Article(id=1242150815385854001, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1242150809505444351, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1007-7294.2024.05.010, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1700323200000, receivedDateStr=2023-11-19, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1774081432434, onlineDateStr=2026-03-21, pubDate=1716134400000, pubDateStr=2024-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774081432434, onlineIssueDateStr=2026-03-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774081432434, creator=13701087609, updateTime=1774081432434, updator=13701087609, issue=Issue{id=1242150809505444351, tenantId=1146029695717560320, journalId=1240685776644648972, year='2024', volume='28', issue='5', pageStart='637', pageEnd='802', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1774081431031, creator=13701087609, updateTime=1774081700138, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1242151938268143729, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1242150809505444351, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1242151938272338034, tenantId=1146029695717560320, journalId=1240685776644648972, issueId=1242150809505444351, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=735, endPage=747, ext={EN=ArticleExt(id=1242150815641706551, articleId=1242150815385854001, tenantId=1146029695717560320, journalId=1240685776644648972, language=EN, title=Application of springback ratio matrix and springback ratio feature value in springback description and compensation of double-curved plate forming, columnId=1242129251223274417, journalTitle=Journal of Ship Mechanics, columnName=Structural Mechanics, runingTitle=null, highlight=null, articleAbstract=
Springback compensation is the main difficulty in the forming of double-curved hull plates by reconfigurable mold. In this paper, springback ratio matrix and springback ratio feature value were proposed by referring to the expression of springback ratio of single-curved plate. Springback ratio matrix describes the springback value of local point of plate while springback ratio feature value describes the whole plate. The conclusion of springback of single-curved plate using springback ratio matrix and springback ratio feature value was consistent with that of the literatures. The forming experiments were conducted and the springback results were described by springback ratio matrix and springback ratio feature value. The results show that springback of saddle-type plates is less than that of sail-type plates when the radii of curvature in both directions are equal, and the springback ratio results based on elastic-plastic theory agree with those of the experiments. A new springback compensation algorithm based on springback ratio matrix was proposed. It is concluded that the springback compensation algorithm based on springback ratio matrix has a better compensation effect.
