Effects of Internal Resonance and Damping on Koopman Modes
Fuente:
arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | |
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| _version_ | 1866911938760409088 |
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| author | Das, Rahul Bajaj, Anil K. Gupta, Sayan |
| author_facet | