Observability and identification of damage-healing hysteretic model
Recent advances in the development of self-healing materials have highlighted the need for accurate modelling of the self-healing mechanism. To this end, the damage-healing hysteretic model is derived to describe the nonlinear behaviour of structures with self-healing materials by introducing additi...
| Main Authors: | , , , |
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| Format: | Conference item |
| Language: | English |
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International Association for Structural Control and Monitoring
2018
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| _version_ | 1826283257175474176 |
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| author | Shi, X Chatzis, MN Triantafyllou, SP Williams, MS |
| author_facet | Shi, X Chatzis, MN Triantafyllou, SP Williams, MS |
| author_sort | Shi, X |
| collection | OXFORD |
| description | Recent advances in the development of self-healing materials have highlighted the need for accurate modelling of the self-healing mechanism. To this end, the damage-healing hysteretic model is derived to describe the nonlinear behaviour of structures with self-healing materials by introducing additional operators to the Bouc-Wen model. When the model is used as a representation of a real structure, it is important to precisely identify the model parameters to reduce the pertaining uncertainties. In this work, the nonlinear observability methods and the concept of non-smooth observability are utilized to analyze the observability of the model. The Unscented Kalman filter (UKF) and the recently suggested Discontinuous Unscented Kalman filter (DUKF) are implemented to identify the model, and the superior performance of the DUKF for parametric identification of non-smooth systems is highlighted. |
| first_indexed | 2024-03-07T00:56:11Z |
| format | Conference item |
| id | oxford-uuid:882b63f2-0af9-4580-b7ea-6c1bfcb66d2a |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:56:11Z |
| publishDate | 2018 |
| publisher | International Association for Structural Control and Monitoring |
| record_format | dspace |
| spelling | oxford-uuid:882b63f2-0af9-4580-b7ea-6c1bfcb66d2a2022-03-26T22:15:21ZObservability and identification of damage-healing hysteretic modelConference itemhttp://purl.org/coar/resource_type/c_5794uuid:882b63f2-0af9-4580-b7ea-6c1bfcb66d2aEnglishSymplectic ElementsInternational Association for Structural Control and Monitoring2018Shi, XChatzis, MNTriantafyllou, SPWilliams, MSRecent advances in the development of self-healing materials have highlighted the need for accurate modelling of the self-healing mechanism. To this end, the damage-healing hysteretic model is derived to describe the nonlinear behaviour of structures with self-healing materials by introducing additional operators to the Bouc-Wen model. When the model is used as a representation of a real structure, it is important to precisely identify the model parameters to reduce the pertaining uncertainties. In this work, the nonlinear observability methods and the concept of non-smooth observability are utilized to analyze the observability of the model. The Unscented Kalman filter (UKF) and the recently suggested Discontinuous Unscented Kalman filter (DUKF) are implemented to identify the model, and the superior performance of the DUKF for parametric identification of non-smooth systems is highlighted. |
| spellingShingle | Shi, X Chatzis, MN Triantafyllou, SP Williams, MS Observability and identification of damage-healing hysteretic model |
| title | Observability and identification of damage-healing hysteretic model |
| title_full | Observability and identification of damage-healing hysteretic model |
| title_fullStr | Observability and identification of damage-healing hysteretic model |
| title_full_unstemmed | Observability and identification of damage-healing hysteretic model |
| title_short | Observability and identification of damage-healing hysteretic model |
| title_sort | observability and identification of damage healing hysteretic model |
| work_keys_str_mv | AT shix observabilityandidentificationofdamagehealinghystereticmodel AT chatzismn observabilityandidentificationofdamagehealinghystereticmodel AT triantafyllousp observabilityandidentificationofdamagehealinghystereticmodel AT williamsms observabilityandidentificationofdamagehealinghystereticmodel |