Structural Pounding Detection by Using Wavelet Scalogram.
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| Title: | Structural Pounding Detection by Using Wavelet Scalogram. |
|---|---|
| Authors: | Shutao Xing1 shutaoxing@yahoo.com, Halling, Marvin W.2, Qingli Meng3 |
| Source: | Advances in Acoustics & Vibration. 2012, Vol. 2012, p1-10. 10p. 1 Color Photograph, 1 Diagram, 7 Graphs. |
| Subjects: | Wavelets (Mathematics), Guttman scale, Structural analysis (Engineering), Structural health monitoring, Vibration (Mechanics), Numerical analysis |
| Abstract: | Structural pounding can cause considerable damage and even lead to collapse of structures. Most research focuses on modeling, parameter investigation, and mitigation approaches. With the development of structural health monitoring, the on-line detection of pounding becomes possible. The detection of pounding can provide useful information of potential damage of structures. This paper proposed using wavelet scalograms of dynamic response to detect pounding and examined the feasibility of this method. Numerical investigations were performed on a pounding system that consisted of a damped single-degree-of-freedom (SDOF) structure and a rigid barrier. Hertz contact model was used to simulate pounding behavior. The responses and pounding forces of the system under harmonic and earthquake excitations were numerically solved. The wavelet scalograms of acceleration responses were used to identify poundings. It was found that the scalograms can indicate the occurrence of pounding and occurrence time very well. The severity of the poundings was also approximately estimated. Experimental studies were carried out, in which shake table tests were conducted on a bridge model that underwent pounding between its different components during ground motion excitation. The wavelet scalograms of the bridge responses indicated pounding occurrence quite well. Hence the conclusions from the numerical studies were verified experimentally. [ABSTRACT FROM AUTHOR] |
| Copyright of Advances in Acoustics & Vibration is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 84996027 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Structural Pounding Detection by Using Wavelet Scalogram. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Shutao+Xing%22">Shutao Xing</searchLink><relatesTo>1</relatesTo><i> shutaoxing@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Halling%2C+Marvin+W%2E%22">Halling, Marvin W.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Qingli+Meng%22">Qingli Meng</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Advances+in+Acoustics+%26+Vibration%22">Advances in Acoustics & Vibration</searchLink>. 2012, Vol. 2012, p1-10. 10p. 1 Color Photograph, 1 Diagram, 7 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Wavelets+%28Mathematics%29%22">Wavelets (Mathematics)</searchLink><br /><searchLink fieldCode="DE" term="%22Guttman+scale%22">Guttman scale</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+analysis+%28Engineering%29%22">Structural analysis (Engineering)</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+health+monitoring%22">Structural health monitoring</searchLink><br /><searchLink fieldCode="DE" term="%22Vibration+%28Mechanics%29%22">Vibration (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Numerical+analysis%22">Numerical analysis</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Structural pounding can cause considerable damage and even lead to collapse of structures. Most research focuses on modeling, parameter investigation, and mitigation approaches. With the development of structural health monitoring, the on-line detection of pounding becomes possible. The detection of pounding can provide useful information of potential damage of structures. This paper proposed using wavelet scalograms of dynamic response to detect pounding and examined the feasibility of this method. Numerical investigations were performed on a pounding system that consisted of a damped single-degree-of-freedom (SDOF) structure and a rigid barrier. Hertz contact model was used to simulate pounding behavior. The responses and pounding forces of the system under harmonic and earthquake excitations were numerically solved. The wavelet scalograms of acceleration responses were used to identify poundings. It was found that the scalograms can indicate the occurrence of pounding and occurrence time very well. The severity of the poundings was also approximately estimated. Experimental studies were carried out, in which shake table tests were conducted on a bridge model that underwent pounding between its different components during ground motion excitation. The wavelet scalograms of the bridge responses indicated pounding occurrence quite well. Hence the conclusions from the numerical studies were verified experimentally. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Advances in Acoustics & Vibration is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1155/2012/805141 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 1 Subjects: – SubjectFull: Wavelets (Mathematics) Type: general – SubjectFull: Guttman scale Type: general – SubjectFull: Structural analysis (Engineering) Type: general – SubjectFull: Structural health monitoring Type: general – SubjectFull: Vibration (Mechanics) Type: general – SubjectFull: Numerical analysis Type: general Titles: – TitleFull: Structural Pounding Detection by Using Wavelet Scalogram. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Shutao Xing – PersonEntity: Name: NameFull: Halling, Marvin W. – PersonEntity: Name: NameFull: Qingli Meng IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: 2012 Type: published Y: 2012 Identifiers: – Type: issn-print Value: 16876261 Numbering: – Type: volume Value: 2012 Titles: – TitleFull: Advances in Acoustics & Vibration Type: main |
| ResultId | 1 |
