Article(id=1241686767988961492, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241686759470329942, articleNumber=null, orderNo=null, doi=10.16579/j.issn.1001.9669.2025.09.008, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1753372800000, receivedDateStr=2025-07-25, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773970794912, onlineDateStr=2026-03-20, pubDate=1757865600000, pubDateStr=2025-09-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773970794912, onlineIssueDateStr=2026-03-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773970794912, creator=13701087609, updateTime=1773970794912, updator=13701087609, issue=Issue{id=1241686759470329942, tenantId=1146029695717560320, journalId=1227999626482147330, year='2025', volume='47', issue='9', pageStart='1', pageEnd='249', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773970792882, creator=13701087609, updateTime=1773970911747, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241687258093375901, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241686759470329942, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241687258093375902, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241686759470329942, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=90, endPage=101, ext={EN=ArticleExt(id=1241686768567775457, articleId=1241686767988961492, tenantId=1146029695717560320, journalId=1227999626482147330, language=EN, title=Reliability analysis of high-temperature structure based on damage-threshold interference principle, columnId=null, journalTitle=Journal of Mechanical Strength, columnName=null, runingTitle=null, highlight=null, articleAbstract=
At present, the deterministic design and evaluation of high-temperature structural strength have been fully developed and formed a relatively complete system framework, laying the theoretical foundation for the design and manufacturing of numerous mechanical equipment under harsh service conditions. Considering the randomness of high-temperature structural failure and the small-sample characteristics of failure data, safety factors are usually adopted for conservative design in engineering. However, this often leads to structural redundancy and cost waste, so there is an urgent need to conduct research on design methods from determinism to uncertainty. Nevertheless, no universal and mature theoretical methods for high-temperature structural reliability or national/industrial standards have been established so far,making it difficult to effectively predict and guarantee the reliability of high-end equipment such as China's aero-engines during operation. Based on this, firstly, uncertainty analysis was elaborated. The damage-threshold interference criterion was introduced in detail, and its differences from and connections with the stress-strength interference criterion was explained.Finally, taking a certain steam turbine rotor as an example, it illustrates the engineering application of the damage-threshold interference criterion in the reliability analysis of high-temperature structures.
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当前,高温结构强度的确定性设计与评估已经得到了充分的发展,并形成了较为完备的体系框架,为严苛服役条件下机械装备的设计制造奠定了理论基础。考虑到高温结构失效的随机性和失效数据的小样本特性,工程中通常采用安全系数进行保守设计,但这往往造成结构冗余和成本浪费,亟须开展从确定性到不确定性的设计方法研究。然而,迄今尚未形成通用且成熟的高温结构可靠性理论方法或国家/行业标准,导致我国航空发动机等高端装备在运行过程中的可靠性难以得到有效预测和保障。基于此,首先阐述了不确定性分析;详细介绍了损伤-阈值干涉准则,并说明了其与应力-强度干涉准则的区别及联系;最后以某汽轮机转子为例,说明了损伤-阈值干涉准则在高温结构可靠性分析中的工程应用。
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张显程,男,1979年生,安徽安庆人,博士,教授,博士研究生导师;主要研究方向为机械装备寿命保障理论与技术;E-mail:xczhang@ecust.edu.cn。
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张显程,男,1979年生,安徽安庆人,博士,教授,博士研究生导师;主要研究方向为机械装备寿命保障理论与技术;E-mail:xczhang@ecust.edu.cn。
