Article(id=1245390151803847004, tenantId=1146029695717560320, journalId=1241701559352995854, issueId=1245390147664068826, articleNumber=null, orderNo=null, doi=10.13197/j.eeed.2024.0408, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1680624000000, receivedDateStr=2023-04-05, revisedDate=1685289600000, revisedDateStr=2023-05-29, acceptedDate=null, acceptedDateStr=null, onlineDate=1774853750420, onlineDateStr=2026-03-30, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774853750420, onlineIssueDateStr=2026-03-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774853750420, creator=13701087609, updateTime=1774853750420, updator=13701087609, issue=Issue{id=1245390147664068826, tenantId=1146029695717560320, journalId=1241701559352995854, year='2024', volume='44', issue='4', pageStart='1', pageEnd='233', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1774853749433, creator=13701087609, updateTime=1774854381443, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1245392798560662150, tenantId=1146029695717560320, journalId=1241701559352995854, issueId=1245390147664068826, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1245392798560662151, tenantId=1146029695717560320, journalId=1241701559352995854, issueId=1245390147664068826, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=79, endPage=88, ext={EN=ArticleExt(id=1245390152059699569, articleId=1245390151803847004, tenantId=1146029695717560320, journalId=1241701559352995854, language=EN, title=Wooden beam damage identification based on curvature mode and wavelet transform, columnId=null, journalTitle=Earthquake Engineering and Engineering Dynamics, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To address the limitations of curvature mode indicators in identifying minor structural damage, a method for structural damage identification that combines curvature mode and wavelet transform has been proposed. In this paper, ANSYS was used to establish a finite element model of the wooden beam before and after the damage and carry out modal analysis, and the curvature modes of the wooden beam before and after the damage was subjected to discrete wavelet transform to obtain the wavelet coefficient difference index. the damage location of the wooden beam was judged according to the peak of the wavelet coefficient difference mutation, and the damage degree of the wooden beam was estimated by fitting the relationship between the wavelet coefficient difference and the damage degree. The wooden beam test verified the index. The results show that the wavelet coefficient difference index can accurately identify the damaged location of wooden beams. The damage degree of wooden beams can be quantitatively estimated by fitting the relationship between the wavelet coefficient difference index and the damage degree. The research results provide a theoretical basis for wooden beam damage identification.
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为解决曲率模态指标对结构小损伤识别的局限性,提出了一种基于曲率模态和小波变换相结合的结构损伤识别方法。以简支木梁为研究对象,采用ANSYS建立木梁损伤前后有限元模型并进行模态分析,对木梁损伤前后的曲率模态进行离散小波变换得到小波系数差指标;根据小波系数差突变峰值判断木梁的损伤位置,通过拟合小波系数差与损伤程度的关系式估算木梁的损伤程度,并由木梁试验对该指标进行了验证。结果表明:小波系数差指标可以准确识别木梁的损伤位置,通过拟合小波系数差指标与损伤程度的关系式来定量估算木梁的损伤程度。该研究成果为木梁损伤识别提供了理论依据。
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1.聊城大学 建筑工程学院,山东 聊城 252000)]), AuthorCompany(id=1245390161043899160, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, xref=2., ext=[AuthorCompanyExt(id=1245390161052287769, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, companyId=1245390161043899160, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.School of Civil Engineering, Tianshui Normal University, Tianshui 741001, China), AuthorCompanyExt(id=1245390161060676378, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, companyId=1245390161043899160, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.天水师范学院 土木工程学院,甘肃 天水 741001)])], figs=[ArticleFig(id=1245390164449674154, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 1, caption=
Finite element model of wooden beam, figureFileSmall=lXm0y8W0tqW2jJbvM/tqxg==, figureFileBig=JZshrlzMSt4hegaCKVydVA==, tableContent=null), ArticleFig(id=1245390164646806446, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图1, caption=
