍然沿用ICM方法惯用的序列对偶二次规划算法. 本文以位移约束的体积极小化结构拓扑优化问题为例,示例了上述建模及求解过程. 单载荷工况和多载荷工况的算例,均印证了本文的研究实现了预期构想,与目前旨在得到清晰拓扑的3种方法(1、考虑Heaviside投影的SIMP方法;2、浮动投影拓扑优化<简称为FPTO>方法;3、非惩罚的光滑边界材料分布拓扑优化<简称为SEMDOT>方法),以及ICM方法以往的求解途径,进行了迭代次数、清晰程度、寻优能力等方面的对比,结果表明B-ICM求解途径表现最好. 本文研究不仅丰富了ICM方法建模策略,推动了ICM方法求解途径的完善,也为解决模糊边界问题提供了一种优越的做法. 过往的连续体结构拓扑优化求解,因消除棋盘格和网格依赖性问题而采取的过滤操作导致最优拓扑构型产生模糊边界,而且过滤半径越大,则边界越模糊. 本文克服了这些令人堪忧的问题,可以成功地得到最优拓扑构型的清晰边界. 值得提及的是,本文研究的关键技术,可以移植到包括变密度方法等所有连续变量优化的方法中.
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55(10): 2417-2426., articleTitle=化可分离凸规划为对偶规划显式模型的普适解法研究比较, refAbstract=null), Reference(id=1241838588279721988, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, doi=null, pmid=null, pmcid=null, year=2023, volume=55, issue=10, pageStart=2417, pageEnd=2426, url=null, language=null, rfNumber=[37], rfOrder=45, authorNames=Peng X R, Sui Y K, journalName=Chinese Journal of Theoretical and Applied Mechanics, refType=null, unstructuredReference=(
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55(10): 2417-2426. (in Chinese)), articleTitle=Research on universal solution of transforming separable convex programing to dual programming with explict model, refAbstract=null)], funds=[Fund(id=1241838581073908619, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, awardId=2022JJ30113, language=CN, fundingSource=湖南省自然科学基金项目(2022JJ30113), fundOrder=null, country=null), Fund(id=1241838581170377614, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, awardId=21A0507, language=CN, fundingSource=湖南省教育厅重点项目(21A0507), fundOrder=null, country=null), Fund(id=1241838581266846608, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, awardId=GZ23104, language=CN, fundingSource=大连理工大学工业装备结构分析国家重点实验室开放基金项目(GZ23104), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1241838574748897993, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, xref=
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3天津财经大学理工学院,天津,300222)])], figs=[ArticleFig(id=1241838577185788747, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Fig.1, caption=
Filter function approximate Hurdle function, figureFileSmall=QBqXR7Gs07YKtM14JCdqzA==, figureFileBig=gG+gXpC5r/a2W5buoJbjig==, tableContent=null), ArticleFig(id=1241838577248703310, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=图1, caption=
过滤函数逼近跨栏函数, figureFileSmall=QBqXR7Gs07YKtM14JCdqzA==, figureFileBig=gG+gXpC5r/a2W5buoJbjig==, tableContent=null), ArticleFig(id=1241838577391309652, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Fig.2, caption=
Mechanic diagram for Example 1, figureFileSmall=R1dG0myiVVuHw8CCZ2UcCA==, figureFileBig=XCnmjt6G9VRAcrXF65j8wg==, tableContent=null), ArticleFig(id=1241838577475195736, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=图2, caption=
算例1力学简图, figureFileSmall=R1dG0myiVVuHw8CCZ2UcCA==, figureFileBig=XCnmjt6G9VRAcrXF65j8wg==, tableContent=null), ArticleFig(id=1241838577542304602, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Fig.3, caption=
Mechanic diagram for Example 2, figureFileSmall=iEu7qvs2wEPKE/lZT9DNBw==, figureFileBig=YiuUXhDVvZBZ9+ur48sd2w==, tableContent=null), ArticleFig(id=1241838579052254044, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=图3, caption=
