Article(id=1243306066302316918, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306060832944396, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2025.03.010, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1727107200000, receivedDateStr=2024-09-24, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774356865715, onlineDateStr=2026-03-24, pubDate=1742400000000, pubDateStr=2025-03-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774356865715, onlineIssueDateStr=2026-03-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774356865715, creator=13701087609, updateTime=1774356865715, updator=13701087609, issue=Issue{id=1243306060832944396, tenantId=1146029695717560320, journalId=1240685776644648972, year='2025', volume='29', issue='3', pageStart='337', pageEnd='516', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1774356864412, creator=13701087609, updateTime=1774357001622, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1243306636396310539, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306060832944396, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1243306636396310540, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1243306060832944396, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=451, endPage=464, ext={EN=ArticleExt(id=1243306066612695428, articleId=1243306066302316918, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Collapse analysis of deepwater thick-walled pipeline by vector form intrinsic finite solid element, columnId=1242129251223274417, journalTitle=Journal of Ship Mechanics, columnName=Structural Mechanics, runingTitle=null, highlight=null, articleAbstract=
Thick-walled pipelines are widely used as transmission pipes for (ultra) deepwater petroleum and natural gas, and buckle arrestors for shallow water pipelines. However, the current international authoritative regulations may underestimate their ultimate bearing capacity significantly so that their economy and safety are hot topics in industrial circles. After deriving the calculation formula of vector form intrinsic finite element (VFIFE) method solid element, an analysis model of thick-walled pipelines considering the nonlinearity of geometry, material and boundary was established to solve the key mechanical problem of local collapse of thick-walled pipelines. And its accuracy was verified by comparison with 8 sets of thick-walled pipe scale tests, the DNV code, and ABAQUS simulations. Sensitivity analysis of diameter-to-thickness ratio, initial ovality and material yield strength were carried out to quantify the calculation errors of the DNV code method. Then, a more accurate formula for calculating the local collapse pressure of thick-walled pipes was obtained by fitting the VFIFE results. The results show that the simulation results of the VFIFE constant strain tetrahedral element are in line with the actual situation and can provide a new analysis strategy for the collapse behavior analysis of thick-walled pipelines. However, attention should be paid to determining the maximum load rate under the requirement of the quasi-static loading. Under high external pressure, the pipeline will collapse locally and propagate buckle dynamically and the deformation of the pipe section changes from an ellipse to a "dumbbell" shape with certain folds on the inner wall. During local collapse, the change trend of the stress distribution conforms to the general features of solid structure buckling instability. The calculation error of the DNV code of thick-walled pipelines’ local collapse pressure increases with the decrease of the diameter-to-thickness ratio, the decrease of the initial ovality, and the increase of the material yield strength respectively. The corrected formula for local collapse pressure calculation of thick-walled pipelines has a fitting error of -2.49%~1.72% for homologous data and a calculation error of -6.11%~1.70% for heterologous data. It can accurately calculate the local collapse pressures of deepwater pipelines with diameter-to-thickness ratio of 8~18, initial ovality of 0.5%~3.0%, and material yield strength of 300~500 MPa. The results can be used to guide the design and verification of submarine thick-walled pipelines.