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169:107481., articleTitle=Creep-fatigue reliability assessment for high-temperature components fusing online monitoring data and physics-of-failure by engineering damage mechanics approach, refAbstract=null)], funds=[Fund(id=1241810821400039585, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, awardId=51725503, language=EN, fundingSource=National Natural Science Foundation of China(51725503), fundOrder=null, country=null), Fund(id=1241810821769138340, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, awardId=51725503, language=CN, fundingSource=国家自然科学基金项目(51725503), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1241810813934178321, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, xref=null, ext=[AuthorCompanyExt(id=1241810813938372626, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, companyId=1241810813934178321, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Key Laboratory of Pressure Systems and Safety, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China), AuthorCompanyExt(id=1241810813942566930, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, companyId=1241810813934178321, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=华东理工大学 承压系统与安全教育部重点实验室,上海 200237)])], figs=[ArticleFig(id=1241810817012797519, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Fig.1, caption=
Stress-strength interference criterion, figureFileSmall=oEaoSi1BC5w/VuHE647W0Q==, figureFileBig=d1NXNMF9+kdXzThGKYFd8g==, tableContent=null), ArticleFig(id=1241810817079906386, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=图1, caption=
应力-强度干涉准则, figureFileSmall=oEaoSi1BC5w/VuHE647W0Q==, figureFileBig=d1NXNMF9+kdXzThGKYFd8g==, tableContent=null), ArticleFig(id=1241810817180569685, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Fig.2, caption=
Multi-source uncertainties in the research, development,design and manufacturing of mechanical structures, figureFileSmall=joCHmeEkVMfPSbfM/iQXZw==, figureFileBig=LPtLINv7rfaOT+hfXaUjPg==, tableContent=null), ArticleFig(id=1241810817272844376, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=图2, caption=
机械结构研发、设计、制造中存在的多源不确定性, figureFileSmall=joCHmeEkVMfPSbfM/iQXZw==, figureFileBig=LPtLINv7rfaOT+hfXaUjPg==, tableContent=null), ArticleFig(id=1241810817335758940, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Fig.3, caption=
Schematic diagram of load uncertainty, figureFileSmall=bmemgBvZqZrcPPuYsp3LoQ==, figureFileBig=AbiF8Ws3jn6Y8YpypL7BAg==, tableContent=null), ArticleFig(id=1241810817428033629, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=图3, caption=
载荷不确定性示意图, figureFileSmall=bmemgBvZqZrcPPuYsp3LoQ==, figureFileBig=AbiF8Ws3jn6Y8YpypL7BAg==, tableContent=null), ArticleFig(id=1241810817520308321, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Fig.4, caption=
Physical connotation of damage definition, figureFileSmall=WZAJRMnQtvBkPuDChCjHMA==, figureFileBig=uvFeoy/Xae/dY2XE6M0cpQ==, tableContent=null), ArticleFig(id=1241810817633554532, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=图4, caption=
损伤定义的物理内涵, figureFileSmall=WZAJRMnQtvBkPuDChCjHMA==, figureFileBig=uvFeoy/Xae/dY2XE6M0cpQ==, tableContent=null), ArticleFig(id=1241810817725829224, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Fig.5, caption=
Damage accumulation under random loads, figureFileSmall=aHd+dLu9Jqyk+JZxqHWeKw==, figureFileBig=kUy8bkJogZzsIJkGBzG0vw==, tableContent=null), ArticleFig(id=1241810817826492523, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=图5, caption=
随机载荷作用下的损伤累积, figureFileSmall=aHd+dLu9Jqyk+JZxqHWeKw==, figureFileBig=kUy8bkJogZzsIJkGBzG0vw==, tableContent=null), ArticleFig(id=1241810817914572912, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Fig.6, caption=
Comparison of reliability index calculation results of equation (2) and equation (27) under random loads, figureFileSmall=bhchZk1QQXN41vHJmcqvGA==, figureFileBig=PsBOkxquIifpKjYkyTx0xA==, tableContent=null), ArticleFig(id=1241810818065567857, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=图6, caption=
随机载荷作用下式(2)、式(27)的可靠度指标计算结果对比, figureFileSmall=bhchZk1QQXN41vHJmcqvGA==, figureFileBig=PsBOkxquIifpKjYkyTx0xA==, tableContent=null), ArticleFig(id=1241810818157842548, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Fig.7, caption=
Comparison of reliability index calculation results of equation (23) and equation (34) under random loads, figureFileSmall=m56pesIch+hwhqKEd4dVJA==, figureFileBig=Uv3/qDFDjZJoCRsCpk43xw==, tableContent=null), ArticleFig(id=1241810818250117238, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=图7, caption=
随机载荷作用下式(23)、式(34)的可靠度指标计算结果对比, figureFileSmall=m56pesIch+hwhqKEd4dVJA==, figureFileBig=Uv3/qDFDjZJoCRsCpk43xw==, tableContent=null), ArticleFig(id=1241810818350780540, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Fig.8, caption=