木梁有限元模型, figureFileSmall=lXm0y8W0tqW2jJbvM/tqxg==, figureFileBig=JZshrlzMSt4hegaCKVydVA==, tableContent=null), ArticleFig(id=1245390164890076087, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 2, caption=
Comparison of the first-order curvature modes for single position damage, figureFileSmall=hFauO8viycJw0vqYJkc5qQ==, figureFileBig=zXhtwkNMh91wgVPsd2mz0A==, tableContent=null), ArticleFig(id=1245390165007516604, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图2, caption=
单处位置损伤的一阶曲率模态对比, figureFileSmall=hFauO8viycJw0vqYJkc5qQ==, figureFileBig=zXhtwkNMh91wgVPsd2mz0A==, tableContent=null), ArticleFig(id=1245390165133345723, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 3, caption=
Comparison of wavelet coefficient differences for different damage levels for single position damage, figureFileSmall=fgHSy4Fb5ILfQhTKgS4iRw==, figureFileBig=rzQt9b5p5OYfYEaR4uKuDA==, tableContent=null), ArticleFig(id=1245390165280146370, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图3, caption=
单处位置损伤不同损伤程度的小波系数差对比, figureFileSmall=fgHSy4Fb5ILfQhTKgS4iRw==, figureFileBig=rzQt9b5p5OYfYEaR4uKuDA==, tableContent=null), ArticleFig(id=1245390165397586889, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 4, caption=
Comparison of the first-order curvature modes for two position damages, figureFileSmall=7+MfcOoGQh6PshPBwdgHPw==, figureFileBig=izKU7bPYCYmH7sLxnumw5A==, tableContent=null), ArticleFig(id=1245390165544387530, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图4, caption=
两处位置损伤的一阶曲率模态对比, figureFileSmall=7+MfcOoGQh6PshPBwdgHPw==, figureFileBig=izKU7bPYCYmH7sLxnumw5A==, tableContent=null), ArticleFig(id=1245390165640856525, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 5, caption=
Comparison of wavelet coefficient differences for different damage levels for two position damages, figureFileSmall=haE/O+Mp/9TJ6OzowVZhkw==, figureFileBig=mf/S8qFLL+LohblTqc3yVQ==, tableContent=null), ArticleFig(id=1245390165762491344, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图5, caption=
两处位置损伤不同损伤程度的小波系数差对比, figureFileSmall=haE/O+Mp/9TJ6OzowVZhkw==, figureFileBig=mf/S8qFLL+LohblTqc3yVQ==, tableContent=null), ArticleFig(id=1245390165879931860, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 6, caption=
Fitting of damage degree and damage index at a single position damage, figureFileSmall=op8iGpjtYVMf3cPZhKPt2Q==, figureFileBig=V/bGDwkucwz28X5r16zvOw==, tableContent=null), ArticleFig(id=1245390166014149591, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图6, caption=
单处位置损伤处损伤程度和损伤指标拟合图, figureFileSmall=op8iGpjtYVMf3cPZhKPt2Q==, figureFileBig=V/bGDwkucwz28X5r16zvOw==, tableContent=null), ArticleFig(id=1245390166135784410, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 7, caption=
Difference of wavelet coefficients for 25% damage at a single position damage, figureFileSmall=6sptV00uhPYlCmqDGRf6gg==, figureFileBig=hBsPHZ6Ni6A5Aid0OT+a5Q==, tableContent=null), ArticleFig(id=1245390166261613535, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图7, caption=
单处位置损伤处损伤25%的小波系数差图, figureFileSmall=6sptV00uhPYlCmqDGRf6gg==, figureFileBig=hBsPHZ6Ni6A5Aid0OT+a5Q==, tableContent=null), ArticleFig(id=1245390166387442662, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 8, caption=
Fitting of damage degree and damage index at the two position damages, figureFileSmall=p41oZ+t9SBt0Y21o+U4meA==, figureFileBig=XIb62xy5x5ZiudhH6OP0ow==, tableContent=null), ArticleFig(id=1245390166504883177, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图8, caption=
两处位置损伤处损伤程度和损伤指标拟合图, figureFileSmall=p41oZ+t9SBt0Y21o+U4meA==, figureFileBig=XIb62xy5x5ZiudhH6OP0ow==, tableContent=null), ArticleFig(id=1245390166613935082, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 9, caption=
Difference of wavelet coefficients for 25% damage at the two position damages, figureFileSmall=UmP6npy6dyErhVRHShGx0A==, figureFileBig=+oDYZxjubW9TYcvTd1mHYg==, tableContent=null), ArticleFig(id=1245390166722986989, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图9, caption=
