Article(id=1243306169498972460, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306166663622912, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2025.04.012, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1729699200000, receivedDateStr=2024-10-24, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774356890320, onlineDateStr=2026-03-24, pubDate=1745078400000, pubDateStr=2025-04-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774356890320, onlineIssueDateStr=2026-03-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774356890320, creator=13701087609, updateTime=1774356890320, 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=645, endPage=655, ext={EN=ArticleExt(id=1243306169742242097, articleId=1243306169498972460, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Mechanical properties of axial compression of tensile armor of unbonded flexible pipe with defects, columnId=1242129251223274417, journalTitle=Journal of Ship Mechanics, columnName=Structural Mechanics, runingTitle=null, highlight=null, articleAbstract=
As an important hub connecting offshore oil and gas fields and offshore platforms, unbonded flexible pipes play a vital role in marine production. As one of the main bearing parts of flexible pipes, the failure of the tensile armor layer will threaten the integrity of a pipeline system. Therefore, it is of great theoretical significance and engineering practical value to clarify the influence mechanism of various defects on the mechanical properties of the tensile armor layer and to study the mechanical behavior of the tensile armor layer. The axial compression performance of the tensile armor layer of an unbonded flexible pipe with defects was studied by numerical simulation method. A five-layer unbonded flexible pipe axial compression finite element model was established. The effects of non-metallic layer defect size, interlayer friction coefficient and steel strip fracture on the axial compression stiffness and critical buckling load of the flexible pipe were studied. The research results show that the decrease in the friction coefficient caused by the increase in the annular water content will significantly reduce the critical buckling load, and that the defects in non-metallic layer and the fracture of steel strip will significantly reduce the axial compression stiffness and critical buckling load. Therefore, in engineering, more attention should be paid to the annular water content and the structural integrity of each layer. The results can provide a reference for flexible pipe design and integrity management.
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非粘结柔性软管作为海洋油气田与海上平台连接的重要枢纽,在海洋生产中起着至关重要的作用。抗拉铠装层作为柔性软管的主要承载部件之一,一旦出现失效将对管道系统的完整性产生威胁。因此,明确各类缺陷对抗拉铠装层力学性能的影响机理,并研究抗拉铠装层力学行为规律具有重要的理论意义和工程实用价值。本文采用数值模拟方法,研究含缺陷非粘结柔性软管抗拉铠装层的轴向压缩性能,建立五层非粘结柔性软管轴向压缩有限元模型,分别研究非金属层缺陷尺寸、层间摩擦系数和钢带断裂三种因素对柔性软管轴向压缩刚度和临界屈曲载荷的影响规律。研究结果表明,环空含水率上升引发的摩擦系数减小会显著降低临界屈曲载荷,非金属层缺陷和钢带断裂会显著降低轴向压缩刚度和临界屈曲载荷,因此,在工程中应重点关注环空含水率和各层结构完整性。上述结果可为柔性软管设计和完整性管理提供一定参考。
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陈严飞(1982-),男,博士,教授,通讯作者,E-mail:ychen@cup.edu.cn。
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陈严飞(1982-),男,博士,教授,通讯作者,E-mail:ychen@cup.edu.cn。
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2004., articleTitle=Instability of tensile armour layers of flexible pipe under external pressure, refAbstract=null)], funds=[Fund(id=1243306187593200512, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, awardId=52171285, language=CN, fundingSource=国家自然科学基金资助项目(52171285), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1243306177174548994, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, xref=null, ext=[AuthorCompanyExt(id=1243306177182937605, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, companyId=1243306177174548994, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=National Engineering Laboratory of Oil and Gas Pipeline Transportation Safety, Beijing Key Laboratory of Urban Oil and Gas Transmission and Distribution Technology, Beijing 102249, China), AuthorCompanyExt(id=1243306177191326213, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, companyId=1243306177174548994, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=油气管道输送安全国家工程实验室,城市油气输配技术北京市重点实验室,北京 102249)])], figs=[ArticleFig(id=1243306182794916570, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.1, caption=