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厚壁管道广泛应用于(超)深水油气输送和浅水管道止屈防护,但目前国际权威规范对其极限承载能力存在明显低估,其经济性和安全性受到了业界的高度关注。针对厚壁管道局部压溃的关键力学问题,首先推导向量式有限元(VFIFE)实体单元计算公式,建立考虑几何、材料和边界非线性的厚壁管道压溃行为分析模型。通过8组缩尺比厚壁管道压溃试验和DNV规范、ABAQUS模拟分析模型的准确性。开展径厚比、初始椭圆度和屈服强度的敏感性分析,量化DNV规范方法的计算误差,并基于VFIFE结果拟合得到更准确的厚壁管道压溃压力计算公式。研究结果表明:VFIFE常应变四面体单元模拟结果符合实际情况,可以为深水厚壁管道压溃行为分析提供一套新的分析策略,但应注意确定结构准静态加载允许的最大加载速率;在较高的外压载荷作用下,管道会发生局部压溃和动态屈曲传播,截面由椭圆形变化为内壁出现一定褶皱的“哑铃”形,应力分布的变化规律符合实体结构屈曲失稳的一般规律;DNV规范对于厚壁管道压溃压力的计算误差分别随径厚比减小、初始椭圆度减小和材料屈服强度增大而增大;厚壁管道压溃压力的修正公式同源数据拟合误差为−2.49%~1.72%,异源数据计算误差为−6.11%~1.70%,能够准确计算径厚比8~18、初始椭圆度为0.5%~3.0%和材料屈服强度为300~ 550 MPa的深水管道压溃压力。本文结果可用于指导海底厚壁管道设计和校核。
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, authorsList=李振眠, 邵强, 余杨, 余建星, 马文韬, 刘鹏飞, 田博文, 张志炜)}, authors=[Author(id=1243306082215505977, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, 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=1243306082324557889, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, authorId=1243306082215505977, language=EN, stringName=Zhen-mian LI, firstName=Zhen-mian, middleName=null, lastName=LI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
2.Tianjin Key Laboratory of Port and Ocean Engineering, Tianjin University, Tianjin 300072, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1243306082441998404, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, authorId=1243306082215505977, language=CN, stringName=李振眠, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.天津大学 水利工程仿真与安全国家重点实验室,天津 300072
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李振眠(1994-),男,博士,副研究员
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3.Pipe China Engineering Technology Innovation Co., Ltd., Tianjin 300450, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1243306082727211085, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, authorId=1243306082534273094, language=CN, stringName=邵强, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3.国家管网集团工程技术创新有限公司,天津 300450, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1243306082106454067, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, xref=3., ext=[AuthorCompanyExt(id=1243306082114842675, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, companyId=1243306082106454067, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1.State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
2.Tianjin Key Laboratory of Port and Ocean Engineering, Tianjin University, Tianjin 300072, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1243306083092115544, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, authorId=1243306082840457297, language=CN, stringName=余杨, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.天津大学 水利工程仿真与安全国家重点实验室,天津 300072
2.天津大学 天津市港口与海洋工程重点实验室,天津 300072, bio={"content":"
余杨(1988-),男,博士,教授,通讯作者,E-mail:yang.yu@tju.edu.cn。
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余杨(1988-),男,博士,教授,通讯作者,E-mail:yang.yu@tju.edu.cn。
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1.State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
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1.天津大学 水利工程仿真与安全国家重点实验室,天津 300072
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1.State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
2.Tianjin Key Laboratory of Port and Ocean Engineering, Tianjin University, Tianjin 300072, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1243306083754815594, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, authorId=1243306083528323173, language=CN, stringName=马文韬, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1.天津大学 水利工程仿真与安全国家重点实验室,天津 300072
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Elastoplastic material treatment based on stress integral regression algorithm, figureFileSmall=7kVQkkkPkQQpGyQIjgGRCg==, figureFileBig=ZhhvQ+ErJz4o+fBCH5iALg==, tableContent=null), ArticleFig(id=1243306088163029176, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=图4, caption=
基于应力积分回退算法的弹塑性材料处理, figureFileSmall=7kVQkkkPkQQpGyQIjgGRCg==, figureFileBig=ZhhvQ+ErJz4o+fBCH5iALg==, tableContent=null), ArticleFig(id=1243306088263692473, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Fig.5, caption=
