Article(id=1228805367577112716, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228805359561802007, articleNumber=null, orderNo=null, doi=10.16385/j.cnki.issn.1004-4523.2025.06.007, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1746460800000, receivedDateStr=2025-05-06, revisedDate=1748966400000, revisedDateStr=2025-06-04, acceptedDate=null, acceptedDateStr=null, onlineDate=1770899629730, onlineDateStr=2026-02-12, pubDate=1749484800000, pubDateStr=2025-06-10, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1770899629730, onlineIssueDateStr=2026-02-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1770899629730, creator=13701087609, updateTime=1770899629730, updator=13701087609, issue=Issue{id=1228805359561802007, tenantId=1146029695717560320, journalId=1225147924628267009, year='2025', volume='38', issue='6', pageStart='1133', pageEnd='1362', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1770899627819, creator=13701087609, updateTime=1770901542852, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1228813391846896476, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228805359561802007, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1228813391846896477, tenantId=1146029695717560320, journalId=1225147924628267009, issueId=1228805359561802007, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=1190, endPage=1198, ext={EN=ArticleExt(id=1228805367849742494, articleId=1228805367577112716, tenantId=1146029695717560320, journalId=1225147924628267009, language=EN, title=Method for predicting the high-cycle fatigue remaining useful life of aero-engine blades based on physics-informed neural networks, columnId=null, journalTitle=Journal of Vibration Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
As a core component of an aero-engine, the structural integrity of a blade directly determines the engine’s performance and flight safety. Under extreme working conditions such as high temperature, high pressure, and high-speed rotation, blades are prone to generating micro-cracks under the action of complex stress fields. Once cracks propagate and cause blade fracture, they will trigger chain damage, posing significant safety hazards. Based on the damage tolerance concept, the critical duration during which a blade can still operate safely after crack initiation is defined as the remaining useful life (RUL).To address this, this study proposes a mechanism-data dual-driven RUL prediction method integrating the Paris crack propagation law and physics-informed neural networks (PINN). By constructing a loss function that incorporates physical constraints, this method regularizes and constrains the gradients of the neural network. It enables inverse identification of crack propagation parameters while effectively improving the model’s prediction accuracy under limited monitoring data. For aero-engine blades and CT (compact tension) specimens, compared with traditional physical models and data-driven methods, the proposed method dynamically updates characteristic parameters to adapt to system changes, significantly reducing prediction errors under limited sample conditions. Additionally, the PINN model developed in this study features lightweight architecture and fast inference capabilities, meeting the requirements of online monitoring and predictive maintenance. This method provides a new technical pathway for health management and intelligent operation and maintenance of aero-engines.
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叶片作为航空发动机核心部件,其结构完整性直接决定发动机的性能与飞行安全。在高温、高压及高速旋转等极端工况下,叶片易在复杂应力场作用下产生微裂纹,一旦裂纹扩展、叶片发生断裂,将引发连锁破坏,构成重大安全隐患。基于损伤容限理念,叶片在出现裂纹后仍能维持安全运行的临界时长被界定为剩余寿命(remaining useful life,RUL)。为此,本文提出一种基于Paris裂纹扩展定律与物理信息神经网络(physics-informed neural network,PINN)融合的机理-数据双驱动的剩余寿命预测方法。该方法通过构建包含物理约束的损失函数,对神经网络梯度进行正则化约束,在实现裂纹扩展参数逆向辨识的同时,有效提升了模型在有限监测数据条件下的预测准确性。针对航发叶片与CT试样,相较于传统物理模型与数据驱动方法,本文方法动态更新特征参数以适应系统的变化,在有限样本条件下的预测误差显著降低。此外,本文所构建的PINN模型具有轻量化特性与快速推理能力,可以满足在线监测与预测性维护的需求,为航空发动机健康管理和智能运维提供了一种技术路径。
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1.北京化工大学高端压缩机及系统技术全国重点实验室,北京 100029, bio={"content":"
张羽(1998—),女,博士研究生。E-mail:zhangyumail2022@163.com
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张羽(1998—),女,博士研究生。E-mail:zhangyumail2022@163.com
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1.State Key Laboratory of High-End Compressor and System Technology,Beijing University of Chemical Technology,Beijing 100029,China