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回弹补偿是活络方形压头可重构模具成形船体双曲度外板时遇到的主要难题。本文参考单曲度板回弹比表达方法,引入针对双曲度板材描述离散点以及整体回弹大小的回弹比矩阵及回弹比特征量,并对文献中单曲度板的回弹数据进行了描述,得到的结论与文献一致。同时对典型双曲度板进行了冲压成形实验,并采用本文提出的回弹比矩阵及回弹比特征量对回弹数据进行描述。结果表明:在双向曲率半径分别相等时,马鞍形板的回弹显著小于帆形板;弹塑性理论推导出的回弹比结果与实验数据的回弹比结果相一致。基于回弹比矩阵,本文提出了一种新的回弹补偿算法,通过对比发现基于回弹比矩阵的补偿算法的补偿效果更好。
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, authorsList=施凤燕, 赵涵, 胡勇, 黄朝炎)}, authors=[Author(id=1242150834394440383, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, 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=1242150834495103686, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, authorId=1242150834394440383, language=EN, stringName=Feng-yan SHI, firstName=Feng-yan, middleName=null, lastName=SHI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1a.Key Laboratory of High Performance of Ship Technology of Ministry of Education, Wuhan University of Technology, Wuhan 430063, China
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1a.武汉理工大学 教育部船舶技术高性能重点实验室,武汉 430063
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施凤燕(1990-),女,博士研究生,助理研究员
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施凤燕(1990-),女,博士研究生,助理研究员
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2.School of Civil Engineering, Central South University, Changsha 410075, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1242150836286071517, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, authorId=1242150834700624594, language=CN, stringName=赵涵, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2.中南大学 土木工程学院,长沙 410075, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1242150834281194169, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, xref=2., ext=[AuthorCompanyExt(id=1242150834289582776, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, companyId=1242150834281194169, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1a.Key Laboratory of High Performance of Ship Technology of Ministry of Education, Wuhan University of Technology, Wuhan 430063, China
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1a.武汉理工大学 教育部船舶技术高性能重点实验室,武汉 430063
1b.武汉理工大学 船海与能源动力工程学院,武汉 430063, bio={"content":"
胡勇(1965-),男,博士,教授,通讯作者,E-mail:y.hu@163.com。
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胡勇(1965-),男,博士,教授,通讯作者,E-mail:y.hu@163.com。
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1a.Key Laboratory of High Performance of Ship Technology of Ministry of Education, Wuhan University of Technology, Wuhan 430063, China
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1a.武汉理工大学 教育部船舶技术高性能重点实验室,武汉 430063
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Curvature distribution and variation of discrete points before and after springback of double-curved plate, figureFileSmall=r9Q0y4ECFp/xRmCg3/fPQw==, figureFileBig=TwOpYj26yMlxPIQQo+4Y5A==, tableContent=null), ArticleFig(id=1242150837791826740, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=图1, caption=
双曲度板材回弹前后离散点曲率分布和变化, figureFileSmall=r9Q0y4ECFp/xRmCg3/fPQw==, figureFileBig=TwOpYj26yMlxPIQQo+4Y5A==, tableContent=null), ArticleFig(id=1242150837980570430, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Fig.2, caption=
