Article(id=1243304975112192117, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243304968753623545, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2025.02.010, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1724083200000, receivedDateStr=2024-08-20, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774356605555, onlineDateStr=2026-03-24, pubDate=1739980800000, pubDateStr=2025-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774356605555, onlineIssueDateStr=2026-03-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774356605555, creator=13701087609, updateTime=1774356605555, updator=13701087609, issue=Issue{id=1243304968753623545, tenantId=1146029695717560320, journalId=1240685776644648972, year='2025', volume='29', issue='2', pageStart='171', pageEnd='335', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1774356604040, creator=13701087609, updateTime=1774356967523, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1243306493370544137, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243304968753623545, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1243306493370544138, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243304968753623545, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=266, endPage=276, ext={EN=ArticleExt(id=1243304975414182016, articleId=1243304975112192117, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Curvature prediction model and optimization criteria for BSR in flexible pipelines, columnId=1242129251223274417, journalTitle=Journal of Ship Mechanics, columnName=Structural Mechanics, runingTitle=null, highlight=null, articleAbstract=
The Bend Stiffener (BSR) manufactured from polyurethane is generally used at the connection between nonbonded pipes and water surface platform. It is necessary to predict curvature distribution of BSR. This paper proposed a curvature prediction model that took into account the stress-strain nonlinearity of BSR and bending hysteresis of nonbonded pipes. Then, a nonlinear regression method was used to identify the Prony parameters which could be used to describe the stress relaxation behavior of BSR materials. Then the stress relaxation model was substituted into the curvature prediction model, so that the effect of BSR’s stress relaxation could be taken into considernation. Finally, an optimization criteria was proposed for BSR and conducts parameter analysis on regular shaped BSR.
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聚氨酯材料(Polyurethane)制造的弯曲刚度加强件(Bend Stiffener,BSR)一般用于非粘结管道与端部的连接处,预报该区域的曲率分布是必要的。本文首先提出一种同时计及BSR材料应力-应变非线性与非粘结管道弯曲迟滞特性的曲率预报模型;然后使用非线性回归方法,辨识用于描述BSR材料的应力松弛行为的Prony参数,并将其代入曲率预报模型,使该模型可以考虑BSR材料应力松弛的影响效果;最终,本文提出针对BSR的优化准则,并对规则形状的BSR进行参数分析。
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, authorsList=陈鲲鹏, 张萌萌, 赵冰, 李亚美, 付世晓)}, authors=[Author(id=1243886917230641859, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, orderNo=0, 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=1243886917318722246, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, authorId=1243886917230641859, language=EN, stringName=Kun-peng CHEN, firstName=Kun-peng, middleName=null, lastName=CHEN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=
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1.School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1243886917733958348, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, authorId=1243886917557797577, language=CN, stringName=张萌萌, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=上海交通大学 船舶海洋与建筑工程学院,上海 200240, bio={"content":"
