Article(id=1241049264147722351, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241049258309251153, articleNumber=null, orderNo=null, doi=10.16579/j.issn.1001.9669.2025.06.008, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1695657600000, receivedDateStr=2023-09-26, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1773818802153, onlineDateStr=2026-03-18, pubDate=1749916800000, pubDateStr=2025-06-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773818802153, onlineIssueDateStr=2026-03-18, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773818802153, creator=13701087609, updateTime=1773818802153, updator=13701087609, issue=Issue{id=1241049258309251153, tenantId=1146029695717560320, journalId=1227999626482147330, year='2025', volume='47', issue='6', pageStart='1', pageEnd='158', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1773818800761, creator=13701087609, updateTime=1773819014967, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1241050156821434987, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241049258309251153, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1241050156821434988, tenantId=1146029695717560320, journalId=1227999626482147330, issueId=1241049258309251153, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=66, endPage=71, ext={EN=ArticleExt(id=1241049264546181238, articleId=1241049264147722351, tenantId=1146029695717560320, journalId=1227999626482147330, language=EN, title=Research on free vibration characteristics of thin plate structures based on improved Fourier series, columnId=1228282191914926752, journalTitle=Journal of Mechanical Strength, columnName=Vibration·Noise·Monitoring·Diagnosis, runingTitle=null, highlight=null, articleAbstract=
Aiming at the problem of structural vibration modeling and characteristic analysis of rectangular sheets under arbitrary boundary conditions, an improved Fourier series method was proposed.Based on the Rayleigh-Ritz method, the allowable function of vibration displacement of thin plates was expressed as a linear combination of double Fourier cosine series function and auxiliary series function, which effectively avoided the possible discontinuities or singularities of the traditional Fourier series at the boundary. Firstly, the variational equation of the sheet vibration model was established by using the Hamilton energy variational principle, and the energy expressions in the equation were calculated and the displacement tolerance function was brought in. Secondly, the variational solution of the unknown Fourier coefficient was carried out to obtain the matrix equation of the model. The matrix equation was solved by numerical calculation method to obtain the free vibration frequency and eigenvector of the thin plate. Finally, the classical boundary conditions and elastic boundary conditions were used as examples to calculate and analyze. The calculation efficiency and accuracy of the proposed method were verified by comparison with the results of finite element simulation and existing literature. Additionally, the influence of the aspect ratio and constrained the spring stiffness coefficient on the vibration characteristics of the thin plate was discussed.