Variation of springback ratio feature value of single-curved plate forming, figureFileSmall=c+RAdCUXSv6J8gyMxMBnUg==, figureFileBig=vP3OIle7CCotVXmywH4cyg==, tableContent=null), ArticleFig(id=1242150838060262209, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=图2, caption=
单曲度板冲压回弹比变化规律图, figureFileSmall=c+RAdCUXSv6J8gyMxMBnUg==, figureFileBig=vP3OIle7CCotVXmywH4cyg==, tableContent=null), ArticleFig(id=1242150838144148293, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Fig.3, caption=
SKWB-2000 three-dimensional CNC ship hull plate bending machine, figureFileSmall=xjhR6xEBQYlVc7I9y3+Utw==, figureFileBig=cuE8h0P4My8z83ClBDglsg==, tableContent=null), ArticleFig(id=1242150838236422987, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=图3, caption=
SKWB-2000型船舶三维数控弯板机, figureFileSmall=xjhR6xEBQYlVc7I9y3+Utw==, figureFileBig=cuE8h0P4My8z83ClBDglsg==, tableContent=null), ArticleFig(id=1242150838349669197, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Fig.4, caption=
Schematic diagram of grids and punches position, figureFileSmall=O1Kps52Z+M0YPHYLDhDSdA==, figureFileBig=NLC2N0YzBvL1be+rt5+vHg==, tableContent=null), ArticleFig(id=1242150838416778065, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=图4, caption=
网格划分及压头位置示意图, figureFileSmall=O1Kps52Z+M0YPHYLDhDSdA==, figureFileBig=NLC2N0YzBvL1be+rt5+vHg==, tableContent=null), ArticleFig(id=1242150838496469845, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Fig.5, caption=
Actual grid diagram, figureFileSmall=yXNzy0NNlOvFzm7mdWvtTg==, figureFileBig=zpTU0q0VpCIqcDMVTHopmA==, tableContent=null), ArticleFig(id=1242150838580355930, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=图5, caption=
实际网格划分图, figureFileSmall=yXNzy0NNlOvFzm7mdWvtTg==, figureFileBig=zpTU0q0VpCIqcDMVTHopmA==, tableContent=null), ArticleFig(id=1242150838664242014, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Fig.6, caption=
Stamping forming of saddle plate, figureFileSmall=sp7i7uUYhZkbJGqN0HMoTA==, figureFileBig=ChOMvr9uLuEZlm815DP7Rg==, tableContent=null), ArticleFig(id=1242150838743933794, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=图6, caption=
马鞍形板冲压成形, figureFileSmall=sp7i7uUYhZkbJGqN0HMoTA==, figureFileBig=ChOMvr9uLuEZlm815DP7Rg==, tableContent=null), ArticleFig(id=1242150838832014182, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Fig.7, caption=
Measuring data by 3D laser scanner, figureFileSmall=4KtvApw3UTboznAsSCd7Gg==, figureFileBig=AsW2SoH5JJGpWe+dK+HYbA==, tableContent=null), ArticleFig(id=1242150838907511657, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=图7, caption=
三维激光扫描仪测量数据, figureFileSmall=4KtvApw3UTboznAsSCd7Gg==, figureFileBig=AsW2SoH5JJGpWe+dK+HYbA==, tableContent=null), ArticleFig(id=1242150838983009132, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Fig.8, caption=
