Mechanism Analysis and Parameter Optimization of Mega-Sub-Isolation System
The equation of motion of mega-sub-isolation system is established. The working mechanism of the mega-sub-isolation system is obtained by systematically investigating its dynamic characteristics corresponding to various structural parameters. Considering the number and location of the isolated subst...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2016/2605839 |
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| _version_ | 1832564130803875840 |
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| author | Xiangxiu Li Ping Tan Xiaojun Li Aiwen Liu |
| author_facet | Xiangxiu Li Ping Tan Xiaojun Li Aiwen Liu |
| author_sort | Xiangxiu Li |
| collection | DOAJ |
| description | The equation of motion of mega-sub-isolation system is established. The working mechanism of the mega-sub-isolation system is obtained by systematically investigating its dynamic characteristics corresponding to various structural parameters. Considering the number and location of the isolated substructures, a procedure to optimally design the isolator parameters of the mega-sub-isolation system is put forward based on the genetic algorithm with base shear as the optimization objective. The influence of the number and locations of isolated substructures on the control performance of mega-sub-isolation system has also been investigated from the perspective of energy. Results show that, with increase in substructure mass, the working mechanism of the mega-sub-isolation system is changed from tuned vibration absorber and energy dissipation to seismic isolation. The locations of the isolated substructures have little influence on the optimal frequency ratio but have great influence on the optimal damping ratio, while the number of isolated substructures shows great impact on both the optimal frequency ratio and damping ratio. When the number of the isolated substructures is determined, the higher the isolated substructures, the more the energy that will be consumed by the isolation devices, and with the increase of the number of isolated substructures, the better control performance can be achieved. |
| format | Article |
| id | doaj-art-82eb9b3b43ec4f789d3dabefdfc75c22 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-82eb9b3b43ec4f789d3dabefdfc75c222025-02-03T01:11:40ZengWileyShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/26058392605839Mechanism Analysis and Parameter Optimization of Mega-Sub-Isolation SystemXiangxiu Li0Ping Tan1Xiaojun Li2Aiwen Liu3Institute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaEarthquake Engineering Research & Test Center, Guangzhou University, Guangzhou 510405, ChinaInstitute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaInstitute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaThe equation of motion of mega-sub-isolation system is established. The working mechanism of the mega-sub-isolation system is obtained by systematically investigating its dynamic characteristics corresponding to various structural parameters. Considering the number and location of the isolated substructures, a procedure to optimally design the isolator parameters of the mega-sub-isolation system is put forward based on the genetic algorithm with base shear as the optimization objective. The influence of the number and locations of isolated substructures on the control performance of mega-sub-isolation system has also been investigated from the perspective of energy. Results show that, with increase in substructure mass, the working mechanism of the mega-sub-isolation system is changed from tuned vibration absorber and energy dissipation to seismic isolation. The locations of the isolated substructures have little influence on the optimal frequency ratio but have great influence on the optimal damping ratio, while the number of isolated substructures shows great impact on both the optimal frequency ratio and damping ratio. When the number of the isolated substructures is determined, the higher the isolated substructures, the more the energy that will be consumed by the isolation devices, and with the increase of the number of isolated substructures, the better control performance can be achieved.http://dx.doi.org/10.1155/2016/2605839 |
| spellingShingle | Xiangxiu Li Ping Tan Xiaojun Li Aiwen Liu Mechanism Analysis and Parameter Optimization of Mega-Sub-Isolation System Shock and Vibration |
| title | Mechanism Analysis and Parameter Optimization of Mega-Sub-Isolation System |
| title_full | Mechanism Analysis and Parameter Optimization of Mega-Sub-Isolation System |
| title_fullStr | Mechanism Analysis and Parameter Optimization of Mega-Sub-Isolation System |
| title_full_unstemmed | Mechanism Analysis and Parameter Optimization of Mega-Sub-Isolation System |
| title_short | Mechanism Analysis and Parameter Optimization of Mega-Sub-Isolation System |
| title_sort | mechanism analysis and parameter optimization of mega sub isolation system |
| url | http://dx.doi.org/10.1155/2016/2605839 |
| work_keys_str_mv | AT xiangxiuli mechanismanalysisandparameteroptimizationofmegasubisolationsystem AT pingtan mechanismanalysisandparameteroptimizationofmegasubisolationsystem AT xiaojunli mechanismanalysisandparameteroptimizationofmegasubisolationsystem AT aiwenliu mechanismanalysisandparameteroptimizationofmegasubisolationsystem |