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2.Beijing Key Laboratory of Health Monitoring and Self-Recovery for High-End Mechanical Equipment,Beijing University of Chemical Technology,Beijing 100029,China), AuthorCompanyExt(id=1228805370282439005, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, companyId=1228805370261467482, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.北京化工大学高端机械装备健康监控与自愈化北京市重点实验室,北京 100029)])]), Author(id=1228805370970304930, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1228805371087745452, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, authorId=1228805370970304930, language=EN, stringName=Qingcheng LIU, firstName=Qingcheng, middleName=null, lastName=LIU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.State Key Laboratory of High-End Compressor and System Technology,Beijing University of Chemical Technology,Beijing 100029,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1228805371188408755, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, authorId=1228805370970304930, language=CN, stringName=刘庆成, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.北京化工大学高端压缩机及系统技术全国重点实验室,北京 100029, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1228805370127249744, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, xref=1., ext=[AuthorCompanyExt(id=1228805370135638352, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, companyId=1228805370127249744, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.State Key Laboratory of High-End Compressor and System Technology,Beijing University of Chemical Technology,Beijing 100029,China), AuthorCompanyExt(id=1228805370139832658, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, companyId=1228805370127249744, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.北京化工大学高端压缩机及系统技术全国重点实验室,北京 100029)])]), Author(id=1228805371284877755, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1228805371427484105, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, authorId=1228805371284877755, language=EN, stringName=Kexin HAN, firstName=Kexin, middleName=null, lastName=HAN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.State Key Laboratory of High-End Compressor and System Technology,Beijing University of Chemical Technology,Beijing 100029,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1228805371544924627, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, authorId=1228805371284877755, language=CN, stringName=韩可欣, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.北京化工大学高端压缩机及系统技术全国重点实验室,北京 100029, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1228805370127249744, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, xref=1., ext=[AuthorCompanyExt(id=1228805370135638352, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, companyId=1228805370127249744, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1, 2, address=
1.State Key Laboratory of High-End Compressor and System Technology,Beijing University of Chemical Technology,Beijing 100029,China
2.Beijing Key Laboratory of Health Monitoring and Self-Recovery for High-End Mechanical Equipment,Beijing University of Chemical Technology,Beijing 100029,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1228805371859497453, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, authorId=1228805371649782235, language=CN, stringName=王维民, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.北京化工大学高端压缩机及系统技术全国重点实验室,北京 100029
2.北京化工大学高端机械装备健康监控与自愈化北京市重点实验室,北京 100029, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1228805370127249744, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, xref=1., ext=[AuthorCompanyExt(id=1228805370135638352, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, companyId=1228805370127249744, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2.北京化工大学高端机械装备健康监控与自愈化北京市重点实验室,北京 100029)])]), Author(id=1228805371976937972, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, orderNo=5, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1228805372073406973, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, authorId=1228805371976937972, language=EN, stringName=Jinji GAO, firstName=Jinji, middleName=null, lastName=GAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1.State Key Laboratory of High-End Compressor and System Technology,Beijing University of Chemical Technology,Beijing 100029,China