Schematic diagram of the x-coordinate algorithm of a fitting point when reconstructing a surface, figureFileSmall=ZFW3v058h6PxpJc0RSpjxw==, figureFileBig=PcyczsLlhX1hGO9wOFZFAA==, tableContent=null), ArticleFig(id=1242150839075283824, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=图8, caption=
重构曲面时拟合点横坐标算法示意图, figureFileSmall=ZFW3v058h6PxpJc0RSpjxw==, figureFileBig=PcyczsLlhX1hGO9wOFZFAA==, tableContent=null), ArticleFig(id=1242150839184335732, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Fig.9, caption=
Comparison between two compensation surfaces of 2# sail plate, figureFileSmall=qNUWjDyT8C/oGn7JmtG2yQ==, figureFileBig=lrW6/dREquRV8khpSnp8+g==, tableContent=null), ArticleFig(id=1242150840266466170, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=图9, caption=
2#帆形板两种补偿曲面对比图, figureFileSmall=qNUWjDyT8C/oGn7JmtG2yQ==, figureFileBig=lrW6/dREquRV8khpSnp8+g==, tableContent=null), ArticleFig(id=1242150840358740862, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Tab.1, caption=
Springback results of single-curved plate forming
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 板材编号 | R1000 | R1250 | R1500 |
|---|
| T12A | T10A | T8A | T12A | T10A | T8A | T12A | T10A | T8A |
|---|
| 板条梁长度方向离散点位置(mm) | -300 | 0.900 | 0.359 | 0.279 | 0.456 | 0.523 | 0.095 | 0.660 | 0.265 | 0.250 |
| -240 | 0.442 | 0.937 | 0.599 | 0.887 | 0.435 | 0.737 | 0.234 | 0.485 | 0.339 |
| -180 | 0.474 | 0.311 | 0.748 | 0.641 | 0.737 | 0.613 | 0.493 | 0.320 | 0.270 |
| -120 | 0.719 | 0.613 | 0.217 | 0.749 | 0.421 | 0.149 | 0.520 | 0.587 | 0.274 |
| -60 | 0.832 | 0.827 | 0.473 | 0.062 | 0.501 | 0.344 | 0.902 | 0.507 | 0.370 |
| 0 | 0.445 | 0.228 | 0.556 | 0.979 | 0.278 | 0.556 | 0.008 | 0.158 | 0.008 |
| 60 | 0.832 | 0.827 | 0.473 | 0.062 | 0.501 | 0.344 | 0.902 | 0.507 | 0.370 |
| 120 | 0.719 | 0.613 | 0.217 | 0.749 | 0.421 | 0.149 | 0.520 | 0.587 | 0.274 |
| 180 | 0.474 | 0.311 | 0.748 | 0.641 | 0.737 | 0.613 | 0.493 | 0.320 | 0.270 |
| 240 | 0.442 | 0.937 | 0.599 | 0.887 | 0.435 | 0.747 | 0.234 | 0.485 | 0.339 |
| 300 | 0.900 | 0.359 | 0.279 | 0.456 | 0.523 | 0.075 | 0.660 | 0.265 | 0.250 |
| 特征量ηt | 0.653 | 0.575 | 0.472 | 0.597 | 0.501 | 0.402 | 0.512 | 0.408 | 0.274 |
| 文献回弹比ηₒ | 0.649 | 0.583 | 0.478 | 0.561 | 0.481 | 0.367 | 0.481 | 0.389 | 0.264 |
), ArticleFig(id=1242150840438432641, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=表1, caption=
单曲度板成形回弹
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 板材编号 | R1000 | R1250 | R1500 |
|---|
| T12A | T10A | T8A | T12A | T10A | T8A | T12A | T10A | T8A |
|---|
| 板条梁长度方向离散点位置(mm) | -300 | 0.900 | 0.359 | 0.279 | 0.456 | 0.523 | 0.095 | 0.660 | 0.265 | 0.250 |
| -240 | 0.442 | 0.937 | 0.599 | 0.887 | 0.435 | 0.737 | 0.234 | 0.485 | 0.339 |
| -180 | 0.474 | 0.311 | 0.748 | 0.641 | 0.737 | 0.613 | 0.493 | 0.320 | 0.270 |
| -120 | 0.719 | 0.613 | 0.217 | 0.749 | 0.421 | 0.149 | 0.520 | 0.587 | 0.274 |
| -60 | 0.832 | 0.827 | 0.473 | 0.062 | 0.501 | 0.344 | 0.902 | 0.507 | 0.370 |
| 0 | 0.445 | 0.228 | 0.556 | 0.979 | 0.278 | 0.556 | 0.008 | 0.158 | 0.008 |
| 60 | 0.832 | 0.827 | 0.473 | 0.062 | 0.501 | 0.344 | 0.902 | 0.507 | 0.370 |