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针对在任意边界条件下矩形薄板的结构振动建模和特性分析问题,提出了一种改进的傅里叶级数法。基于Rayleigh-Ritz法,将薄板振动位移容许函数表示为双傅里叶余弦级数函数和辅助级数函数的线性组合,有效避免了传统傅里叶级数在边界处可能存在的不连续或奇异问题。首先,利用Hamilton能量变分原理建立了薄板振动模型的变分方程,计算得到方程内各项能量表达式并代入位移容许函数。其次,对其中的未知傅里叶系数进行变分求解得到模型的矩阵方程,通过数值计算方法求解矩阵方程得到薄板自由振动频率和特征向量。最后,以经典边界条件和弹性边界条件为典型算例进行了计算分析,并与有限元仿真结果及已有文献对比验证了所提方法的计算高效性、准确性。另外,讨论了薄板长宽比和约束弹簧刚度系数对薄板振动特性的影响。
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吴宝宁,男,2001年生,四川巴中人,硕士研究生;主要研究方向为结构振动与动力学控制;E-mail:2022210418@my.swjtu.edu.cn。
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吴宝宁,男,2001年生,四川巴中人,硕士研究生;主要研究方向为结构振动与动力学控制;E-mail:2022210418@my.swjtu.edu.cn。
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1.School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China), AuthorCompanyExt(id=1241049274822226179, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, companyId=1241049274788671745, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.西南交通大学 机械工程学院,成都 610031)]), AuthorCompany(id=1241049276529307913, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, xref=2., ext=[AuthorCompanyExt(id=1241049276567056649, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, companyId=1241049276529307913, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Tangshan Institute, Southwest Jiaotong University, Tangshan 063000, China), AuthorCompanyExt(id=1241049276575445258, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, companyId=1241049276529307913, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.西南交通大学 唐山研究院,唐山 063000)])], figs=[ArticleFig(id=1241049282791403968, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=EN, label=Fig.1, caption=
Rectangular thin plate with elastic boundary constraints, figureFileSmall=i1K2DRbdrGq3g9tQPWfR7Q==, figureFileBig=mwj0FN3RS27/vXAwRS4Frg==, tableContent=null), ArticleFig(id=1241049282921427401, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=CN, label=图1, caption=
弹性边界约束的矩形薄板, figureFileSmall=i1K2DRbdrGq3g9tQPWfR7Q==, figureFileBig=mwj0FN3RS27/vXAwRS4Frg==, tableContent=null), ArticleFig(id=1241049283424743900, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=EN, label=Fig.2, caption=
Vibration mode of the C-C-C-C thin plate obtained by the proposed method, figureFileSmall=jCxctm2EfoDpFePJ2csG6w==, figureFileBig=EzcLBMifH8nJzmqtNHkQ3Q==, tableContent=null), ArticleFig(id=1241049283605098984, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=CN, label=图2, caption=
文中提出方法得到的C-C-C-C薄板振型, figureFileSmall=jCxctm2EfoDpFePJ2csG6w==, figureFileBig=EzcLBMifH8nJzmqtNHkQ3Q==, tableContent=null), ArticleFig(id=1241049285198934512, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=EN, label=Fig.3, caption=
Vibration mode of the C-C-C-C thin plate obtained by finite element method, figureFileSmall=VArJv5aQpn6RfBPzEaHkHw==, figureFileBig=Fie8lpW3llMYGe9Hw1weCQ==, tableContent=null), ArticleFig(id=1241049285484147191, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=CN, label=图3, caption=
有限元方法得到的C-C-C-C薄板振型, figureFileSmall=VArJv5aQpn6RfBPzEaHkHw==, figureFileBig=Fie8lpW3llMYGe9Hw1weCQ==, tableContent=null), ArticleFig(id=1241049285777748480, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=EN, label=Tab.1, caption=
Relation between the spring stiffness value and the boundary condition
, figureFileSmall=null, figureFileBig=null, tableContent=
边界条件 Boundary condition | C | S | F | E |
|---|
| k/(N/m) | 5×107 | 5×107 | 0 | 0~5×107 |