A scale pressure chamber in Tianjin University[13], figureFileSmall=vJ8dLHUm7PvDKThBn4rCsA==, figureFileBig=Vg0ZeMaIHke28evIWGr4Lg==, tableContent=null), ArticleFig(id=1243306088385327290, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=图5, caption=
天津大学缩尺比深水压力舱[13], figureFileSmall=vJ8dLHUm7PvDKThBn4rCsA==, figureFileBig=Vg0ZeMaIHke28evIWGr4Lg==, tableContent=null), ArticleFig(id=1243306088460824763, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Fig.6, caption=
Experimental procedure of buckling test for thick-walled pipe samples, figureFileSmall=9+Qek2Zv27BwJ6QIwTpHLQ==, figureFileBig=d35a2c57hmJrOdT5zT9Lng==, tableContent=null), ArticleFig(id=1243306088536322236, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=图6, caption=
厚壁管道压溃试验流程, figureFileSmall=9+Qek2Zv27BwJ6QIwTpHLQ==, figureFileBig=d35a2c57hmJrOdT5zT9Lng==, tableContent=null), ArticleFig(id=1243306088603431101, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Fig.7, caption=
Diameter and ovality measurement, figureFileSmall=2yEnXYSa87CKWkb6t3M3SQ==, figureFileBig=/PD0hn/qZgfFOdFdjGrSGw==, tableContent=null), ArticleFig(id=1243306088704094398, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=图7, caption=
直径和椭圆度测量, figureFileSmall=2yEnXYSa87CKWkb6t3M3SQ==, figureFileBig=/PD0hn/qZgfFOdFdjGrSGw==, tableContent=null), ArticleFig(id=1243306088808951999, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Fig.8, caption=
Facility and results of the quasi-static tensile test, figureFileSmall=JV/+zG6blsBjDkIbTDC94w==, figureFileBig=CPLWGrUbAaBbE1WXq308PQ==, tableContent=null), ArticleFig(id=1243306088901226688, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=图8, caption=
静态拉伸测试, figureFileSmall=JV/+zG6blsBjDkIbTDC94w==, figureFileBig=CPLWGrUbAaBbE1WXq308PQ==, tableContent=null), ArticleFig(id=1243306090465702081, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Fig.9, caption=
Test of scaled pipes, figureFileSmall=F7rANdg68OnHAFY6jwdjWg==, figureFileBig=AjA5DS1jjNmc97ei1dTYCw==, tableContent=null), ArticleFig(id=1243306090557976770, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=图9, caption=
管件缩尺比实验, figureFileSmall=F7rANdg68OnHAFY6jwdjWg==, figureFileBig=AjA5DS1jjNmc97ei1dTYCw==, tableContent=null), ArticleFig(id=1243306090650251459, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Fig.10, caption=
Water pressure-time curves, figureFileSmall=s0q8X+YWE/TM4+9qzXgW9g==, figureFileBig=2I1wZpJY6F5884Wlkb7XpQ==, tableContent=null), ArticleFig(id=1243306090746720452, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=图10, caption=
舱内水压曲线, figureFileSmall=s0q8X+YWE/TM4+9qzXgW9g==, figureFileBig=2I1wZpJY6F5884Wlkb7XpQ==, tableContent=null), ArticleFig(id=1243306090818023621, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Fig.11, caption=
Convergence analysis of different mesh densities and pressure loading rates, figureFileSmall=Wcd1mnMd/5XCG9HEed5nFQ==, figureFileBig=wBJVJU8d11ifEa+5mnu9tg==, tableContent=null), ArticleFig(id=1243306090889326790, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=图11, caption=
网格和加载速率收敛性分析, figureFileSmall=Wcd1mnMd/5XCG9HEed5nFQ==, figureFileBig=wBJVJU8d11ifEa+5mnu9tg==, tableContent=null), ArticleFig(id=1243306090985795783, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Fig.12, caption=
Deformation and von Mises stress distribution of thick wall pipe sample R1, figureFileSmall=OXGtalZDG/kSsTECmEy6lw==, figureFileBig=ltivfIUeMlmg0qiVPn88Sw==, tableContent=null), ArticleFig(id=1243306091061293256, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=图12, caption=
厚壁管道r1的von Mises应力分布和变形., figureFileSmall=OXGtalZDG/kSsTECmEy6lw==, figureFileBig=ltivfIUeMlmg0qiVPn88Sw==, tableContent=null), ArticleFig(id=1243306091140985033, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Fig.13, caption=
Parameter sensitivity analysis of pipeline collapse pressure, figureFileSmall=ejC5St6gI1N15Vn6rIPVUQ==, figureFileBig=YM4zobI7K/G0SofUU0TbUQ==, tableContent=null), ArticleFig(id=1243306091220676810, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=图13, caption=