2.Beijing Key Laboratory of Health Monitoring and Self-Recovery for High-End Mechanical Equipment,Beijing University of Chemical Technology,Beijing 100029,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1228805372153098755, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, authorId=1228805371976937972, language=CN, stringName=高金吉, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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18(2): 107-118., articleTitle=A study of stochastic fatigue crack growth modeling through experimental data, refAbstract=null)], funds=[Fund(id=1228805376099938986, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, awardId=92160203, language=CN, fundingSource=国家自然科学基金资助项目(92160203), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1228805370127249744, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, xref=1., ext=[AuthorCompanyExt(id=1228805370135638352, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, companyId=1228805370127249744, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2.北京化工大学高端机械装备健康监控与自愈化北京市重点实验室,北京 100029)])], figs=[ArticleFig(id=1228805373327503936, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Fig. 1, caption=
The PINN model based on Paris formula used to solve the network architecture diagram, figureFileSmall=vKP2cn5dnEGtNZVzZFkUtw==, figureFileBig=YPZo/vmgkpmmsd6THKIc2g==, tableContent=null), ArticleFig(id=1228805373403001411, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=图1, caption=
基于Paris公式的PINN模型求解网络架构图, figureFileSmall=vKP2cn5dnEGtNZVzZFkUtw==, figureFileBig=YPZo/vmgkpmmsd6THKIc2g==, tableContent=null), ArticleFig(id=1228805373625299533, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Fig. 2, caption=
The vibration test bench, figureFileSmall=OZhOkFM+9Qs3yBgk4XmGEA==, figureFileBig=pdzed7I10vB47M+qiZlWMQ==, tableContent=null), ArticleFig(id=1228805373730157138, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=图2, caption=
振动试验台, figureFileSmall=OZhOkFM+9Qs3yBgk4XmGEA==, figureFileBig=pdzed7I10vB47M+qiZlWMQ==, tableContent=null), ArticleFig(id=1228805373847597652, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Fig. 3, caption=
The crack propagation process of the test blade, figureFileSmall=5K8iwOvSh7+pWmhMSMPtbg==, figureFileBig=XViQotJ5kL/eBLs0TKUZIA==, tableContent=null), ArticleFig(id=1228805373944066651, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=图3, caption=
试验叶片的裂纹扩展过程, figureFileSmall=5K8iwOvSh7+pWmhMSMPtbg==, figureFileBig=XViQotJ5kL/eBLs0TKUZIA==, tableContent=null), ArticleFig(id=1228805374015369821, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Fig. 4, caption=
Variation of the crack length and resonant frequency of the test blade, figureFileSmall=VrFas3fnCtK6AnGTRS/IgA==, figureFileBig=hNo0njVNiGEBy6V0zLAkeA==, tableContent=null), ArticleFig(id=1228805374103450209, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=图4, caption=
试验叶片的裂纹长度与共振频率变化, figureFileSmall=VrFas3fnCtK6AnGTRS/IgA==, figureFileBig=hNo0njVNiGEBy6V0zLAkeA==, tableContent=null), ArticleFig(id=1228805374178947683, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Fig. 5, caption=
Comparison of prediction results for blade tests with physical model method and data-driven method, figureFileSmall=GsU6M4zAh/X/7SLbmuoa2g==, figureFileBig=3QZ6K/av9kOh68BGc9vDzA==, tableContent=null), ArticleFig(id=1228805374250250856, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=图5, caption=
叶片试验的预测结果与物理模型方法和数据驱动方法的对比, figureFileSmall=GsU6M4zAh/X/7SLbmuoa2g==, figureFileBig=3QZ6K/av9kOh68BGc9vDzA==, tableContent=null), ArticleFig(id=1228805374329942635, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Fig. 6, caption=
The lg(da/dN) - lg(ΔK) curves obtained from blade tests, figureFileSmall=qpxfkc/XH0QgjNKdejXfYQ==, figureFileBig=s9AuXRtlaGue+uxIUB/0AQ==, tableContent=null), ArticleFig(id=1228805374497714799, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=图6, caption=
叶片试验得到的lg (da/dN) - lg (ΔK) 曲线, figureFileSmall=qpxfkc/XH0QgjNKdejXfYQ==, figureFileBig=s9AuXRtlaGue+uxIUB/0AQ==, tableContent=null), ArticleFig(id=1228805374589989491, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Fig. 7, caption=
Comparison of prediction results from CT specimens with physical model method and data-driven method, figureFileSmall=dJP+vTfQ/1H8l6ZzrC6z1g==, figureFileBig=3OVU6InDudnFBU0vDEAd7g==, tableContent=null), ArticleFig(id=1228805374665486966, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=图7, caption=
CT试样的预测结果与物理模型方法和数据驱动方法的对比, figureFileSmall=dJP+vTfQ/1H8l6ZzrC6z1g==, figureFileBig=3OVU6InDudnFBU0vDEAd7g==, tableContent=null), ArticleFig(id=1228805374740984442, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Fig. 8, caption=
The lg(da/dN) - lg(ΔK) curves obtained from CT specimens, figureFileSmall=4yOoizFNTfDdV6siR631WQ==, figureFileBig=dmDFVShy49eLbfGtKv2xRA==, tableContent=null), ArticleFig(id=1228805374841647739, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=图8, caption=