| K/(N∙m/rad) | 5×107 | 0 | 0 | 0~5×107 |
), ArticleFig(id=1241049285979075080, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=CN, label=表1, caption=
约束弹簧刚度值与边界条件关系
, figureFileSmall=null, figureFileBig=null, tableContent=
边界条件 Boundary condition | C | S | F | E |
|---|
| k/(N/m) | 5×107 | 5×107 | 0 | 0~5×107 |
| K/(N∙m/rad) | 5×107 | 0 | 0 | 0~5×107 |
), ArticleFig(id=1241049286176207371, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=EN, label=Tab.2, caption=
Dimension one frequency of the C-C-C-C rectangular thin plate with different number of truncated terms
, figureFileSmall=null, figureFileBig=null, tableContent=
| M=N | 量纲一频率 Dimension one frequency |
|---|
| 1 | 2 | 3 | 4 | 5 |
|---|
| 5 | 36.273 | 74.161 | 74.161 | 109.73 | 135.37 |
| 6 | 36.085 | 73.999 | 73.999 | 109.73 | 132.84 |
| 8 | 36.023 | 73.618 | 73.618 | 108.79 | 132.05 |
| 10 | 35.996 | 73.473 | 73.473 | 108.42 | 131.73 |
| 12 | 35.988 | 73.407 | 73.407 | 108.28 | 131.57 |
| 13 | 35.986 | 73.399 | 73.399 | 108.22 | 131.56 |
| 14 | 35.985 | 73.394 | 73.394 | 108.21 | 131.56 |
| 15 | 35.985 | 73.394 | 73.394 | 108.21 | 131.56 |
| FEM | 35.985 | 73.392 | 73.392 | 108.21 | 131.58 |
参考文献 Reference | 35.985 | 73.393 | 73.393 | 108.21 | 131.58 |
), ArticleFig(id=1241049286394311188, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=CN, label=表2, caption=
不同截断项数下C-C-C-C矩形薄板量纲一频率
, figureFileSmall=null, figureFileBig=null, tableContent=
| M=N | 量纲一频率 Dimension one frequency |
|---|
| 1 | 2 | 3 | 4 | 5 |
|---|
| 5 | 36.273 | 74.161 | 74.161 | 109.73 | 135.37 |
| 6 | 36.085 | 73.999 | 73.999 | 109.73 | 132.84 |
| 8 | 36.023 | 73.618 | 73.618 | 108.79 | 132.05 |
| 10 | 35.996 | 73.473 | 73.473 | 108.42 | 131.73 |
| 12 | 35.988 | 73.407 | 73.407 | 108.28 | 131.57 |
| 13 | 35.986 | 73.399 | 73.399 | 108.22 | 131.56 |
| 14 | 35.985 | 73.394 | 73.394 | 108.21 | 131.56 |
| 15 | 35.985 | 73.394 | 73.394 | 108.21 | 131.56 |
| FEM | 35.985 | 73.392 | 73.392 | 108.21 | 131.58 |
参考文献 Reference | 35.985 | 73.393 | 73.393 | 108.21 | 131.58 |
), ArticleFig(id=1241049286578860572, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=EN, label=Tab.3, caption=
Dimension one frequency of the C-F-F-F rectangular plate with different aspect ratios
, figureFileSmall=null, figureFileBig=null, tableContent=
| r=a/b | 量纲一频率 Dimension one frequency |
|---|
| 1 | 2 | 3 | 4 | 5 |
|---|
| 1.0 | 3.472 | 8.512 | 21.289 | 27.205 | 30.978 |
| 3.470a | 8.504a | 21.279a | 27.201a | 30.948a |
| 3.471b | 8.506b | 21.283b | 27.199b | 30.953b |
| 1.5 | 3.456 | 11.673 | 21.477 | 39.371 | 53.568 |
| 3.453a | 11.654a | 21.283a | 39.319a | 53.544a |
| 2.0 | 3.443 | 14.840 | 21.448 | 48.249 | 60.195 |
| 3.439a | 14.800a | 21.430a | 48.171a | 60.143a |
| 2.5 | 3.432 | 18.033 | 21.413 | 57.322 | 60.173 |
| 3.427a | 17.960a | 21.392a | 57.209a | 60.115a |
), ArticleFig(id=1241049286788575779, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=CN, label=表3, caption=
不同长宽比下的C-F-F-F矩形板量纲一频率
, figureFileSmall=null, figureFileBig=null, tableContent=
| r=a/b | 量纲一频率 Dimension one frequency |
|---|
| 1 | 2 | 3 | 4 | 5 |
|---|
| 1.0 | 3.472 | 8.512 | 21.289 | 27.205 | 30.978 |
| 3.470a | 8.504a | 21.279a | 27.201a | 30.948a |
| 3.471b | 8.506b | 21.283b | 27.199b | 30.953b |
| 1.5 | 3.456 | 11.673 | 21.477 | 39.371 | 53.568 |
