Article(id=1243306310943490777, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306309064442584, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2025.05.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1732204800000, receivedDateStr=2024-11-22, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774356924042, onlineDateStr=2026-03-24, pubDate=1747670400000, pubDateStr=2025-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774356924042, onlineIssueDateStr=2026-03-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774356924042, creator=13701087609, updateTime=1774356924042, updator=13701087609, issue=Issue{id=1243306309064442584, tenantId=1146029695717560320, journalId=1240685776644648972, year='2025', volume='29', issue='5', pageStart='681', pageEnd='848', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1774356923595, creator=13701087609, updateTime=1774357065180, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1243306902965301262, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306309064442584, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1243306902965301263, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306309064442584, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=767, endPage=775, ext={EN=ArticleExt(id=1243306311153205978, articleId=1243306310943490777, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Structural reliability analysis method based on synthetic minority over-sampling technique algorithm and Bayesian optimization neural network, columnId=1242129251223274417, journalTitle=Journal of Ship Mechanics, columnName=Structural Mechanics, runingTitle=null, highlight=null, articleAbstract=
A structural reliability analysis method based on synthetic minority over-sampling technique (SMOTE) algorithm and Bayesian optimization (BO) neural network was proposed in this paper to improve the calculation accuracy and analysis efficiency of the impact resistance reliability of lubricating oil cooler. Firstly, the uniform design (UD) method and SMOTE algorithm were used to improve the utilization efficiency of the sample points. Secondly, the Bayesian optimization algorithm was used to optimize the hyperparameters, initial weights and initial biases of the BP neural network to improve the fitting accuracy and generalization ability of the model. Finally, the optimized surrogate model was combined with the Monte Carlo (MC) method to calculate the structural reliability. The results show that, compared with the traditional surrogate model method, the proposed method has the advantages of higher accuracy, shorter analysis time and lower calculation cost. The analysis method proposed in this paper has great applicability in the impact resistance reliability analysis of lubricating oil cooler. The analysis results provide technical guidance and theoretical support for the impact resistance design of lubricating oil cooler.
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为提高滑油冷却器抗冲击可靠性的计算精度和分析效率,本文提出一种基于少数类合成的过采样(SMOTE)算法和贝叶斯优化(BO)神经网络的结构可靠性分析方法。该方法首先采用均匀设计(UD)方法和少数类合成的过采样算法提高样本点的利用效率,其次使用贝叶斯优化算法优化BP神经网络超参数、初始权值和初始偏置,以提高模型的拟合精度和泛化能力,最后利用优化后的代理模型结合Monte Carlo法计算结构可靠度。研究表明:相较于传统的代理模型法,本文的方法具有计算精度高、分析时间短、计算成本低的优势。本文提出的分析方法在滑油冷却器抗冲击可靠性分析中具有良好的适用性,分析结果可为滑油冷却器的抗冲击设计提供技术指导和理论支撑。
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Database expansion principle of SMOTE method, figureFileSmall=9VsOFlKZK5Qnv2GWqTD8cw==, figureFileBig=ino/1wMu7hRmu2F+Xz8c/A==, tableContent=null), ArticleFig(id=1243306319789278123, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=图1, caption=
SMOTE算法数据库扩充原理, figureFileSmall=9VsOFlKZK5Qnv2GWqTD8cw==, figureFileBig=ino/1wMu7hRmu2F+Xz8c/A==, tableContent=null), ArticleFig(id=1243306319986410422, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Fig.2, caption=
BP neural network structure, figureFileSmall=mJBay1g8qUXKe+Gm13URMw==, figureFileBig=ya6udOpuceVAvfz4Yaqd1g==, tableContent=null), ArticleFig(id=1243306320061907899, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=图2, caption=