Failure mode of the tensile armor layer of unbonded flexible pipe, figureFileSmall=eFKMHI+TiNzJ2Hzzfn1bZw==, figureFileBig=OHSPSDAFMmEklpGDW9ucUw==, tableContent=null), ArticleFig(id=1243306182895579873, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图1, caption=
非粘结柔性软管抗拉铠装层失效模式, figureFileSmall=eFKMHI+TiNzJ2Hzzfn1bZw==, figureFileBig=OHSPSDAFMmEklpGDW9ucUw==, tableContent=null), ArticleFig(id=1243306183126266603, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.2, caption=
Finite element model of 6" flexible pipe, figureFileSmall=nX3T9Vfzc2AkN66qla6dNw==, figureFileBig=EKc9TMpgaKjmZV0Y/uoydQ==, tableContent=null), ArticleFig(id=1243306184623633136, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图2, caption=
6英寸柔性软管有限元模型, figureFileSmall=nX3T9Vfzc2AkN66qla6dNw==, figureFileBig=EKc9TMpgaKjmZV0Y/uoydQ==, tableContent=null), ArticleFig(id=1243306184715907829, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.3, caption=
Effect of mesh accuracy on axial compression load, figureFileSmall=Sh0f5NafCs/rkjebXB6TyA==, figureFileBig=guCI2JgFuEMeU/8U21AWKQ==, tableContent=null), ArticleFig(id=1243306184841736955, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图3, caption=
网格精度对临界屈曲载荷的影响, figureFileSmall=Sh0f5NafCs/rkjebXB6TyA==, figureFileBig=guCI2JgFuEMeU/8U21AWKQ==, tableContent=null), ArticleFig(id=1243306184934011648, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.4, caption=
Results comparison between the finite element model in this paper and Malta's method, figureFileSmall=eDAe+wamBTn++TQk80K0Zg==, figureFileBig=z0FJ/d83WvWAjrduYciUKw==, tableContent=null), ArticleFig(id=1243306185051452166, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图4, caption=
本文有限元模型与Malta结果[14]对比, figureFileSmall=eDAe+wamBTn++TQk80K0Zg==, figureFileBig=z0FJ/d83WvWAjrduYciUKw==, tableContent=null), ArticleFig(id=1243306185168892681, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.5, caption=
Finite element model of flexible pipe with defects in nonmetallic layers, figureFileSmall=EHCxxXQd92xr7wqLH470pw==, figureFileBig=umDoaIDL44PMScHlgQlYMg==, tableContent=null), ArticleFig(id=1243306185282138895, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图5, caption=
含非金属层缺陷的柔性软管有限元模型, figureFileSmall=EHCxxXQd92xr7wqLH470pw==, figureFileBig=umDoaIDL44PMScHlgQlYMg==, tableContent=null), ArticleFig(id=1243306185395385108, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.6, caption=
Buckling modes of flexible pipe with different defect sizes, figureFileSmall=DzmYXNTawvKSawrTNqpM1A==, figureFileBig=JHuHwLPVU+484GKwrG0pXA==, tableContent=null), ArticleFig(id=1243306185479271191, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图6, caption=
不同缺陷尺寸下的柔性软管的屈曲模态, figureFileSmall=DzmYXNTawvKSawrTNqpM1A==, figureFileBig=JHuHwLPVU+484GKwrG0pXA==, tableContent=null), ArticleFig(id=1243306185609294621, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.7, caption=
Axial compression mechanical performance of flexible pipe with different degrees of non-metallic layer defects, figureFileSmall=s9dNW9fjG9Zh9Ld5SmeeMQ==, figureFileBig=SuFdCfNR+lVokEk5ZRgKcw==, tableContent=null), ArticleFig(id=1243306185714152227, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图7, caption=
不同程度非金属层缺陷的柔性软管轴向压缩力学性能曲线, figureFileSmall=s9dNW9fjG9Zh9Ld5SmeeMQ==, figureFileBig=SuFdCfNR+lVokEk5ZRgKcw==, tableContent=null), ArticleFig(id=1243306185839981350, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.8, caption=
Buckling modes of the tensile armor with different friction coefficients, figureFileSmall=tUC1XGkjM6ump/DaBOW3lA==, figureFileBig=uxo2go2ESXy3X4UMCrqHrw==, tableContent=null), ArticleFig(id=1243306185961616171, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图8, caption=
不同摩擦系数下抗拉铠装层的屈曲模态, figureFileSmall=tUC1XGkjM6ump/DaBOW3lA==, figureFileBig=uxo2go2ESXy3X4UMCrqHrw==, tableContent=null), ArticleFig(id=1243306186070668081, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.9, caption=
Compression load-strain curves under different friction coefficients, figureFileSmall=a+ityA0D/tk5Z3HktHv5XQ==, figureFileBig=dw2KcubmlbWYBCLLdM1cHA==, tableContent=null), ArticleFig(id=1243306186188108595, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图9, caption=