CT试样得到的lg (da/dN) - lg (ΔK) 曲线, figureFileSmall=4yOoizFNTfDdV6siR631WQ==, figureFileBig=dmDFVShy49eLbfGtKv2xRA==, tableContent=null), ArticleFig(id=1228805374917145213, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Fig. 9, caption=
Error band plot of model prediction performance, figureFileSmall=abO3NjWRC8Q7y94g3T9mMw==, figureFileBig=JYXEavLpFNLuJeqw465VUw==, tableContent=null), ArticleFig(id=1228805375017808514, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=图9, caption=
模型预测性能误差带图, figureFileSmall=abO3NjWRC8Q7y94g3T9mMw==, figureFileBig=JYXEavLpFNLuJeqw465VUw==, tableContent=null), ArticleFig(id=1228805375122666118, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Tab.1, caption=
The PINN hyper-parameters
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| 参数 | 取值 |
|---|
| 神经网络隐藏层层数 | 5 |
| 神经网络隐藏层的神经元数 | 128 |
| 训练轮次 | 30000 |
| 学习率 | 0.001 |
| λd、λp | 1、100 |
), ArticleFig(id=1228805375206552203, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=表1, caption=
PINN超参数
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| 参数 | 取值 |
|---|
| 神经网络隐藏层层数 | 5 |
| 神经网络隐藏层的神经元数 | 128 |
| 训练轮次 | 30000 |
| 学习率 | 0.001 |
| λd、λp | 1、100 |
), ArticleFig(id=1228805375290438284, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Tab.2, caption=
Pseudo-code of the PINN training method
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| 算法1: 裂纹产生及扩展试验 |
|---|
| 输入: 早期监测数据、ared、nred |
| 1: repeat |
| 2: /*前向预测*/ |
| 3: npre=NN(ared) |
| 4: Ld=MSELoss(npre,nred) |
| 5: ap=random sampling∈[a0,aC] |
| 6: np=NN(ap) |
| 7: |
| 8: |
| 9: |
| 10: Losstotal=λdLd+λpLp |
| 11: Losstotal·backend(·) |
| 12: Optimizer.step(Wi,bi,C,m) |
| 13: until 损失函数收敛 |
| 14: return NN、C、m |
), ArticleFig(id=1228805375416267409, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=表2, caption=
物理信息神经网络(PINN)训练伪代码
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法1: 裂纹产生及扩展试验 |
|---|
| 输入: 早期监测数据、ared、nred |
| 1: repeat |
| 2: /*前向预测*/ |
| 3: npre=NN(ared) |
| 4: Ld=MSELoss(npre,nred) |
| 5: ap=random sampling∈[a0,aC] |
| 6: np=NN(ap) |
| 7: |
| 8: |
| 9: |
| 10: Losstotal=λdLd+λpLp |
| 11: Losstotal·backend(·) |
| 12: Optimizer.step(Wi,bi,C,m) |
| 13: until 损失函数收敛 |
| 14: return NN、C、m |
), ArticleFig(id=1228805375533707924, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Tab.3, caption=
Material properties of TC4
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| 密度/(kg·m−3) | 弹性模量/MPa | 泊松比 | 抗拉强度/MPa | 屈服强度/MPa |
|---|
| 4440 | 1.1×105 | 0.34 | 895 | 825 |
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TC4材料性能
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| 密度/(kg·m−3) | 弹性模量/MPa | 泊松比 | 抗拉强度/MPa | 屈服强度/MPa |
|---|
| 4440 | 1.1×105 | 0.34 | 895 | 825 |
), ArticleFig(id=1228805375722451611, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Tab.4, caption=
The crack propagation test data
, figureFileSmall=null, figureFileBig=null, tableContent=
| 裂纹长度/mm | 循环次数 |
|---|
| 7 | 0 |
| 8 | 1.37×107 |
| 9.5 | 4.34×107 |
| 10.5 | 4.83×107 |
| 12 | 1.13×108 |
| 14 | 1.74×108 |
| 16 | 2.18×108 |
| 18 | 2.81×108 |
| 19 | 3.17×108 |
| 20.5 | 3.60×108 |
| 22 | 4.15×108 |
| 23 | 4.55×108 |
| 25 | 5.23×108 |
), ArticleFig(id=1228805375789560477, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=表4, caption=
裂纹扩展试验数据
, figureFileSmall=null, figureFileBig=null, tableContent=
| 裂纹长度/mm | 循环次数 |
|---|
| 7 | 0 |
| 8 | 1.37×107 |
| 9.5 | 4.34×107 |
| 10.5 | 4.83×107 |
| 12 | 1.13×108 |
| 14 | 1.74×108 |
| 16 | 2.18×108 |
| 18 | 2.81×108 |
| 19 | 3.17×108 |
| 20.5 | 3.60×108 |
| 22 | 4.15×108 |
| 23 | 4.55×108 |
| 25 | 5.23×108 |
), ArticleFig(id=1228805375877640865, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=EN, label=Tab.5, caption=
Comparison of evaluation indicators of each method
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| 模型 | R² | RMSE | MAE | MAPE/% |
|---|
| PINN模型 | 0.90 | 3.11×107 | 2.79×107 | 8.08 |
| 传统物理模型 | 0.45 | 1.68×108 | 1.62×108 | 41.20 |
| 数据驱动方法 | 0.07 | 2.17×108 | 2.11×108 | 53.77 |
), ArticleFig(id=1228805375969915554, tenantId=1146029695717560320, journalId=1225147924628267009, articleId=1228805367577112716, language=CN, label=表5, caption=
各方法的评价指标对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | R² | RMSE | MAE | MAPE/% |
|---|
| PINN模型 | 0.90 | 3.11×107 | 2.79×107 | 8.08 |
| 传统物理模型 | 0.45 | 1.68×108 | 1.62×108 | 41.20 |
| 数据驱动方法 | 0.07 | 2.17×108 | 2.11×108 | 53.77 |
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