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2005:531-538., articleTitle=Viscoelastic analysis of bend stiffeners, refAbstract=null)], funds=[Fund(id=1243886922452550406, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, awardId=52088102, language=CN, fundingSource=国家自然科学基金基础科学中心项目(52088102), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1243886917121589951, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, xref=1., ext=[AuthorCompanyExt(id=1243886917129978560, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, companyId=1243886917121589951, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China), AuthorCompanyExt(id=1243886917142561473, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, companyId=1243886917121589951, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=上海交通大学 船舶海洋与建筑工程学院,上海 200240)])], figs=[ArticleFig(id=1243886919650755302, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Fig.1, caption=
Shape diagram of BSR in nonbonded flexible pipe top-end region, figureFileSmall=7cswg6Pn/r64udef1rRCbA==, figureFileBig=nZOVudGD5ieVmK33yWvnug==, tableContent=null), ArticleFig(id=1243886919717864167, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=图1, caption=
非粘结管道端部BSR形状示意图[3], figureFileSmall=7cswg6Pn/r64udef1rRCbA==, figureFileBig=nZOVudGD5ieVmK33yWvnug==, tableContent=null), ArticleFig(id=1243886919822721768, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Fig.2, caption=
Stress diagram of beam element, figureFileSmall=pE9H5hPPfZwAScCc3NSENA==, figureFileBig=0trzSsNhp3hcUZrxLYM24g==, tableContent=null), ArticleFig(id=1243886919885636329, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=图2, caption=
梁微元受力示意图, figureFileSmall=pE9H5hPPfZwAScCc3NSENA==, figureFileBig=0trzSsNhp3hcUZrxLYM24g==, tableContent=null), ArticleFig(id=1243886919990493930, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Fig.3, caption=
The BSR region geometry of the verification case, figureFileSmall=sgDtB+3seGpCo/Ie12Burw==, figureFileBig=Z4UHBetamvVGBXSB4FzNUQ==, tableContent=null), ArticleFig(id=1243886920103740139, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=图3, caption=
验证算例BSR区域几何形状, figureFileSmall=sgDtB+3seGpCo/Ie12Burw==, figureFileBig=Z4UHBetamvVGBXSB4FzNUQ==, tableContent=null), ArticleFig(id=1243886920187626220, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Fig.4, caption=
Comparison between the calculation results of this paper and those in Ref.[14], figureFileSmall=+rbyccGe/6Fa8rxBPOhtuw==, figureFileBig=0MVPHYAjeWMHbIe4oPNyJg==, tableContent=null), ArticleFig(id=1243886920250540781, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=图4, caption=
本文计算结果与文献[14]结果对比, figureFileSmall=+rbyccGe/6Fa8rxBPOhtuw==, figureFileBig=0MVPHYAjeWMHbIe4oPNyJg==, tableContent=null), ArticleFig(id=1243886920326038254, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Fig.5, caption=
Flow chart of Prony series identification, figureFileSmall=nz5a06jh/lHrziOP+FU/8A==, figureFileBig=6D72hUSNVyktCUrO5G/9kw==, tableContent=null), ArticleFig(id=1243886920388952815, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=图5, caption=
Prony级数辨识流程图, figureFileSmall=nz5a06jh/lHrziOP+FU/8A==, figureFileBig=6D72hUSNVyktCUrO5G/9kw==, tableContent=null), ArticleFig(id=1243886920485421808, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Fig.6, caption=
Comparison between experimental data and fitted results, figureFileSmall=+rBgcvZNFvNkl6ubuByQJg==, figureFileBig=wao8H5ODQIR3p3wqdUdZxA==, tableContent=null), ArticleFig(id=1243886920552530673, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=图6, caption=
试验数据与本文拟合数据对比图, figureFileSmall=+rBgcvZNFvNkl6ubuByQJg==, figureFileBig=wao8H5ODQIR3p3wqdUdZxA==, tableContent=null), ArticleFig(id=1243886920619639538, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Fig.7, caption=