不同摩擦系数下的轴向压缩载荷-轴向压缩应变曲线, figureFileSmall=a+ityA0D/tk5Z3HktHv5XQ==, figureFileBig=dw2KcubmlbWYBCLLdM1cHA==, tableContent=null), ArticleFig(id=1243306186271994680, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.10, caption=
Loading condition of each layer of flexible pipe with different friction coefficients, figureFileSmall=DntZabJ/2DoYXBSJLXt55g==, figureFileBig=O6uuW0U2TXYtipbAU0fgNg==, tableContent=null), ArticleFig(id=1243306186372657978, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图10, caption=
不同摩擦系数下柔性软管各层的受载情况, figureFileSmall=DntZabJ/2DoYXBSJLXt55g==, figureFileBig=O6uuW0U2TXYtipbAU0fgNg==, tableContent=null), ArticleFig(id=1243306186469126976, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.11, caption=
Three-dimensional finite element model of the flexible pipe with broken wires, figureFileSmall=4pxesvJxKxhniM0Xa5WL/Q==, figureFileBig=C0F9GKHvE4aIbqmlds+bfw==, tableContent=null), ArticleFig(id=1243306186582373188, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图11, caption=
含断裂钢带的柔性软管三维有限元模型, figureFileSmall=4pxesvJxKxhniM0Xa5WL/Q==, figureFileBig=C0F9GKHvE4aIbqmlds+bfw==, tableContent=null), ArticleFig(id=1243306186678842185, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.12, caption=
Compressive load-strain curves of the flexible pipe with broken wires under different conditions, figureFileSmall=Aggc40L8cqSARfCZexsM7w==, figureFileBig=+8ittttKzgKPCCjr24XIvQ==, tableContent=null), ArticleFig(id=1243306186766922574, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图12, caption=
钢带断裂条件下柔性软管的压缩载荷-压缩应变曲线, figureFileSmall=Aggc40L8cqSARfCZexsM7w==, figureFileBig=+8ittttKzgKPCCjr24XIvQ==, tableContent=null), ArticleFig(id=1243306186859197268, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.13, caption=
Loading condition of each layer of flexible pipe with different number of broken outer wires, figureFileSmall=79mtazIUmoqqXlL7eu3U+w==, figureFileBig=IQy2jvCy0h3uvoU9gfq4xg==, tableContent=null), ArticleFig(id=1243306186951471960, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图13, caption=
外部钢带断裂条件下软管各层的受载情况, figureFileSmall=79mtazIUmoqqXlL7eu3U+w==, figureFileBig=IQy2jvCy0h3uvoU9gfq4xg==, tableContent=null), ArticleFig(id=1243306187026969438, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Fig.14, caption=
Load condition of each layer of flexible pipe with different number of broken inner wires, figureFileSmall=97rmPgYdLz06Yr4mYcpSHQ==, figureFileBig=qyt5+az1KY/TkH3Ep3q6qw==, tableContent=null), ArticleFig(id=1243306187110855524, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=图14, caption=
内部钢带断裂条件下软管各层的受载情况, figureFileSmall=97rmPgYdLz06Yr4mYcpSHQ==, figureFileBig=qyt5+az1KY/TkH3Ep3q6qw==, tableContent=null), ArticleFig(id=1243306187203130218, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Tab.1, caption=
Geometric parameters of 6" flexible pipe
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层名称 | 材料 | 尺寸/mm | 厚度/mm | 钢带数量/个 | 铺设角度/° | 外径/mm |
|---|
| 刚性内核 | — | — | — | — | — | 198.5 |
| 内抗拉铠装层 | 碳钢 | 8×4 | — | 50 | 36 | 206.5 |
| 外抗拉铠装层 | 碳钢 | 8×4 | — | 52 | −38 | 214.5 |
| 抗鸟笼带 | 凯夫拉49 | — | 0.2 | — | — | 214.9 |
| 外包覆层 | 高密度聚乙烯 | — | 7 | — | — | 228.9 |
), ArticleFig(id=1243306187299599215, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=表1, caption=
6英寸柔性软管几何参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层名称 | 材料 | 尺寸/mm | 厚度/mm | 钢带数量/个 | 铺设角度/° | 外径/mm |
|---|
| 刚性内核 | — | — | — | — | — | 198.5 |
| 内抗拉铠装层 | 碳钢 | 8×4 | — | 50 | 36 | 206.5 |
| 外抗拉铠装层 | 碳钢 | 8×4 | — | 52 | −38 | 214.5 |
| 抗鸟笼带 | 凯夫拉49 | — | 0.2 | — | — | 214.9 |
| 外包覆层 | 高密度聚乙烯 | — | 7 | — | — | 228.9 |
), ArticleFig(id=1243306187400262516, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=EN, label=Tab.2, caption=
Material properties of 6" flexible pipe
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层名称 | 杨氏模量/GPa | 泊松比 | 屈服强度/MPa | 割线模量/MPa |
|---|
| 抗拉铠装层 | 207 | 0.3 | 650 | 1172.58 |
| 抗鸟笼带(横向) | 129 | 0.31 | 1310 | — |
| 抗鸟笼带(轴向) | 2.49 | — | 1310 | — |
| 外包覆层 | 0.571 | 0.45 | 20.74 | — |
), ArticleFig(id=1243306187496731515, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306169498972460, language=CN, label=表2, caption=
6英寸柔性软管材料属性
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层名称 | 杨氏模量/GPa | 泊松比 | 屈服强度/MPa | 割线模量/MPa |
|---|
| 抗拉铠装层 | 207 | 0.3 | 650 | 1172.58 |
| 抗鸟笼带(横向) | 129 | 0.31 | 1310 | — |
| 抗鸟笼带(轴向) | 2.49 | — | 1310 | — |
| 外包覆层 | 0.571 | 0.45 | 20.74 | — |
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