Substructural Damage Detection With Incomplete Information of the Structure
This paper proposes a substructural damage identification approach without the information of responses and forces at the interface degrees-of-freedom. It is based on the response reconstruction technique using the unit impulse response function in the wavelet domain. The finite element model of the...
| Main Authors: | , |
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| Format: | Journal Article |
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ASME-AMER SOC MECHANICAL ENG
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/26846 |
| _version_ | 1848752101600002048 |
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| author | Li, Jun Law, S. |
| author_facet | Li, Jun Law, S. |
| author_sort | Li, Jun |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper proposes a substructural damage identification approach without the information of responses and forces at the interface degrees-of-freedom. It is based on the response reconstruction technique using the unit impulse response function in the wavelet domain. The finite element model of the target substructure and acceleration measurement data from the damaged substructure are required in the identification. A dynamic response sensitivity-based method is used for the substructural finite element model updating, and local damage is identified as a change in the elemental stiffness factors. The adaptive Tikhonov regularization technique is adopted to improve the identification results with the measurement noise effect. Numerical studies on a three-dimensional box-section girder are conducted to validate the proposed method of substructural damage identification. The simulated damage can be identified effectively even with 10% noise in the measurements and a 5% coefficient of variation in the elastic modulus of material of the structure. |
| first_indexed | 2025-11-14T08:03:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-26846 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:03:16Z |
| publishDate | 2012 |
| publisher | ASME-AMER SOC MECHANICAL ENG |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-268462018-03-29T09:08:49Z Substructural Damage Detection With Incomplete Information of the Structure Li, Jun Law, S. This paper proposes a substructural damage identification approach without the information of responses and forces at the interface degrees-of-freedom. It is based on the response reconstruction technique using the unit impulse response function in the wavelet domain. The finite element model of the target substructure and acceleration measurement data from the damaged substructure are required in the identification. A dynamic response sensitivity-based method is used for the substructural finite element model updating, and local damage is identified as a change in the elemental stiffness factors. The adaptive Tikhonov regularization technique is adopted to improve the identification results with the measurement noise effect. Numerical studies on a three-dimensional box-section girder are conducted to validate the proposed method of substructural damage identification. The simulated damage can be identified effectively even with 10% noise in the measurements and a 5% coefficient of variation in the elastic modulus of material of the structure. 2012 Journal Article http://hdl.handle.net/20.500.11937/26846 10.1115/1.4005552 ASME-AMER SOC MECHANICAL ENG restricted |
| spellingShingle | Li, Jun Law, S. Substructural Damage Detection With Incomplete Information of the Structure |
| title | Substructural Damage Detection With Incomplete Information of the Structure |
| title_full | Substructural Damage Detection With Incomplete Information of the Structure |
| title_fullStr | Substructural Damage Detection With Incomplete Information of the Structure |
| title_full_unstemmed | Substructural Damage Detection With Incomplete Information of the Structure |
| title_short | Substructural Damage Detection With Incomplete Information of the Structure |
| title_sort | substructural damage detection with incomplete information of the structure |
| url | http://hdl.handle.net/20.500.11937/26846 |