| 3.453a | 11.654a | 21.283a | 39.319a | 53.544a |
| 2.0 | 3.443 | 14.840 | 21.448 | 48.249 | 60.195 |
| 3.439a | 14.800a | 21.430a | 48.171a | 60.143a |
| 2.5 | 3.432 | 18.033 | 21.413 | 57.322 | 60.173 |
| 3.427a | 17.960a | 21.392a | 57.209a | 60.115a |
), ArticleFig(id=1241049287006679601, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=EN, label=Tab.4, caption=
Dimension one frequency of the C-S-S-F rectangular plate with different aspect ratios
, figureFileSmall=null, figureFileBig=null, tableContent=
| r=a/b | 量纲一频率 Dimension one frequency |
|---|
| 1 | 2 | 3 | 4 | 5 |
|---|
| 1.0 | 16.810 | 31.171 | 52.449 | 64.114 | 67.661 |
| 16.785a | 31.115a | 51.392a | 64.016a | 67.549a |
| 16.791b | 31.112b | 51.402b | 64.021b | 67.551b |
| 1.5 | 18.514 | 50.551 | 53.570 | 89.015 | 107.92 |
| 18.463a | 50.409a | 53.453a | 88.682a | 107.65a |
| 2.0 | 20.658 | 56.422 | 77.509 | 111.02 | 117.49 |
| 20.577a | 56.265a | 77.316a | 110.69a | 117.24a |
| 2.5 | 23.108 | 59.867 | 112.08 | 114.72 | 153.29 |
| 22.997a | 59.705a | 111.90a | 114.54a | 153.06a |
), ArticleFig(id=1241049287111537208, tenantId=1146029695717560320, journalId=1227999626482147330, articleId=1241049264147722351, language=CN, label=表4, caption=
不同长宽比下的C-S-S-F矩形板量纲一频率
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| r=a/b | 量纲一频率 Dimension one frequency |
|---|
| 1 | 2 | 3 | 4 | 5 |
|---|
| 1.0 | 16.810 | 31.171 | 52.449 | 64.114 | 67.661 |
| 16.785a | 31.115a | 51.392a | 64.016a | 67.549a |
| 16.791b | 31.112b | 51.402b | 64.021b | 67.551b |
| 1.5 | 18.514 | 50.551 | 53.570 | 89.015 | 107.92 |
| 18.463a | 50.409a | 53.453a | 88.682a | 107.65a |
| 2.0 | 20.658 | 56.422 | 77.509 | 111.02 | 117.49 |
| 20.577a | 56.265a | 77.316a | 110.69a | 117.24a |
| 2.5 | 23.108 | 59.867 | 112.08 | 114.72 | 153.29 |
| 22.997a | 59.705a | 111.90a | 114.54a | 153.06a |
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Dimension one frequency of the C-F-F-F rectangular plate with different rotational stiffness levels
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| Ka/D | 量纲一频率 Dimension one frequency |
|---|
| 1 | 2 | 3 | 4 | 5 |
|---|
| 1 | 7.537 | 11.717 | 24.322 | 29.457 | 33.076 |
| 7.534a | 11.708a | 24.300a | 29.445a | 33.029a |
| 7.522b | 11.693b | 24.287b | 29.431b | 33.015b |
| 10 | 7.813 | 12.326 | 28.431 | 32.729 | 35.967 |
| 7.810a | 12.317a | 28.408a | 32.720a | 35.924a |
| 100 | 7.902 | 12.604 | 30.239 | 34.546 | 37.611 |
| 7.899a | 12.597a | 30.218a | 34.537a | 37.574a |
| 1 000 | 7.912 | 12.642 | 30.483 | 34.810 | 37.859 |
| 7.910a | 12.635a | 30.463a | 34.801a | 37.825a |
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不同旋转刚度水平下C-F-F-F矩形板量纲一频率
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| Ka/D | 量纲一频率 Dimension one frequency |
|---|
| 1 | 2 | 3 | 4 | 5 |
|---|
| 1 | 7.537 | 11.717 | 24.322 | 29.457 | 33.076 |
| 7.534a | 11.708a | 24.300a | 29.445a | 33.029a |
| 7.522b | 11.693b | 24.287b | 29.431b | 33.015b |
| 10 | 7.813 | 12.326 | 28.431 | 32.729 | 35.967 |
| 7.810a | 12.317a | 28.408a | 32.720a | 35.924a |
| 100 | 7.902 | 12.604 | 30.239 | 34.546 | 37.611 |
| 7.899a | 12.597a | 30.218a | 34.537a | 37.574a |
| 1 000 | 7.912 | 12.642 | 30.483 | 34.810 | 37.859 |
| 7.910a | 12.635a | 30.463a | 34.801a | 37.825a |