算例2力学简图, figureFileSmall=iEu7qvs2wEPKE/lZT9DNBw==, figureFileBig=YiuUXhDVvZBZ9+ur48sd2w==, tableContent=null), ArticleFig(id=1241838579144528733, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Fig.4, caption=
Iterative curve and topologies for Example 2, figureFileSmall=v2OhqPNfiXUsGden/5CaNw==, figureFileBig=bmTMWtzFgM0u3PQrmpsJMg==, tableContent=null), ArticleFig(id=1241838579228414816, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=图4, caption=
算例2的迭代曲线及拓扑, figureFileSmall=v2OhqPNfiXUsGden/5CaNw==, figureFileBig=bmTMWtzFgM0u3PQrmpsJMg==, tableContent=null), ArticleFig(id=1241838579324883811, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Fig.5, caption=
Comparison of optimal topologies obtained by O-ICM and B-ICM with large filtering radius, figureFileSmall=fAAEw45qMRF4q+tjfdb9Wg==, figureFileBig=exFxlR8+BoUEaJq39Xb8pQ==, tableContent=null), ArticleFig(id=1241838579417158502, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=图5, caption=
大过滤半径下O-ICM和B-ICM最优拓扑比较, figureFileSmall=fAAEw45qMRF4q+tjfdb9Wg==, figureFileBig=exFxlR8+BoUEaJq39Xb8pQ==, tableContent=null), ArticleFig(id=1241838579526210410, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Fig.6, caption=
Mechanic diagram for Example 3, figureFileSmall=uJiRpPQRHFWjWi17yHwlKA==, figureFileBig=NF8/triXbD6e9nQc6B2URA==, tableContent=null), ArticleFig(id=1241838579639456622, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=图6, caption=
算例3力学简图, figureFileSmall=uJiRpPQRHFWjWi17yHwlKA==, figureFileBig=NF8/triXbD6e9nQc6B2URA==, tableContent=null), ArticleFig(id=1241838579731731314, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Fig.7, caption=
Optimal topology for Example 3, figureFileSmall=UbXgeULBOx5SklWIYzQthw==, figureFileBig=2KUU88Sz07iPaeMmu2wMpQ==, tableContent=null), ArticleFig(id=1241838579807228790, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=图7, caption=
算例3最优拓扑, figureFileSmall=UbXgeULBOx5SklWIYzQthw==, figureFileBig=2KUU88Sz07iPaeMmu2wMpQ==, tableContent=null), ArticleFig(id=1241838579874337656, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Fig.8, caption=
Iterative curves of volume ratio and discrete degree for Example 3, figureFileSmall=WsR+ld8UbmP3Ft7P+CmaZg==, figureFileBig=jq7+HY2R9hNj/nqjYFkjmg==, tableContent=null), ArticleFig(id=1241838580012749688, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=图8, caption=
算例3的体积比和离散度值迭代曲线, figureFileSmall=WsR+ld8UbmP3Ft7P+CmaZg==, figureFileBig=jq7+HY2R9hNj/nqjYFkjmg==, tableContent=null), ArticleFig(id=1241838580113412983, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Fig.9, caption=
Iterative curve of displacement constraint for Example 3, figureFileSmall=k7alIDByhQS67W5Jh77wwg==, figureFileBig=0mwE2D4WD3mtvxqjChZqfw==, tableContent=null), ArticleFig(id=1241838580188910459, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=图9, caption=
算例3的位移约束迭代曲线, figureFileSmall=k7alIDByhQS67W5Jh77wwg==, figureFileBig=0mwE2D4WD3mtvxqjChZqfw==, tableContent=null), ArticleFig(id=1241838580285379452, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Table 1, caption=
Result comparison of different methods for Example 1