厚壁管压溃压力的参数敏感性分析, figureFileSmall=ejC5St6gI1N15Vn6rIPVUQ==, figureFileBig=YM4zobI7K/G0SofUU0TbUQ==, tableContent=null), ArticleFig(id=1243306091296174283, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Fig.14, caption=
Accuracy analysis of the modified formula, figureFileSmall=fxLEOhFBR02/2Nmf3gL2gA==, figureFileBig=G7X6Ql4/7OO23pKejy6Tlw==, tableContent=null), ArticleFig(id=1243306091371671756, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=图14, caption=
修正公式的精度分析, figureFileSmall=fxLEOhFBR02/2Nmf3gL2gA==, figureFileBig=G7X6Ql4/7OO23pKejy6Tlw==, tableContent=null), ArticleFig(id=1243306091434586317, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Tab.1, caption=
Geometric and material parameters of pipe samples
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | D/mm | t/mm | ∆0/% | E/GPa | μ | AC-S/MPa | BC-S/MPa | nC-S |
|---|
| R1 | 75.82 | 6.31 | 0.66 | | | | | |
| R2 | 76.04 | 6.32 | 0.62 | 193 | 0.3 | 257.22 | 563.60 | 0.44 |
| R3 | 75.70 | 5.97 | 0.47 |
| R4 | 75.70 | 6.00 | 0.55 | | | | | |
| R5 | 51.50 | 3.15 | 0.35 | | | | | |
| R6 | 51.50 | 3.15 | 0.56 | 193 | 0.3 | 348.05 | 692.80 | 0.44 |
| R7 | 51.50 | 3.15 | 0.61 |
| R8 | 51.00 | 3.10 | 0.68 | | | | | |
), ArticleFig(id=1243306091501695182, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=表1, caption=
试验管件的几何参数和材料参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | D/mm | t/mm | ∆0/% | E/GPa | μ | AC-S/MPa | BC-S/MPa | nC-S |
|---|
| R1 | 75.82 | 6.31 | 0.66 | | | | | |
| R2 | 76.04 | 6.32 | 0.62 | 193 | 0.3 | 257.22 | 563.60 | 0.44 |
| R3 | 75.70 | 5.97 | 0.47 |
| R4 | 75.70 | 6.00 | 0.55 | | | | | |
| R5 | 51.50 | 3.15 | 0.35 | | | | | |
| R6 | 51.50 | 3.15 | 0.56 | 193 | 0.3 | 348.05 | 692.80 | 0.44 |
| R7 | 51.50 | 3.15 | 0.61 |
| R8 | 51.00 | 3.10 | 0.68 | | | | | |
), ArticleFig(id=1243306091593969871, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Tab.2, caption=
Comparison between VFIFE and other methods of collapse pressure results
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | D/t | pcVFIFE(MPa) | 压溃试验 | ABAQUS | DNV |
|---|
| pcTest(MPa) | 误差(%) | pcFEM(MPa) | 误差(%) | pcDNV(MPa) | 误差(%) |
|---|
| R1 | 12.02 | 51.60 | 50.96 | 1.26 | 49.87 | 3.47 | 40.82 | 26.41 |
| R2 | 12.03 | 52.20 | 51.27 | 1.81 | 49.95 | 4.50 | 40.88 | 27.69 |
| R3 | 12.68 | 49.62 | 48.53 | 2.25 | 47.28 | 4.95 | 39.11 | 26.87 |
| R4 | 12.62 | 49.54 | 48.66 | 1.81 | 47.25 | 4.85 | 39.08 | 26.77 |
| R5 | 16.35 | 46.14 | 46.33 | −0.41 | 44.48 | 3.73 | 40.54 | 13.81 |
| R6 | 16.35 | 44.58 | 44.49 | 0.20 | 42.87 | 3.99 | 39.42 | 13.09 |
| R7 | 16.35 | 44.12 | 44.76 | −1.43 | 42.49 | 3.84 | 39.17 | 12.64 |
| R8 | 16.45 | 43.75 | 46.51 | −5.93 | 41.99 | 4.19 | 38.52 | 13.58 |
), ArticleFig(id=1243306091690438864, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=表2, caption=
VFIFE计算结果同其他方法结果的比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | D/t | pcVFIFE(MPa) | 压溃试验 | ABAQUS | DNV |
|---|
| pcTest(MPa) | 误差(%) | pcFEM(MPa) | 误差(%) | pcDNV(MPa) | 误差(%) |
|---|
| R1 | 12.02 | 51.60 | 50.96 | 1.26 | 49.87 | 3.47 | 40.82 | 26.41 |
| R2 | 12.03 | 52.20 | 51.27 | 1.81 | 49.95 | 4.50 | 40.88 | 27.69 |
| R3 | 12.68 | 49.62 | 48.53 | 2.25 | 47.28 | 4.95 | 39.11 | 26.87 |
| R4 | 12.62 | 49.54 | 48.66 | 1.81 | 47.25 | 4.85 | 39.08 | 26.77 |
| R5 | 16.35 | 46.14 | 46.33 | −0.41 | 44.48 | 3.73 | 40.54 | 13.81 |
| R6 | 16.35 | 44.58 | 44.49 | 0.20 | 42.87 | 3.99 | 39.42 | 13.09 |
| R7 | 16.35 | 44.12 | 44.76 | −1.43 | 42.49 | 3.84 | 39.17 | 12.64 |
| R8 | 16.45 | 43.75 | 46.51 | −5.93 | 41.99 | 4.19 | 38.52 | 13.58 |
), ArticleFig(id=1243306091778519249, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=EN, label=Tab.3, caption=
Parameters in empirical equation of thick pipeline
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | a1 | a2 | a3 | a4 |
|---|
| 数值 | 1.9362 | -0.2358 | -0.0460 | -0.0147 |
), ArticleFig(id=1243306091870793938, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1243306066302316918, language=CN, label=表3, caption=
厚壁管道压溃压力修正公式的参数值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | a1 | a2 | a3 | a4 |
|---|
| 数值 | 1.9362 | -0.2358 | -0.0460 | -0.0147 |
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