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Dimension one frequency of the C-F-F-F rectangular plate with different lateral stiffness levels
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| ka3/D | 量纲一频率 Dimension one frequency |
|---|
| 1 | 2 | 3 | 4 | 5 |
|---|
| 1 | 5.552 | 10.525 | 27.834 | 32.011 | 35.335 |
| 5.534a | 10.498a | 27.802a | 31.988a | 35.312a |
| 10 | 7.814 | 12.326 | 28.432 | 32.729 | 35.967 |
| 7.796a | 12.308a | 28.404a | 32.705a | 35.945a |
| 100 | 15.042 | 21.823 | 33.835 | 39.140 | 41.913 |
| 15.031a | 21.812a | 33.813a | 39.119a | 41.897a |
| 1 000 | 20.222 | 32.762 | 51.295 | 60.085 | 63.138 |
| 20.215a | 32.750a | 51.272a | 60.068a | 63.122a |
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不同横向刚度水平下C-F-F-F矩形板量纲一频率
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| ka3/D | 量纲一频率 Dimension one frequency |
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| 1 | 2 | 3 | 4 | 5 |
|---|
| 1 | 5.552 | 10.525 | 27.834 | 32.011 | 35.335 |
| 5.534a | 10.498a | 27.802a | 31.988a | 35.312a |
| 10 | 7.814 | 12.326 | 28.432 | 32.729 | 35.967 |
| 7.796a | 12.308a | 28.404a | 32.705a | 35.945a |
| 100 | 15.042 | 21.823 | 33.835 | 39.140 | 41.913 |
| 15.031a | 21.812a | 33.813a | 39.119a | 41.897a |
| 1 000 | 20.222 | 32.762 | 51.295 | 60.085 | 63.138 |
| 20.215a | 32.750a | 51.272a | 60.068a | 63.122a |
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Dimension one frequency of the E-E-E-E rectangular plate with different aspect ratio
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| r=a/b | 量纲一频率 Dimension one frequency |
|---|
| 1 | 2 | 3 | 4 | 5 |
|---|
| 1.0 | 17.511 | 25.297 | 25.297 | 33.900 | 46.288 |
| 17.509a | 25.292a | 25.292a | 33.893a | 46.285a |
| 17.474b | 25.231b | 25.231b | 33.797b | 46.265b |
| 1.5 | 20.719 | 27.459 | 35.436 | 44.715 | 47.696 |
| 20.718a | 27.455a | 35.433a | 44.712a | 47.694a |
| 20.664b | 27.367b | 35.360b | 44.598b | 47.626b |
| 2.0 | 23.218 | 29.350 | 48.774 | 50.240 | 60.026 |
| 23.217a | 29.346a | 48.772a | 50.239a | 60.024a |
| 2.5 | 25.375 | 31.073 | 49.814 | 70.381 | 80.412 |
| 25.374a | 31.096a | 49.812a | 70.381a | 80.411a |
| 3.0 | 27.323 | 32.678 | 50.824 | 94.187 | 95.857 |
| 27.323a | 32.675a | 50.822a | 94.186a | 95.857a |
| 3.5 | 29.124 | 34.195 | 51.808 | 94.718 | 126.54 |
| 29.123a | 34.192a | 51.807a | 94.717a | 126.54a |
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不同长宽比下的E-E-E-E矩形板量纲一频率
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| r=a/b | 量纲一频率 Dimension one frequency |
|---|
| 1 | 2 | 3 | 4 | 5 |
|---|
| 1.0 | 17.511 | 25.297 | 25.297 | 33.900 | 46.288 |
| 17.509a | 25.292a | 25.292a | 33.893a | 46.285a |
| 17.474b | 25.231b | 25.231b | 33.797b | 46.265b |
| 1.5 | 20.719 | 27.459 | 35.436 | 44.715 | 47.696 |
| 20.718a | 27.455a | 35.433a | 44.712a | 47.694a |
| 20.664b | 27.367b | 35.360b | 44.598b | 47.626b |
| 2.0 | 23.218 | 29.350 | 48.774 | 50.240 | 60.026 |
| 23.217a | 29.346a | 48.772a | 50.239a | 60.024a |
| 2.5 | 25.375 | 31.073 | 49.814 | 70.381 | 80.412 |
| 25.374a | 31.096a | 49.812a | 70.381a | 80.411a |
| 3.0 | 27.323 | 32.678 | 50.824 | 94.187 | 95.857 |
| 27.323a | 32.675a | 50.822a | 94.186a | 95.857a |
| 3.5 | 29.124 | 34.195 | 51.808 | 94.718 | 126.54 |
| 29.123a | 34.192a | 51.807a | 94.717a | 126.54a |
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