两处位置损伤处损伤25%的小波系数差图, figureFileSmall=UmP6npy6dyErhVRHShGx0A==, figureFileBig=+oDYZxjubW9TYcvTd1mHYg==, tableContent=null), ArticleFig(id=1245390166827844591, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 10, caption=
Wooden beam grooving site diagram, figureFileSmall=0SZSwJYeMkS31NBSwD8UZQ==, figureFileBig=75FMXkNkNk3ObnSdvk9WNg==, tableContent=null), ArticleFig(id=1245390166945285107, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图10, caption=
木梁开槽现场图, figureFileSmall=0SZSwJYeMkS31NBSwD8UZQ==, figureFileBig=75FMXkNkNk3ObnSdvk9WNg==, tableContent=null), ArticleFig(id=1245390167058531318, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 11, caption=
Wooden beam field test and diagram, figureFileSmall=OqRFBRkFUSuRKhWXTgTMVQ==, figureFileBig=mRT9Gq0GrJG4oaqJoTM3MQ==, tableContent=null), ArticleFig(id=1245390167146611705, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图11, caption=
木梁现场测试和示意图, figureFileSmall=OqRFBRkFUSuRKhWXTgTMVQ==, figureFileBig=mRT9Gq0GrJG4oaqJoTM3MQ==, tableContent=null), ArticleFig(id=1245390167301800955, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 12, caption=
Comparison of wavelet coefficient differences for different damage levels for single position damage, figureFileSmall=zRyuU98Hs9sb5NKHCwibGw==, figureFileBig=Y1+t630IFFsp45fU5dZrww==, tableContent=null), ArticleFig(id=1245390167448601599, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图12, caption=
单处位置损伤不同损伤程度的小波系数差对比, figureFileSmall=zRyuU98Hs9sb5NKHCwibGw==, figureFileBig=Y1+t630IFFsp45fU5dZrww==, tableContent=null), ArticleFig(id=1245390167528292352, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 13, caption=
Comparison of wavelet coefficient differences for different damage levels for two position damages, figureFileSmall=HVzfn4L7sBiHTy7kv/k0hQ==, figureFileBig=S/RrvFOth511OPiVJCYq3A==, tableContent=null), ArticleFig(id=1245390167641538563, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图13, caption=
两处位置损伤不同损伤程度的小波系数差对比, figureFileSmall=HVzfn4L7sBiHTy7kv/k0hQ==, figureFileBig=S/RrvFOth511OPiVJCYq3A==, tableContent=null), ArticleFig(id=1245390167721230340, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Fig. 14, caption=
Single position damage degree and damage index fitting graph, figureFileSmall=6MNRDpQ1K+VUr9NlCCRqAg==, figureFileBig=UKKWkdgdJlbS4iKR6lUgkA==, tableContent=null), ArticleFig(id=1245390167792533511, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=图14, caption=
单处位置损伤程度和损伤指标拟合图, figureFileSmall=6MNRDpQ1K+VUr9NlCCRqAg==, figureFileBig=UKKWkdgdJlbS4iKR6lUgkA==, tableContent=null), ArticleFig(id=1245390167930945546, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Table 1, caption=
Material parameters of wooden beam
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 弹性模量/MPa | 泊松比 | 剪切模量/MPa | 密度/(kg/m3) |
|---|
| EL | ER | ET | μLR | μLT | μRT | GLR | GLT | GRT |
|---|
| 试验数值 | 9752.17 | 2058.57 | 452.90 | 0.490 | 0.410 | 0.353 | 585.13 | 731.41 | 175.54 | 508 |
), ArticleFig(id=1245390168027414541, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=表1, caption=
木梁材料参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 弹性模量/MPa | 泊松比 | 剪切模量/MPa | 密度/(kg/m3) |
|---|
| EL | ER | ET | μLR | μLT | μRT | GLR | GLT | GRT |
|---|
| 试验数值 | 9752.17 | 2058.57 | 452.90 | 0.490 | 0.410 | 0.353 | 585.13 | 731.41 | 175.54 | 508 |
), ArticleFig(id=1245390168111300624, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=EN, label=Table 2, caption=
Frequency comparison of test wooden beam and finite element model
, figureFileSmall=null, figureFileBig=null, tableContent=
| 阶数 | 有限元模型计算值/Hz | 试验木梁计算值/Hz | 误差/% |
|---|
| 一阶 | 76.55 | 75.24 | 1.74 |
| 二阶 | 264.14 | 260.48 | 1.41 |
), ArticleFig(id=1245390168203575315, tenantId=1146029695717560320, journalId=1241701559352995854, articleId=1245390151803847004, language=CN, label=表2, caption=
试验木梁与有限元模型频率对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 阶数 | 有限元模型计算值/Hz | 试验木梁计算值/Hz | 误差/% |
|---|
| 一阶 | 76.55 | 75.24 | 1.74 |
| 二阶 | 264.14 | 260.48 | 1.41 |
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