BP神经网络结构, figureFileSmall=mJBay1g8qUXKe+Gm13URMw==, figureFileBig=ya6udOpuceVAvfz4Yaqd1g==, tableContent=null), ArticleFig(id=1243306320154182593, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Fig.3, caption=
Flow chart of SMOTE-BO-BP-MC algorithm, figureFileSmall=NFIg+IVn/AinSBkUUK1m+g==, figureFileBig=wB8kthGuAPI1TsakAtCL+Q==, tableContent=null), ArticleFig(id=1243306322117116875, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=图3, caption=
SMOTE-BO-BP-MC算法流程图, figureFileSmall=NFIg+IVn/AinSBkUUK1m+g==, figureFileBig=wB8kthGuAPI1TsakAtCL+Q==, tableContent=null), ArticleFig(id=1243306322188420047, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Fig.4, caption=
Sample distribution of training set in Case 1, figureFileSmall=CmHZjFMBywyL84ZZiDm8kQ==, figureFileBig=Xl24qPMU/1cLXICCdd+ICQ==, tableContent=null), ArticleFig(id=1243306322314249174, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=图4, caption=
算例1训练集样本分布, figureFileSmall=CmHZjFMBywyL84ZZiDm8kQ==, figureFileBig=Xl24qPMU/1cLXICCdd+ICQ==, tableContent=null), ArticleFig(id=1243306322393940957, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Fig.5, caption=
Comparison of training results of surrogate model in Case 1 before and after optimization, figureFileSmall=dNe1jHbfZidqjuxCrMD1tA==, figureFileBig=lJtzXtcL8CLzz3vzYaKRgQ==, tableContent=null), ArticleFig(id=1243306322477827047, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=图5, caption=
算例1代理模型优化前后训练结果对比, figureFileSmall=dNe1jHbfZidqjuxCrMD1tA==, figureFileBig=lJtzXtcL8CLzz3vzYaKRgQ==, tableContent=null), ArticleFig(id=1243306322603656173, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Fig.6, caption=
Relative error of different methods in Case 1, figureFileSmall=QRvO4RZf358fXjRqz/ab2Q==, figureFileBig=GcZK8rUoWNzJdk2XUcEYWA==, tableContent=null), ArticleFig(id=1243306324155548663, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=图6, caption=
算例1各方法相对误差, figureFileSmall=QRvO4RZf358fXjRqz/ab2Q==, figureFileBig=GcZK8rUoWNzJdk2XUcEYWA==, tableContent=null), ArticleFig(id=1243306324285572093, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Fig.7, caption=
Finite element model of lubricating oil cooler, figureFileSmall=ZoQqInQjCHrzOGLnU1O6dQ==, figureFileBig=DthEbO8FH11h2myK4Zn2wA==, tableContent=null), ArticleFig(id=1243306324377845763, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=图7, caption=
滑油冷却器有限元模型, figureFileSmall=ZoQqInQjCHrzOGLnU1O6dQ==, figureFileBig=DthEbO8FH11h2myK4Zn2wA==, tableContent=null), ArticleFig(id=1243306324465926153, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Fig.8, caption=
Triangular course of shock variation of the cooler, figureFileSmall=znermdzp0dzcvThwWtpYzg==, figureFileBig=MZc5TT46nvkI2Xsp/SeGUA==, tableContent=null), ArticleFig(id=1243306324583366671, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=图8, caption=
滑油冷却器的三角形变化历程, figureFileSmall=znermdzp0dzcvThwWtpYzg==, figureFileBig=MZc5TT46nvkI2Xsp/SeGUA==, tableContent=null), ArticleFig(id=1243306324692418581, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Fig.9, caption=
Predicted results of test sets, figureFileSmall=OlCH0X4Cz20ta6qAE12hkw==, figureFileBig=pncxXCtOkdIGd42uBPOMdg==, tableContent=null), ArticleFig(id=1243306324839219226, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=图9, caption=
测试集预测结果, figureFileSmall=OlCH0X4Cz20ta6qAE12hkw==, figureFileBig=pncxXCtOkdIGd42uBPOMdg==, tableContent=null), ArticleFig(id=1243306324931493922, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Fig.10, caption=
Plot of reliability against impact load, figureFileSmall=fG+Nu/F2SR1wJtKR0Nzraw==, figureFileBig=1ZIhlJsExpGiV59oEorMmw==, tableContent=null), ArticleFig(id=1243306325023768613, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=图10, caption=
