Evaluation of the dynamic response of structures using auxetic-type base isolation
Base isolation is a widely-used method used to minimise the harmful effects of earthquakes on buildings. Unlike a fixed base building, a building with a base isolation system essentially decouples the superstructure from the substructure resting on the ground. Then, during earthquakes, the superstru...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2020-01-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2524 |
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| author | Georgios Drosopoulos Preyolin Naidoo |
| author_facet | Georgios Drosopoulos Preyolin Naidoo |
| author_sort | Georgios Drosopoulos |
| collection | DOAJ |
| description | Base isolation is a widely-used method used to minimise the harmful effects of earthquakes on buildings. Unlike a fixed base building, a building with a base isolation system essentially decouples the superstructure from the substructure resting on the ground. Then, during earthquakes, the superstructure’s relative displacement is significantly reduced, minimising the structural damage. Auxetics, which are materials with a negative Poisson’s ratio, are known for possessing properties such as high energy absorption. Based on the energy absorbing capabilities of auxetic materials, it is proposed that incorporating them into base isolation structures would positively impact on the performance of the system. Therefore, the article aims to investigate the response of structures under seismic loading incorporating re-entrant hexagon layers into the base isolation system. This is assessed by defining and numerically testing the system using finite element analysis. The models developed for this study represent multi-storey structural steel frames combined with fixed base, conventional lead-rubber bearing and auxetic composite base isolation. Differences in the response obtained from the mentioned systems are highlighted. Results indicate that the auxetic base isolation may improve the dynamic response of structures, although a unique performance is not recorded. |
| format | Article |
| id | doaj-art-25a0e3d2cbee4bb99b3d401be45ed49e |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-25a0e3d2cbee4bb99b3d401be45ed49e2025-01-02T20:55:47ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932020-01-011451527010.3221/IGF-ESIS.51.052524Evaluation of the dynamic response of structures using auxetic-type base isolationGeorgios Drosopoulos0Preyolin Naidoo1Structural Engineering and Computational Mechanics Group, Discipline of Civil Engineering, University of KwaZulu-Natal, Durban, South AfricaStructural Engineering and Computational Mechanics Group, Discipline of Civil Engineering, University of KwaZulu-Natal, Durban, South AfricaBase isolation is a widely-used method used to minimise the harmful effects of earthquakes on buildings. Unlike a fixed base building, a building with a base isolation system essentially decouples the superstructure from the substructure resting on the ground. Then, during earthquakes, the superstructure’s relative displacement is significantly reduced, minimising the structural damage. Auxetics, which are materials with a negative Poisson’s ratio, are known for possessing properties such as high energy absorption. Based on the energy absorbing capabilities of auxetic materials, it is proposed that incorporating them into base isolation structures would positively impact on the performance of the system. Therefore, the article aims to investigate the response of structures under seismic loading incorporating re-entrant hexagon layers into the base isolation system. This is assessed by defining and numerically testing the system using finite element analysis. The models developed for this study represent multi-storey structural steel frames combined with fixed base, conventional lead-rubber bearing and auxetic composite base isolation. Differences in the response obtained from the mentioned systems are highlighted. Results indicate that the auxetic base isolation may improve the dynamic response of structures, although a unique performance is not recorded.https://www.fracturae.com/index.php/fis/article/view/2524auxetic materialsseismic actionsbase isolationfinite element analysisstructural damage |
| spellingShingle | Georgios Drosopoulos Preyolin Naidoo Evaluation of the dynamic response of structures using auxetic-type base isolation Fracture and Structural Integrity auxetic materials seismic actions base isolation finite element analysis structural damage |
| title | Evaluation of the dynamic response of structures using auxetic-type base isolation |
| title_full | Evaluation of the dynamic response of structures using auxetic-type base isolation |
| title_fullStr | Evaluation of the dynamic response of structures using auxetic-type base isolation |
| title_full_unstemmed | Evaluation of the dynamic response of structures using auxetic-type base isolation |
| title_short | Evaluation of the dynamic response of structures using auxetic-type base isolation |
| title_sort | evaluation of the dynamic response of structures using auxetic type base isolation |
| topic | auxetic materials seismic actions base isolation finite element analysis structural damage |
| url | https://www.fracturae.com/index.php/fis/article/view/2524 |
| work_keys_str_mv | AT georgiosdrosopoulos evaluationofthedynamicresponseofstructuresusingauxetictypebaseisolation AT preyolinnaidoo evaluationofthedynamicresponseofstructuresusingauxetictypebaseisolation |