Seismic risk-based optimal design of fluid viscous dampers for seismically excited nonlinear structures
This paper introduces a procedure to risk-based optimal design of fluid viscous dampers (FVDs). To this end, the exceedance probability of specific performance level during the design lifetime as a safety criterion of the entire building is intended to be minimized. This, along with the minimization...
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| Format: | Article |
| Language: | English |
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K. N. Toosi University of Technology
2021-08-01
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| Series: | Numerical Methods in Civil Engineering |
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| Online Access: | https://nmce.kntu.ac.ir/article_160541_2ff712baeacd809d28b3bd9518fb8f72.pdf |
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| author | Mohtasham Mohebbi Sina Bakhshinezhad |
| author_facet | Mohtasham Mohebbi Sina Bakhshinezhad |
| author_sort | Mohtasham Mohebbi |
| collection | DOAJ |
| description | This paper introduces a procedure to risk-based optimal design of fluid viscous dampers (FVDs). To this end, the exceedance probability of specific performance level during the design lifetime as a safety criterion of the entire building is intended to be minimized. This, along with the minimization of the total damping coefficient of FVDs as the cost criterion of the dissipation system, are the considered objective functions. The damping coefficient of FVDs have been considered as design variables and the efficient configurations of damper properties over the height of the building have been determined. A multi-objective optimization framework using the non-dominated sorting genetic algorithm version II (NSGA-II) has been employed to solve the optimization problems and determine the set of Pareto optimal solutions. Linear and nonlinear FVDs with different capacities have been designed for an eight-story shear-type building with bilinear elastic-plastic stiffness behavior under 20 real earthquakes. The results show that the optimal FVDs reduce the seismic response and fragility of the building, while limiting the dampers’ cost. |
| format | Article |
| id | doaj-art-675e84ad4132431dbb20ec384a3a95c8 |
| institution | Kabale University |
| issn | 2345-4296 2783-3941 |
| language | English |
| publishDate | 2021-08-01 |
| publisher | K. N. Toosi University of Technology |
| record_format | Article |
| series | Numerical Methods in Civil Engineering |
| spelling | doaj-art-675e84ad4132431dbb20ec384a3a95c82024-12-20T08:32:02ZengK. N. Toosi University of TechnologyNumerical Methods in Civil Engineering2345-42962783-39412021-08-0162142410.52547/nmce.6.2.14160541Seismic risk-based optimal design of fluid viscous dampers for seismically excited nonlinear structuresMohtasham Mohebbi0Sina Bakhshinezhad1Professor, Faculty of Engineering, University of Mohaghegh Ardabili , Ardabil, Iran.PhD, Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil, Iran.This paper introduces a procedure to risk-based optimal design of fluid viscous dampers (FVDs). To this end, the exceedance probability of specific performance level during the design lifetime as a safety criterion of the entire building is intended to be minimized. This, along with the minimization of the total damping coefficient of FVDs as the cost criterion of the dissipation system, are the considered objective functions. The damping coefficient of FVDs have been considered as design variables and the efficient configurations of damper properties over the height of the building have been determined. A multi-objective optimization framework using the non-dominated sorting genetic algorithm version II (NSGA-II) has been employed to solve the optimization problems and determine the set of Pareto optimal solutions. Linear and nonlinear FVDs with different capacities have been designed for an eight-story shear-type building with bilinear elastic-plastic stiffness behavior under 20 real earthquakes. The results show that the optimal FVDs reduce the seismic response and fragility of the building, while limiting the dampers’ cost.https://nmce.kntu.ac.ir/article_160541_2ff712baeacd809d28b3bd9518fb8f72.pdfrisk-based optimal designmulti-objective optimizationnon-dominated genetic algorithm version ii (nsga-ii)fluid viscous damper (fvd) |
| spellingShingle | Mohtasham Mohebbi Sina Bakhshinezhad Seismic risk-based optimal design of fluid viscous dampers for seismically excited nonlinear structures Numerical Methods in Civil Engineering risk-based optimal design multi-objective optimization non-dominated genetic algorithm version ii (nsga-ii) fluid viscous damper (fvd) |
| title | Seismic risk-based optimal design of fluid viscous dampers for seismically excited nonlinear structures |
| title_full | Seismic risk-based optimal design of fluid viscous dampers for seismically excited nonlinear structures |
| title_fullStr | Seismic risk-based optimal design of fluid viscous dampers for seismically excited nonlinear structures |
| title_full_unstemmed | Seismic risk-based optimal design of fluid viscous dampers for seismically excited nonlinear structures |
| title_short | Seismic risk-based optimal design of fluid viscous dampers for seismically excited nonlinear structures |
| title_sort | seismic risk based optimal design of fluid viscous dampers for seismically excited nonlinear structures |
| topic | risk-based optimal design multi-objective optimization non-dominated genetic algorithm version ii (nsga-ii) fluid viscous damper (fvd) |
| url | https://nmce.kntu.ac.ir/article_160541_2ff712baeacd809d28b3bd9518fb8f72.pdf |
| work_keys_str_mv | AT mohtashammohebbi seismicriskbasedoptimaldesignoffluidviscousdampersforseismicallyexcitednonlinearstructures AT sinabakhshinezhad seismicriskbasedoptimaldesignoffluidviscousdampersforseismicallyexcitednonlinearstructures |