| 120 | 0.719 | 0.613 | 0.217 | 0.749 | 0.421 | 0.149 | 0.520 | 0.587 | 0.274 |
| 180 | 0.474 | 0.311 | 0.748 | 0.641 | 0.737 | 0.613 | 0.493 | 0.320 | 0.270 |
| 240 | 0.442 | 0.937 | 0.599 | 0.887 | 0.435 | 0.747 | 0.234 | 0.485 | 0.339 |
| 300 | 0.900 | 0.359 | 0.279 | 0.456 | 0.523 | 0.075 | 0.660 | 0.265 | 0.250 |
| 特征量ηt | 0.653 | 0.575 | 0.472 | 0.597 | 0.501 | 0.402 | 0.512 | 0.408 | 0.274 |
| 文献回弹比ηₒ | 0.649 | 0.583 | 0.478 | 0.561 | 0.481 | 0.367 | 0.481 | 0.389 | 0.264 |
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Equipment parameters of SKWB-2000 CNC ship hull plate bending machine
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| 最大弯板厚度/mm | 压头尺寸/mm | 上压头数量 | 下压头数量 | 单个压头压力/kN |
|---|
| 40 | 100×100 | 20×20 | 21×21 | 20 |
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SKWB-2000型船舶三维数控弯板机设备参数
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| 最大弯板厚度/mm | 压头尺寸/mm | 上压头数量 | 下压头数量 | 单个压头压力/kN |
|---|
| 40 | 100×100 | 20×20 | 21×21 | 20 |
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Mechanical properties in the experiments
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| 材料 | 密度/(kg·m-3) | 杨氏模量/GPa | 泊松比 | 屈服应力/MPa | 抗拉强度/MPa | 伸长率(%) |
|---|
| Invar钢 | 8410 | 123 | 0.25 | 241 | 440 | 40 |
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实验材料参数
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| 材料 | 密度/(kg·m-3) | 杨氏模量/GPa | 泊松比 | 屈服应力/MPa | 抗拉强度/MPa | 伸长率(%) |
|---|
| Invar钢 | 8410 | 123 | 0.25 | 241 | 440 | 40 |
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Relevant parameters of surface equations
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| 序号 | a | b | c/mm | d/mm | 双向曲率半径 |
|---|
| ρx/mm | ρy/mm |
|---|
| 帆形板 | 1 | 1 | 1 | 1200 | | 1200 | 1200 |
| 2 | 1 | 1 | 1500 | | 1500 | 1500 |
| 3 | 1 | 1 | 1800 | | 1800 | 1800 |
| 4 | 1 |  | 1200 | | 1200 | 2400 |
| 5 | 1 |  | 1000 | | 1000 | 2000 |
| 6 | 1 |  | 800 | | 800 | 1600 |
| 马鞍形板 | 7 | 1 | 1 | 2400 | 1200 | 1200 | -1200 |
| 8 | 1 | 1 | 3000 | 1500 | 1500 | -1500 |
| 9 | 1 | 1 | 3600 | 1800 | 1800 | -1800 |
| 10 | 1 | 1 | 3600 | 1200 | 1200 | -2400 |
| 11 | 1 | 1 | 3000 | 1000 | 1000 | -2000 |
| 12 | 1 | 1 | 2400 | 800 | 800 | -1600 |
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曲面方程相关参数
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| 序号 | a | b | c/mm | d/mm | 双向曲率半径 |
|---|
| ρx/mm | ρy/mm |
|---|
| 帆形板 | 1 | 1 | 1 | 1200 | | 1200 | 1200 |
| 2 | 1 | 1 | 1500 | | 1500 | 1500 |
| 3 | 1 | 1 | 1800 | | 1800 | 1800 |
| 4 | 1 |  | 1200 | | 1200 | 2400 |
| 5 | 1 |  | 1000 | | 1000 | 2000 |
| 6 | 1 |  | 800 | | 800 | 1600 |
| 马鞍形板 | 7 | 1 | 1 | 2400 | 1200 | 1200 | -1200 |
| 8 | 1 | 1 | 3000 | 1500 | 1500 | -1500 |
| 9 | 1 | 1 | 3600 | 1800 | 1800 | -1800 |
| 10 | 1 | 1 | 3600 | 1200 | 1200 | -2400 |
| 11 | 1 | 1 | 3000 | 1000 | 1000 | -2000 |
| 12 | 1 | 1 | 2400 | 800 | 800 | -1600 |
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Springback ratio matrix of 2# sail-type plate in the x-direction
