IMPROVED CROSS-MODEL MODAL STRAIN ENERGY METHOD FOR STRUCTURAL DAMAGE LOCALIZATION
In order to improve the accuracy of structural damage localization, a method to locate structural damages is proposed by combining the cross-model modal strain energy and the wavelet analysis(WA). Firstly, indices based on cross-modelmodal strain energy of all elements have been calculated. Secondly...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2024-04-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.02.032 |
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| _version_ | 1850091093330231296 |
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| author | ZHANG YaRu MA Jun WU XiaoShun |
| author_facet | ZHANG YaRu MA Jun WU XiaoShun |
| author_sort | ZHANG YaRu |
| collection | DOAJ |
| description | In order to improve the accuracy of structural damage localization, a method to locate structural damages is proposed by combining the cross-model modal strain energy and the wavelet analysis(WA). Firstly, indices based on cross-modelmodal strain energy of all elements have been calculated. Secondly, the wavelet analysis is conducted on the sequence composed of the calculated indices of all elements, with high-frequency detail coefficients extracted to form the improved damage index. Finally, damage locations are judged according to the improved index. A planar truss is taken as the numerical example, with the Monte Carlo analysis carried out in consideration of 5% noise level. The result shows that the improved index is more robust to resist noise interference and can better indicate damage locations. |
| format | Article |
| id | doaj-art-6cc0ab529a464c48876c19bdfc9c007e |
| institution | DOAJ |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2024-04-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-6cc0ab529a464c48876c19bdfc9c007e2025-08-20T02:42:26ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692024-04-014650350863929975IMPROVED CROSS-MODEL MODAL STRAIN ENERGY METHOD FOR STRUCTURAL DAMAGE LOCALIZATIONZHANG YaRuMA JunWU XiaoShunIn order to improve the accuracy of structural damage localization, a method to locate structural damages is proposed by combining the cross-model modal strain energy and the wavelet analysis(WA). Firstly, indices based on cross-modelmodal strain energy of all elements have been calculated. Secondly, the wavelet analysis is conducted on the sequence composed of the calculated indices of all elements, with high-frequency detail coefficients extracted to form the improved damage index. Finally, damage locations are judged according to the improved index. A planar truss is taken as the numerical example, with the Monte Carlo analysis carried out in consideration of 5% noise level. The result shows that the improved index is more robust to resist noise interference and can better indicate damage locations.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.02.032Damage localizationModal strain energyWavelet analysisStructural health monitoringModal identification |
| spellingShingle | ZHANG YaRu MA Jun WU XiaoShun IMPROVED CROSS-MODEL MODAL STRAIN ENERGY METHOD FOR STRUCTURAL DAMAGE LOCALIZATION Jixie qiangdu Damage localization Modal strain energy Wavelet analysis Structural health monitoring Modal identification |
| title | IMPROVED CROSS-MODEL MODAL STRAIN ENERGY METHOD FOR STRUCTURAL DAMAGE LOCALIZATION |
| title_full | IMPROVED CROSS-MODEL MODAL STRAIN ENERGY METHOD FOR STRUCTURAL DAMAGE LOCALIZATION |
| title_fullStr | IMPROVED CROSS-MODEL MODAL STRAIN ENERGY METHOD FOR STRUCTURAL DAMAGE LOCALIZATION |
| title_full_unstemmed | IMPROVED CROSS-MODEL MODAL STRAIN ENERGY METHOD FOR STRUCTURAL DAMAGE LOCALIZATION |
| title_short | IMPROVED CROSS-MODEL MODAL STRAIN ENERGY METHOD FOR STRUCTURAL DAMAGE LOCALIZATION |
| title_sort | improved cross model modal strain energy method for structural damage localization |
| topic | Damage localization Modal strain energy Wavelet analysis Structural health monitoring Modal identification |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2024.02.032 |
| work_keys_str_mv | AT zhangyaru improvedcrossmodelmodalstrainenergymethodforstructuraldamagelocalization AT majun improvedcrossmodelmodalstrainenergymethodforstructuraldamagelocalization AT wuxiaoshun improvedcrossmodelmodalstrainenergymethodforstructuraldamagelocalization |