Finite element model of the steam turbine rotor, figureFileSmall=Nb5A9+JQdykRxmRBwxzCQQ==, figureFileBig=m5TuYynWKytehiR64DBEHA==, tableContent=null), ArticleFig(id=1241810818434666621, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=图8, caption=
汽轮机转子有限元模型, figureFileSmall=Nb5A9+JQdykRxmRBwxzCQQ==, figureFileBig=m5TuYynWKytehiR64DBEHA==, tableContent=null), ArticleFig(id=1241810818518552706, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Fig.9, caption=
Correlation heatmap of different weak links of the steam turbine rotor, figureFileSmall=T2EgSq6UTH4oSLRgLvbucw==, figureFileBig=tfu2wlsuzm+ddckYV9oBSA==, tableContent=null), ArticleFig(id=1241810818615021700, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=图9, caption=
汽轮机转子不同薄弱环节的相关性热图, figureFileSmall=T2EgSq6UTH4oSLRgLvbucw==, figureFileBig=tfu2wlsuzm+ddckYV9oBSA==, tableContent=null), ArticleFig(id=1241810818694713480, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Fig.10, caption=
Rotor reliability prediction results of steam turbine at different start-stop frequencies, figureFileSmall=cFUMGyPPETjiIeHpm3SkTA==, figureFileBig=iRrttoN/SVUHe+qNUlShJA==, tableContent=null), ArticleFig(id=1241810818761822348, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=图10, caption=
汽轮机不同启停频率下的转子可靠性预测结果, figureFileSmall=cFUMGyPPETjiIeHpm3SkTA==, figureFileBig=iRrttoN/SVUHe+qNUlShJA==, tableContent=null), ArticleFig(id=1241810820380823694, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Tab.1, caption=
Each parameter and its distribution
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数Parameter | 均值Mean value | 标准差Standard deviation |
|---|
| α | 1.8×10-37 | — |
| n | 10.94 | — |
| s/MPa | 300/320/340 | 15/16/17 |
| Δt/s | 600 | 30 |
| Dth | 0.7 | 0.035 |
| R/MPa | 1 100 | 55 |
), ArticleFig(id=1241810820489875602, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=表1, caption=
各参数及其分布情况
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数Parameter | 均值Mean value | 标准差Standard deviation |
|---|
| α | 1.8×10-37 | — |
| n | 10.94 | — |
| s/MPa | 300/320/340 | 15/16/17 |
| Δt/s | 600 | 30 |
| Dth | 0.7 | 0.035 |
| R/MPa | 1 100 | 55 |
), ArticleFig(id=1241810820603121813, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Tab.2, caption=
Uncertain operating condition parameters in reliability evaluation of the steam turbine rotor
, figureFileSmall=null, figureFileBig=null, tableContent=
参数 Parameter | 变化范围 Variation range | 均值 Mean value | 标准差 Standard deviation |
|---|
转子初始温度 Initial temperature of rotor/℃ | 20~215 | 117.5 | 32.5 |
蒸汽温度 Steam temperature/℃ | 320~400 | 360 | 13.3 |
温升速率 Temperature rise rate/(℃/min) | 0.7~2 | 1.35 | 0.217 |
升转速率 Rising speed/(r/min2) | 20~100 | 60 | 13.3 |
升负荷速率 Load increase rate/(%/min) | 0.2~0.8 | 0.5 | 0.1 |
停机时间 Downtime/min | 180~360 | 270 | 30 |
), ArticleFig(id=1241810820707979416, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=表2, caption=
汽轮机转子可靠性评估中的不确定性工况参数
, figureFileSmall=null, figureFileBig=null, tableContent=
参数 Parameter | 变化范围 Variation range | 均值 Mean value | 标准差 Standard deviation |
|---|
转子初始温度 Initial temperature of rotor/℃ | 20~215 | 117.5 | 32.5 |
蒸汽温度 Steam temperature/℃ | 320~400 | 360 | 13.3 |
温升速率 Temperature rise rate/(℃/min) | 0.7~2 | 1.35 | 0.217 |
升转速率 Rising speed/(r/min2) | 20~100 | 60 | 13.3 |
升负荷速率 Load increase rate/(%/min) | 0.2~0.8 | 0.5 | 0.1 |
停机时间 Downtime/min | 180~360 | 270 | 30 |
), ArticleFig(id=1241810820968026267, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=EN, label=Tab.3, caption=
Damage evaluation results of different weak links
, figureFileSmall=null, figureFileBig=null, tableContent=
| SRG | 1st BG | 2nd BG | 3rd BG | 4th BG | 5th BG |
|---|
| μd | 5×10-5 | 6×10-5 | 8×10-6 | 3×10-5 | 3×10-5 | 2×10-5 |
 | 2×10-9 | 2×10-10 | 2×10-11 | 1×10-10 | 1×10-10 | 8×10-11 |
), ArticleFig(id=1241810821035135133, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241686767988961492, language=CN, label=表3, caption=
不同薄弱环节的损伤评估结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| SRG | 1st BG | 2nd BG | 3rd BG | 4th BG | 5th BG |
|---|
| μd | 5×10-5 | 6×10-5 | 8×10-6 | 3×10-5 | 3×10-5 | 2×10-5 |
 | 2×10-9 | 2×10-10 | 2×10-11 | 1×10-10 | 1×10-10 | 8×10-11 |
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