Diameter versus axial distance for BSR before and after adjustment, figureFileSmall=Gq1mP+QYIm3bna6cDts0FA==, figureFileBig=5akQpEJe6Vrxr6AZBoxRnA==, tableContent=null), ArticleFig(id=1243886920686748403, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=图7, caption=
调整前后的BSR线型, figureFileSmall=Gq1mP+QYIm3bna6cDts0FA==, figureFileBig=5akQpEJe6Vrxr6AZBoxRnA==, tableContent=null), ArticleFig(id=1243886920770634484, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Fig.8, caption=
Comparison of curvature distribution with and without consideration of material nonlinearity, figureFileSmall=nbpQIMzB5Q40zfncedhjGQ==, figureFileBig=aKjrOfHF1cnBswhSd9RSSg==, tableContent=null), ArticleFig(id=1243886920858714869, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=图8, caption=
是否计及材料非线性的曲率分布对比, figureFileSmall=nbpQIMzB5Q40zfncedhjGQ==, figureFileBig=aKjrOfHF1cnBswhSd9RSSg==, tableContent=null), ArticleFig(id=1243886920942600950, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Fig.9, caption=
Curvature distribution and maximum curvature-critical curvature curves under various cases, figureFileSmall=FoiWwmT7QSsjHIkSKId2NA==, figureFileBig=R2jKdhiSu0J+VRULwpC8gQ==, tableContent=null), ArticleFig(id=1243886921005515511, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=图9, caption=
不同工况下的曲率分布曲线与最大曲率-临界曲率曲线, figureFileSmall=FoiWwmT7QSsjHIkSKId2NA==, figureFileBig=R2jKdhiSu0J+VRULwpC8gQ==, tableContent=null), ArticleFig(id=1243886921072624376, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Fig.10, caption=
Definition diagram of conical BSR parameters, figureFileSmall=2gQnXwySHc7fB2GUg49n5Q==, figureFileBig=YXnRnQYHpok3ZqMMvr0iSA==, tableContent=null), ArticleFig(id=1243886921143927545, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=图10, caption=
锥形BSR参数示意图, figureFileSmall=2gQnXwySHc7fB2GUg49n5Q==, figureFileBig=YXnRnQYHpok3ZqMMvr0iSA==, tableContent=null), ArticleFig(id=1243886921223619322, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Fig.11, caption=
Curvature distributions of different BSR columns after stress relaxation limit reached, figureFileSmall=ud0x95sZPem7lBuUD2Sbdg==, figureFileBig=v7umgxStxe5zM07RMZd8bg==, tableContent=null), ArticleFig(id=1243886921294922491, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=图11, caption=
不同方案在BSR材料抵达松弛极限后的曲率分布, figureFileSmall=ud0x95sZPem7lBuUD2Sbdg==, figureFileBig=v7umgxStxe5zM07RMZd8bg==, tableContent=null), ArticleFig(id=1243886921424945916, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Tab.1, caption=
Material parameters and load information
, figureFileSmall=null, figureFileBig=null, tableContent=
| 线性杨氏模量E/MPa | 应力-应变关系多项式系数Ak/MPa | 自由端载荷F/N | 自由端载荷角度θF/° | 管道弯曲刚度EIpipe/(kN·m2) |
|---|
| A1 | A2 | A3 |
|---|
| 100 | 533.66 | 1.26×104 | 1.152×105 | 2.64×106 | 10 | 89.5×103 |
), ArticleFig(id=1243886921517220605, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=表1, caption=
材料参数与载荷信息
, figureFileSmall=null, figureFileBig=null, tableContent=
| 线性杨氏模量E/MPa | 应力-应变关系多项式系数Ak/MPa | 自由端载荷F/N | 自由端载荷角度θF/° | 管道弯曲刚度EIpipe/(kN·m2) |
|---|
| A1 | A2 | A3 |
|---|
| 100 | 533.66 | 1.26×104 | 1.152×105 | 2.64×106 | 10 | 89.5×103 |
), ArticleFig(id=1243886921643049726, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Tab.2, caption=
Prony series obtained from experimental data
, figureFileSmall=null, figureFileBig=null, tableContent=
| Prony参数 | g1 | τ1 | g2 | τ2 | g3 | τ3 |
|---|
| 数值 | 0.0323 | 6.1740×104 | 0.0114 | 8.4477×103 | 0.0210 | 1.3357×103 |
), ArticleFig(id=1243886921743713023, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=表2, caption=
根据试验数据所得Prony参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| Prony参数 | g1 | τ1 | g2 | τ2 | g3 | τ3 |
|---|
| 数值 | 0.0323 | 6.1740×104 | 0.0114 | 8.4477×103 | 0.0210 | 1.3357×103 |
