Evaluating A Feature Extraction Algorithm For Damage Detection of Offshore Jacket Platforms Using Physical Model And Finite Element Model Updating
One of the most important items in the field of engineering and design of structures is safety assessment. It is usually complicated, due to uncertainty in determining the most important parameters in the final design. This paper describes a new method for updating stiffness matrix structure that is...
| Main Authors: | , , |
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| Format: | Article |
| Language: | fas |
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Iranian Association of Naval Architecture and Marine Engineering
2016-09-01
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| Series: | نشریه مهندسی دریا |
| Subjects: | |
| Online Access: | http://marine-eng.ir/article-1-411-en.html |
| _version_ | 1818991588211163136 |
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| author | Farhad Hosseinlou Alireza Mojtahedi Mohammad Ali Lotfollahi3 |
| author_facet | Farhad Hosseinlou Alireza Mojtahedi Mohammad Ali Lotfollahi3 |
| author_sort | Farhad Hosseinlou |
| collection | DOAJ |
| description | One of the most important items in the field of engineering and design of structures is safety assessment. It is usually complicated, due to uncertainty in determining the most important parameters in the final design. This paper describes a new method for updating stiffness matrix structure that is capable of identifying the damage to individual members, when limited modal data is available by using results of the experiment on physical model of the offshore jacket platforms. We evaluated selection procedure inactive degrees of freedom in the process reduced model with a reasonable criterion by using the sensitivity analysis of system response under base excitation. This performance leads to faster convergence of iterative algorithm. Also, in this study, with using the finite element model updating based on the empirical models, it was considered during the process as much as possible to overcome the problem of uncertainty in modeling. |
| first_indexed | 2024-12-20T20:12:39Z |
| format | Article |
| id | doaj.art-a717c02bc35342948619f5f22b5afa1a |
| institution | Directory Open Access Journal |
| issn | 1735-7608 2645-8136 |
| language | fas |
| last_indexed | 2024-12-20T20:12:39Z |
| publishDate | 2016-09-01 |
| publisher | Iranian Association of Naval Architecture and Marine Engineering |
| record_format | Article |
| series | نشریه مهندسی دریا |
| spelling | doaj.art-a717c02bc35342948619f5f22b5afa1a2022-12-21T19:27:47ZfasIranian Association of Naval Architecture and Marine Engineeringنشریه مهندسی دریا1735-76082645-81362016-09-01122393104Evaluating A Feature Extraction Algorithm For Damage Detection of Offshore Jacket Platforms Using Physical Model And Finite Element Model UpdatingFarhad Hosseinlou0Alireza Mojtahedi1Mohammad Ali Lotfollahi32 university of tabriz university of tabriz university of tabriz One of the most important items in the field of engineering and design of structures is safety assessment. It is usually complicated, due to uncertainty in determining the most important parameters in the final design. This paper describes a new method for updating stiffness matrix structure that is capable of identifying the damage to individual members, when limited modal data is available by using results of the experiment on physical model of the offshore jacket platforms. We evaluated selection procedure inactive degrees of freedom in the process reduced model with a reasonable criterion by using the sensitivity analysis of system response under base excitation. This performance leads to faster convergence of iterative algorithm. Also, in this study, with using the finite element model updating based on the empirical models, it was considered during the process as much as possible to overcome the problem of uncertainty in modeling.http://marine-eng.ir/article-1-411-en.htmloffshore jacket platformsdamage detectionmodel updatingmodel reductionsensitivity analysis. |
| spellingShingle | Farhad Hosseinlou Alireza Mojtahedi Mohammad Ali Lotfollahi3 Evaluating A Feature Extraction Algorithm For Damage Detection of Offshore Jacket Platforms Using Physical Model And Finite Element Model Updating نشریه مهندسی دریا offshore jacket platforms damage detection model updating model reduction sensitivity analysis. |
| title | Evaluating A Feature Extraction Algorithm For Damage Detection of Offshore Jacket Platforms Using Physical Model And Finite Element Model Updating |
| title_full | Evaluating A Feature Extraction Algorithm For Damage Detection of Offshore Jacket Platforms Using Physical Model And Finite Element Model Updating |
| title_fullStr | Evaluating A Feature Extraction Algorithm For Damage Detection of Offshore Jacket Platforms Using Physical Model And Finite Element Model Updating |
| title_full_unstemmed | Evaluating A Feature Extraction Algorithm For Damage Detection of Offshore Jacket Platforms Using Physical Model And Finite Element Model Updating |
| title_short | Evaluating A Feature Extraction Algorithm For Damage Detection of Offshore Jacket Platforms Using Physical Model And Finite Element Model Updating |
| title_sort | evaluating a feature extraction algorithm for damage detection of offshore jacket platforms using physical model and finite element model updating |
| topic | offshore jacket platforms damage detection model updating model reduction sensitivity analysis. |
| url | http://marine-eng.ir/article-1-411-en.html |
| work_keys_str_mv | AT farhadhosseinlou evaluatingafeatureextractionalgorithmfordamagedetectionofoffshorejacketplatformsusingphysicalmodelandfiniteelementmodelupdating AT alirezamojtahedi evaluatingafeatureextractionalgorithmfordamagedetectionofoffshorejacketplatformsusingphysicalmodelandfiniteelementmodelupdating AT mohammadalilotfollahi3 evaluatingafeatureextractionalgorithmfordamagedetectionofoffshorejacketplatformsusingphysicalmodelandfiniteelementmodelupdating |