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| y/mm | x/mm |
|---|
| -300 | -200 | -100 | 0 | 100 | 200 | 300 |
|---|
| -300 | 0.162 | 0.400 | 0.614 | 0.676 | 0.602 | 0.398 | 0.191 |
| -200 | 0.177 | 0.358 | 0.482 | 0.502 | 0.470 | 0.340 | 0.183 |
| -100 | 0.183 | 0.334 | 0.398 | 0.391 | 0.378 | 0.300 | 0.170 |
| 0 | 0.186 | 0.333 | 0.372 | 0.354 | 0.361 | 0.305 | 0.169 |
| 100 | 0.193 | 0.340 | 0.396 | 0.395 | 0.408 | 0.343 | 0.192 |
| 200 | 0.212 | 0.374 | 0.473 | 0.490 | 0.484 | 0.377 | 0.194 |
| 300 | 0.232 | 0.459 | 0.604 | 0.623 | 0.577 | 0.404 | 0.193 |
), ArticleFig(id=1242150840992080790, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=表5, caption=
2#帆形板在x方向上回弹比矩阵
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| y/mm | x/mm |
|---|
| -300 | -200 | -100 | 0 | 100 | 200 | 300 |
|---|
| -300 | 0.162 | 0.400 | 0.614 | 0.676 | 0.602 | 0.398 | 0.191 |
| -200 | 0.177 | 0.358 | 0.482 | 0.502 | 0.470 | 0.340 | 0.183 |
| -100 | 0.183 | 0.334 | 0.398 | 0.391 | 0.378 | 0.300 | 0.170 |
| 0 | 0.186 | 0.333 | 0.372 | 0.354 | 0.361 | 0.305 | 0.169 |
| 100 | 0.193 | 0.340 | 0.396 | 0.395 | 0.408 | 0.343 | 0.192 |
| 200 | 0.212 | 0.374 | 0.473 | 0.490 | 0.484 | 0.377 | 0.194 |
| 300 | 0.232 | 0.459 | 0.604 | 0.623 | 0.577 | 0.404 | 0.193 |
), ArticleFig(id=1242150841109521303, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Tab.6, caption=
Springback ratio matrix of 2# sail-type plate in the y-direction
, figureFileSmall=null, figureFileBig=null, tableContent=
| y/mm | x/mm |
|---|
| -300 | -200 | -100 | 0 | 100 | 200 | 300 |
|---|
| -300 | 0.176 | 0.138 | 0.110 | 0.103 | 0.119 | 0.153 | 0.183 |
| -200 | 0.421 | 0.333 | 0.263 | 0.243 | 0.289 | 0.376 | 0.479 |
| -100 | 0.686 | 0.582 | 0.499 | 0.473 | 0.523 | 0.646 | 0.811 |
| 0 | 0.819 | 0.728 | 0.640 | 0.601 | 0.639 | 0.738 | 0.866 |
| 100 | 0.710 | 0.593 | 0.500 | 0.460 | 0.473 | 0.516 | 0.553 |
| 200 | 0.481 | 0.335 | 0.238 | 0.197 | 0.196 | 0.217 | 0.231 |
| 300 | 0.259 | 0.157 | 0.083 | 0.048 | 0.039 | 0.049 | 0.078 |
), ArticleFig(id=1242150841176630169, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=表6, caption=
2#帆形板在y方向上回弹比矩阵
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| y/mm | x/mm |
|---|
| -300 | -200 | -100 | 0 | 100 | 200 | 300 |
|---|
| -300 | 0.176 | 0.138 | 0.110 | 0.103 | 0.119 | 0.153 | 0.183 |
| -200 | 0.421 | 0.333 | 0.263 | 0.243 | 0.289 | 0.376 | 0.479 |
| -100 | 0.686 | 0.582 | 0.499 | 0.473 | 0.523 | 0.646 | 0.811 |
| 0 | 0.819 | 0.728 | 0.640 | 0.601 | 0.639 | 0.738 | 0.866 |
| 100 | 0.710 | 0.593 | 0.500 | 0.460 | 0.473 | 0.516 | 0.553 |
| 200 | 0.481 | 0.335 | 0.238 | 0.197 | 0.196 | 0.217 | 0.231 |
| 300 | 0.259 | 0.157 | 0.083 | 0.048 | 0.039 | 0.049 | 0.078 |
), ArticleFig(id=1242150841256321947, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Tab.7, caption=
Springback description when bi-directional curvature is identical
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| 序号 | 双向曲率半径 | 回弹比均值 | 回弹比特征量ηt |
|---|
| ρx/mm | ρy/mm |  |  |