), ArticleFig(id=1243886921810821888, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Tab.3, caption=
Calculation results of different DBSR, root & Lbs for conical BSR parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| κ | S2 |  |  | V | | κ | S2 |  |  | V |
|---|
| DBSR,root=0.7179 m | 1.7 | 0.53 | 1.24 | 1.96 | 0.49 | DBSR,root=0.7179 m | 2.48 | 0.74 | 1.49 | 1.88 | 0.35 |
| Lbs=1.37 m | 7 | Lbs=1.0 m |
| DBSR,root=0.5 m | 1.8 | 0.55 | 2.11 | 24.6 | 0.19 | DBSR,root=0.7179 m | 2.54 | 0.76 | 1.66 | 2.83 | 0.43 |
| Lbs=1.37 m | 4 | Lbs=1.2 m |
| DBSR,root=0.6 m | 2.5 | 0.77 | 2.21 | 11.4 | 0.31 | DBSR,root=0.7179 m | 2.97 | 0.89 | 2.05 | 5.24 | 0.53 |
| Lbs=1.37 m | 8 | Lbs=1.5 m |
| DBSR,root=0.8 m | 2.8 | 0.84 | 1.72 | 3.96 | 0.62 | DBSR,root=0.7179 m | 3.34 | 1.00 | 2.28 | 5.80 | 0.57 |
| Lbs=1.37 m | 0 | Lbs=1.6 m |
| DBSR,root=1.0 m | 2.2 | 0.68 | 1.19 | 1.53 | 1.00 | | | | | | |
| Lbs=1.37 m | 9 |
), ArticleFig(id=1243886921919873793, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=表3, caption=
锥形BSR参数变化计算结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| κ | S2 |  |  | V | | κ | S2 |  |  | V |
|---|
| DBSR,root=0.7179 m | 1.7 | 0.53 | 1.24 | 1.96 | 0.49 | DBSR,root=0.7179 m | 2.48 | 0.74 | 1.49 | 1.88 | 0.35 |
| Lbs=1.37 m | 7 | Lbs=1.0 m |
| DBSR,root=0.5 m | 1.8 | 0.55 | 2.11 | 24.6 | 0.19 | DBSR,root=0.7179 m | 2.54 | 0.76 | 1.66 | 2.83 | 0.43 |
| Lbs=1.37 m | 4 | Lbs=1.2 m |
| DBSR,root=0.6 m | 2.5 | 0.77 | 2.21 | 11.4 | 0.31 | DBSR,root=0.7179 m | 2.97 | 0.89 | 2.05 | 5.24 | 0.53 |
| Lbs=1.37 m | 8 | Lbs=1.5 m |
| DBSR,root=0.8 m | 2.8 | 0.84 | 1.72 | 3.96 | 0.62 | DBSR,root=0.7179 m | 3.34 | 1.00 | 2.28 | 5.80 | 0.57 |
| Lbs=1.37 m | 0 | Lbs=1.6 m |
| DBSR,root=1.0 m | 2.2 | 0.68 | 1.19 | 1.53 | 1.00 | | | | | | |
| Lbs=1.37 m | 9 |
), ArticleFig(id=1243886921991176962, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Tab.4, caption=
Parameters of columnar BSR designed for calculation
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案编号 | 根部外径/m | BSR长度/m |
|---|
| 1 | 0.5884 | 1 |
| 2 | 0.5520 | 1.2 |
| 3 | 0.5131 | 1.5 |
| 4 | 0.5884 | 0.8 |
| 5 | 0.5884 | 1.2 |
| 6 | 0.6500 | 1 |
| 7 | 0.7500 | 1 |
), ArticleFig(id=1243886922058285827, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=表4, caption=
柱形BSR设计参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案编号 | 根部外径/m | BSR长度/m |
|---|
| 1 | 0.5884 | 1 |
| 2 | 0.5520 | 1.2 |
| 3 | 0.5131 | 1.5 |
| 4 | 0.5884 | 0.8 |
| 5 | 0.5884 | 1.2 |
| 6 | 0.6500 | 1 |
| 7 | 0.7500 | 1 |
), ArticleFig(id=1243886922179920644, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=EN, label=Tab.5, caption=
Calculation results of columnar BSR (dimensionless parameters)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案编号 | κ | S2 |  |  | V |
|---|
| 1 | 1.01(不满足曲率要求) | 0.44 | 1.00 | 1.03 | 0.53 |
| 2 | 0.94 | 0.25 | 1.01 | 1.05 | 0.53 |
| 3 | 0.86 | 0.18 | 1.01 | 1.08 | 0.53 |
| 4 | 1.12(不满足曲率要求) | 1.00 | 1.00 | 1.01 | 0.43 |
| 5 | 0.92 | 0.20 | 1.00 | 1.07 | 0.64 |
| 6 | 0.99 | 0.41 | 1.00 | 1.10 | 0.70 |
| 7 | 0.98 | 0.38 | 1.00 | 1.03 | 1.00 |
), ArticleFig(id=1243886922272195333, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243304975112192117, language=CN, label=表5, caption=
柱形BSR计算结果(无因次参数)
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案编号 | κ | S2 |  |  | V |
|---|
| 1 | 1.01(不满足曲率要求) | 0.44 | 1.00 | 1.03 | 0.53 |
| 2 | 0.94 | 0.25 | 1.01 | 1.05 | 0.53 |
| 3 | 0.86 | 0.18 | 1.01 | 1.08 | 0.53 |
| 4 | 1.12(不满足曲率要求) | 1.00 | 1.00 | 1.01 | 0.43 |
| 5 | 0.92 | 0.20 | 1.00 | 1.07 | 0.64 |
| 6 | 0.99 | 0.41 | 1.00 | 1.10 | 0.70 |
| 7 | 0.98 | 0.38 | 1.00 | 1.03 | 1.00 |
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