可靠度随冲击载荷变化曲线, figureFileSmall=fG+Nu/F2SR1wJtKR0Nzraw==, figureFileBig=1ZIhlJsExpGiV59oEorMmw==, tableContent=null), ArticleFig(id=1243306325145403436, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Tab.1, caption=
Results of Case 1
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | Ncall | Pf | Cov/% | e/% |
|---|
| MC[18] | 5×107 | 2.85×10-5 | — | — |
| FORM[18] | — | 4.21×10-5 | — | 47.7 |
| IS[18] | 10 019 | 2.86×10-5 | 2.39 | 0.35 |
| BP-MC[7] | 124 | 3.22×10-5 | 3.87 | 12.98 |
| 改进RF-MC[19] | 124 | 3.15×10-5 | — | 4.91 |
| 传统BP-MC | 280 | 2.65×10-5 | 4.15 | 7.18 |
| BO-BP-MC | 100 | 3.40×10-5 | 4.04 | 19.28 |
| 本文 | 100 | 2.87×10-5 | 4.05 | 0.78 |
), ArticleFig(id=1243306325262843951, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=表1, caption=
算例1分析结果
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| 方法 | Ncall | Pf | Cov/% | e/% |
|---|
| MC[18] | 5×107 | 2.85×10-5 | — | — |
| FORM[18] | — | 4.21×10-5 | — | 47.7 |
| IS[18] | 10 019 | 2.86×10-5 | 2.39 | 0.35 |
| BP-MC[7] | 124 | 3.22×10-5 | 3.87 | 12.98 |
| 改进RF-MC[19] | 124 | 3.15×10-5 | — | 4.91 |
| 传统BP-MC | 280 | 2.65×10-5 | 4.15 | 7.18 |
| BO-BP-MC | 100 | 3.40×10-5 | 4.04 | 19.28 |
| 本文 | 100 | 2.87×10-5 | 4.05 | 0.78 |
), ArticleFig(id=1243306325338341426, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Tab.2, caption=
Random variables of Case 2
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| 随机变量 | 分布类型 | 均值 | 变异系数 |
|---|
| Fy | 正态分布 | 44 | 0.105 |
| As | 正态分布 | 4.08 | 0.02 |
| FC | 正态分布 | 3.12 | 0.14 |
| Q | 正态分布 | 2052 | 0.12 |
), ArticleFig(id=1243306328735727674, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=表2, caption=
算例2随机变量
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| 随机变量 | 分布类型 | 均值 | 变异系数 |
|---|
| Fy | 正态分布 | 44 | 0.105 |
| As | 正态分布 | 4.08 | 0.02 |
| FC | 正态分布 | 3.12 | 0.14 |
| Q | 正态分布 | 2052 | 0.12 |
), ArticleFig(id=1243306328823808066, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Tab.3, caption=
Results of Case 2
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| 方法 | Ncall | Pf | Cov/% | e/% |
|---|
| MC[21] | 1×105 | 0.011 01 | — | — |
| FORM[21] | — | 0.009 39 | — | 14.75 |
| Proposed method[21] | 5000 | 0.010 72 | — | 2.60 |
| 传统BP-MC | 280 | 0.123 30 | 2.83 | 11.98 |
| BO-BP-MC | 90 | 0.009 30 | 1.84 | 19.28 |
| 本文 | 90 | 0.011 35 | 1.70 | 3.06 |
), ArticleFig(id=1243306328928665672, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=表3, caption=
算例2分析结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方法 | Ncall | Pf | Cov/% | e/% |
|---|
| MC[21] | 1×105 | 0.011 01 | — | — |
| FORM[21] | — | 0.009 39 | — | 14.75 |
| Proposed method[21] | 5000 | 0.010 72 | — | 2.60 |
| 传统BP-MC | 280 | 0.123 30 | 2.83 | 11.98 |
| BO-BP-MC | 90 | 0.009 30 | 1.84 | 19.28 |
| 本文 | 90 | 0.011 35 | 1.70 | 3.06 |
), ArticleFig(id=1243306329008357453, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=EN, label=Tab.4, caption=
Random variables of lubricating oil cooler
, figureFileSmall=null, figureFileBig=null, tableContent=
| 随机变量 | 物理意义 | 分布类型 | 均值 | 标准差 |
|---|
| E/GPa | 弹性模量 | 正态分布 | 195 | 5.85 |
| thxb/mm | 支撑结构弧形板厚度 | 正态分布 | 20 | 1.00 |
| tdb/mm | 支撑结构底板厚度 | 正态分布 | 25 | 1.25 |
| tbl/mm | 支撑结构背板和肋板厚度 | 正态分布 | 20 | 1.00 |
| tfl/mm | 法兰板厚度 | 正态分布 | 26 | 1.30 |
| ttt/mm | 筒体结构厚度 | 正态分布 | 12 | 0.60 |
| tdg/mm | 端盖厚度 | 正态分布 | 12 | 0.60 |
| P/MPa | 容器内压 | 正态分布 | 1.0 | 0.1 |
), ArticleFig(id=1243306329083854935, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306310943490777, language=CN, label=表4, caption=
滑油冷却器随机变量
, figureFileSmall=null, figureFileBig=null, tableContent=
| 随机变量 | 物理意义 | 分布类型 | 均值 | 标准差 |
|---|
| E/GPa | 弹性模量 | 正态分布 | 195 | 5.85 |
| thxb/mm | 支撑结构弧形板厚度 | 正态分布 | 20 | 1.00 |
| tdb/mm | 支撑结构底板厚度 | 正态分布 | 25 | 1.25 |
| tbl/mm | 支撑结构背板和肋板厚度 | 正态分布 | 20 | 1.00 |
| tfl/mm | 法兰板厚度 | 正态分布 | 26 | 1.30 |
| ttt/mm | 筒体结构厚度 | 正态分布 | 12 | 0.60 |
| tdg/mm | 端盖厚度 | 正态分布 | 12 | 0.60 |
| P/MPa | 容器内压 | 正态分布 | 1.0 | 0.1 |
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