Finding Damage Localizations of a Planar Truss Using Modal Strain Energy Change
A novel structural damage localization method based on modal strain energy changes is proposed. The proposed method does not utilize the first several modes together as usual but selectively makes use of some sensitive modes for each element. Both the magnitude of normalized elemental modal strain e...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/3040682 |
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| _version_ | 1849305632883081216 |
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| author | Xiaoshun Wu Juwei Xia Xuekun Zhu |
| author_facet | Xiaoshun Wu Juwei Xia Xuekun Zhu |
| author_sort | Xiaoshun Wu |
| collection | DOAJ |
| description | A novel structural damage localization method based on modal strain energy changes is proposed. The proposed method does not utilize the first several modes together as usual but selectively makes use of some sensitive modes for each element. Both the magnitude of normalized elemental modal strain energy and the capability of each element to resist identification uncertainties are considered to determine the sensitive modes. Elements’ capability to resist identification uncertainties is calculated by using the Monte Carlo method. Based on determined sensitive modes, an in-turn damage-checking process is employed to judge the damage state of each element. A typical planar truss is numerically analyzed. The results show that the proposed method is more effective than that based on modal strain energy change ratio even when using the first several modes together as usual. Furthermore, by utilizing some sensitive modes only, the proposed method becomes much more robust, making damage localization more easy and reliable. |
| format | Article |
| id | doaj-art-06ae9a8d0c7d445394f2f90226909632 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-06ae9a8d0c7d445394f2f902269096322025-08-20T03:55:23ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/30406823040682Finding Damage Localizations of a Planar Truss Using Modal Strain Energy ChangeXiaoshun Wu0Juwei Xia1Xuekun Zhu2Nanchang Campus, Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, ChinaZheJiang WuZhou Project Management Co., Ltd., Hangzhou, Zhejiang 310053, ChinaDepartment of Road & Bridge Engineering, Jiangxi V&T College of Communication, Nanchang, Jiangxi 330013, ChinaA novel structural damage localization method based on modal strain energy changes is proposed. The proposed method does not utilize the first several modes together as usual but selectively makes use of some sensitive modes for each element. Both the magnitude of normalized elemental modal strain energy and the capability of each element to resist identification uncertainties are considered to determine the sensitive modes. Elements’ capability to resist identification uncertainties is calculated by using the Monte Carlo method. Based on determined sensitive modes, an in-turn damage-checking process is employed to judge the damage state of each element. A typical planar truss is numerically analyzed. The results show that the proposed method is more effective than that based on modal strain energy change ratio even when using the first several modes together as usual. Furthermore, by utilizing some sensitive modes only, the proposed method becomes much more robust, making damage localization more easy and reliable.http://dx.doi.org/10.1155/2019/3040682 |
| spellingShingle | Xiaoshun Wu Juwei Xia Xuekun Zhu Finding Damage Localizations of a Planar Truss Using Modal Strain Energy Change Advances in Civil Engineering |
| title | Finding Damage Localizations of a Planar Truss Using Modal Strain Energy Change |
| title_full | Finding Damage Localizations of a Planar Truss Using Modal Strain Energy Change |
| title_fullStr | Finding Damage Localizations of a Planar Truss Using Modal Strain Energy Change |
| title_full_unstemmed | Finding Damage Localizations of a Planar Truss Using Modal Strain Energy Change |
| title_short | Finding Damage Localizations of a Planar Truss Using Modal Strain Energy Change |
| title_sort | finding damage localizations of a planar truss using modal strain energy change |
| url | http://dx.doi.org/10.1155/2019/3040682 |
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