|---|
| 帆形 | 1 | 1200 | 1200 | 0.403 | 0.421 | 0.412 |
| 2 | 1500 | 1500 | 0.362 | 0.389 | 0.376 |
| 3 | 1800 | 1800 | 0.322 | 0.334 | 0.328 |
| 马鞍形 | 7 | 1200 | -1200 | 0.820 | 0.583 | 0.702 |
| 8 | 1500 | -1500 | 0.683 | 0.459 | 0.571 |
| 9 | 1800 | -1800 | 0.580 | 0.424 | 0.502 |
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双向曲率相同时的实验结果回弹描述
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| 序号 | 双向曲率半径 | 回弹比均值 | 回弹比特征量ηt |
|---|
| ρx/mm | ρy/mm |  |  |
|---|
| 帆形 | 1 | 1200 | 1200 | 0.403 | 0.421 | 0.412 |
| 2 | 1500 | 1500 | 0.362 | 0.389 | 0.376 |
| 3 | 1800 | 1800 | 0.322 | 0.334 | 0.328 |
| 马鞍形 | 7 | 1200 | -1200 | 0.820 | 0.583 | 0.702 |
| 8 | 1500 | -1500 | 0.683 | 0.459 | 0.571 |
| 9 | 1800 | -1800 | 0.580 | 0.424 | 0.502 |
), ArticleFig(id=1242150841419899807, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Tab.8, caption=
Springback description when bi-directional curvature is different
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| 序号 | 双向曲率半径 | 回弹比均值 | 回弹比特征量ηt |
|---|
| ρx/mm | ρy/mm |  |  |
|---|
| 帆形 | 4 | 1200 | 2400 | 0.443 | 0.254 | 0.380 |
| 5 | 1000 | 2000 | 0.458 | 0.262 | 0.393 |
| 6 | 800 | 1600 | 0.514 | 0.356 | 0.461 |
| 马鞍形 | 10 | 1200 | -2400 | 0.736 | 0.660 | 0.711 |
| 11 | 1000 | -2000 | 0.752 | 0.668 | 0.724 |
| 12 | 800 | -1600 | 0.794 | 0.556 | 0.715 |
), ArticleFig(id=1242150841503785889, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=表8, caption=
双向曲率不同时的实验结果回弹描述
, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 双向曲率半径 | 回弹比均值 | 回弹比特征量ηt |
|---|
| ρx/mm | ρy/mm |  |  |
|---|
| 帆形 | 4 | 1200 | 2400 | 0.443 | 0.254 | 0.380 |
| 5 | 1000 | 2000 | 0.458 | 0.262 | 0.393 |
| 6 | 800 | 1600 | 0.514 | 0.356 | 0.461 |
| 马鞍形 | 10 | 1200 | -2400 | 0.736 | 0.660 | 0.711 |
| 11 | 1000 | -2000 | 0.752 | 0.668 | 0.724 |
| 12 | 800 | -1600 | 0.794 | 0.556 | 0.715 |
), ArticleFig(id=1242150841562506146, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=EN, label=Tab.9, caption=
Error comparison of once stamping finite element simulation results with two springback compensation algorithms
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| 序号 | 基于回弹比矩阵的回弹补偿方法 | Cai的方法 |
|---|
| Emean/mm | Emax/mm | Emean/mm | Emax/mm |
|---|
| 帆形 | 1 | 9.1 | 20.4 | 14.7 | 32.7 |
| 2 | 8.4 | 19.4 | 13.2 | 31.1 |
| 3 | 7.4 | 18.6 | 11.9 | 29.75 |
| 马鞍形 | 7 | 8.3 | 16.5 | 13.0 | 27.6 |
| 8 | 6.9 | 12.9 | 11.1 | 20.6 |
| 9 | 5.6 | 10.6 | 8.8 | 16.8 |
), ArticleFig(id=1242150841650586532, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1242150815385854001, language=CN, label=表9, caption=
两种回弹补偿算法下板材一次冲压有限元仿真结果误差对比
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| 序号 | 基于回弹比矩阵的回弹补偿方法 | Cai的方法 |
|---|
| Emean/mm | Emax/mm | Emean/mm | Emax/mm |
|---|
| 帆形 | 1 | 9.1 | 20.4 | 14.7 | 32.7 |
| 2 | 8.4 | 19.4 | 13.2 | 31.1 |
| 3 | 7.4 | 18.6 | 11.9 | 29.75 |
| 马鞍形 | 7 | 8.3 | 16.5 | 13.0 | 27.6 |
| 8 | 6.9 | 12.9 | 11.1 | 20.6 |
| 9 | 5.6 | 10.6 | 8.8 | 16.8 |
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