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法名称 | 迭代次数 | 运行时间 | 柔顺度值 | 离散度值DR | 离散度值Mnd |
|---|
| SIMPH | 515 | 83.3 | 53.2 | 0.9385 | 0.0282 |
| FPTO | 169 | 49.8 | 50.1 | 0.5520 | 0.0861 |
| SEMDOT | 124 | 222.3 | 50.9 | 0.9072 | 0.0425 |
| O-ICM | 54 | 16.4 | 57.4 | 0.7893 | 0.1010 |
| B-ICM | 63 | 15.4 | 51.2 | 0.9392 | 0.0182 |
), ArticleFig(id=1241838580381848447, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=表1, caption=
算例1各方法计算结果比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法名称 | 迭代次数 | 运行时间 | 柔顺度值 | 离散度值DR | 离散度值Mnd |
|---|
| SIMPH | 515 | 83.3 | 53.2 | 0.9385 | 0.0282 |
| FPTO | 169 | 49.8 | 50.1 | 0.5520 | 0.0861 |
| SEMDOT | 124 | 222.3 | 50.9 | 0.9072 | 0.0425 |
| O-ICM | 54 | 16.4 | 57.4 | 0.7893 | 0.1010 |
| B-ICM | 63 | 15.4 | 51.2 | 0.9392 | 0.0182 |
), ArticleFig(id=1241838580465734527, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Table 2, caption=
Optimal topology comparison of different methods for Example 1
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法名称 | 单元拓扑值分布 | 光滑边界最优结构 |
|---|
| SIMPH |  |  |
| FPTO |  |  |
| SEMDOT |  |  |
| O-ICM |  |  |
| B-ICM |  |  |
), ArticleFig(id=1241838580574786434, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=表2, caption=
算例1各方法最优拓扑比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法名称 | 单元拓扑值分布 | 光滑边界最优结构 |
|---|
| SIMPH |  |  |
| FPTO |  |  |
| SEMDOT |  |  |
| O-ICM |  |  |
| B-ICM |  |  |
), ArticleFig(id=1241838580688032647, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Table 3, caption=
Result comparison of different methods for Example 2
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法名称 | 迭代次数 | 运行时间 | 柔顺度值 | 离散度值DR | 离散度值Mnd |
|---|
| SIMPH | 1262 | 311.6 | 30.8;30.8 | 0.9898 | 0.0027 |
| FPTO | 112 | 47.2 | 30.3;30.3 | 0.5379 | 0.0991 |
| SEMDOT | 122 | 314.5 | 30.4;30.4 | 0.9245 | 0.0299 |
| O-ICM | 78 | 33.4 | 32.1;32.1 | 0.8371 | 0.0774 |
| B-ICM | 46 | 17.8 | 30.6;30.6 | 0.9550 | 0.0135 |
), ArticleFig(id=1241838580776113030, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=表3, caption=
算例2各方法计算结果比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法名称 | 迭代次数 | 运行时间 | 柔顺度值 | 离散度值DR | 离散度值Mnd |
|---|
| SIMPH | 1262 | 311.6 | 30.8;30.8 | 0.9898 | 0.0027 |
| FPTO | 112 | 47.2 | 30.3;30.3 | 0.5379 | 0.0991 |
| SEMDOT | 122 | 314.5 | 30.4;30.4 | 0.9245 | 0.0299 |
| O-ICM | 78 | 33.4 | 32.1;32.1 | 0.8371 | 0.0774 |
| B-ICM | 46 | 17.8 | 30.6;30.6 | 0.9550 | 0.0135 |
), ArticleFig(id=1241838580872582025, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=EN, label=Table 4, caption=
Optimal topology comparison of different methods for Example 2
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法名称 | 单元拓扑值分布 | 光滑边界最优结构 |
|---|
| SIMPH |  |  |
| FPTO |  |  |
| SEMDOT |  |  |
| O-ICM |  |  |
| B-ICM |  |  |
), ArticleFig(id=1241838580981633929, tenantId=1146029695717560320, journalId=1241755870837649424, articleId=1241838548391891021, language=CN, label=表4, caption=
算例2各方法最优拓扑比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法名称 | 单元拓扑值分布 | 光滑边界最优结构 |
|---|
| SIMPH |  |  |
| FPTO |  |  |
| SEMDOT |  |  |
| O-ICM |  |  |
| B-ICM |  |  |
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