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Damage Identification for Steel Frame Structures Using Two-Step Approach Combining Modal Strain Energy Method and Genetic Algorithm
In this study, the location and extent of damage in steel frame structures are identified using a two-step technique that combines the modal strain energy (MSE) method and a genetic algorithm (GA). In the first step, the damaged elements in the frame are identified using Modal Strain Energy-based Index (MSEBI). This indicator is determined from the change of modal strain energy value of intact and damaged states. To improve the precision of the damage localization results, four first bending mode shapes are combined to calculate MSEBI. In the second step, the damage extents are determined accurately by GA with the objective function based on the MSE change. A numerical verification on a steel plane frame with four different damaged scenarios. The results show that the proposed approach gives a high accuracy in identifying the position and severity of damage for frame structures with different damage scenarios.
Damage Identification for Steel Frame Structures Using Two-Step Approach Combining Modal Strain Energy Method and Genetic Algorithm
In this study, the location and extent of damage in steel frame structures are identified using a two-step technique that combines the modal strain energy (MSE) method and a genetic algorithm (GA). In the first step, the damaged elements in the frame are identified using Modal Strain Energy-based Index (MSEBI). This indicator is determined from the change of modal strain energy value of intact and damaged states. To improve the precision of the damage localization results, four first bending mode shapes are combined to calculate MSEBI. In the second step, the damage extents are determined accurately by GA with the objective function based on the MSE change. A numerical verification on a steel plane frame with four different damaged scenarios. The results show that the proposed approach gives a high accuracy in identifying the position and severity of damage for frame structures with different damage scenarios.
Damage Identification for Steel Frame Structures Using Two-Step Approach Combining Modal Strain Energy Method and Genetic Algorithm
Lecture Notes in Civil Engineering
Reddy, J. N. (editor) / Wang, Chien Ming (editor) / Luong, Van Hai (editor) / Le, Anh Tuan (editor) / Bach, Van-Sy (author) / Le, Thanh-Cao (author) / Nguyen, Chi-Thien (author) / Tran, Manh-Hung (author) / Pham, Minh-Nhan (author) / Ho, Duc-Duy (author)
2022-09-21
9 pages
Article/Chapter (Book)
Electronic Resource
English
Damage identification , Structural health monitoring , Modal strain energy , Genetic algorithm , Steel frame structures Energy , Sustainable Architecture/Green Buildings , Structural Materials , Geotechnical Engineering & Applied Earth Sciences , Building Construction and Design , Construction Management , Environmental Policy , Engineering
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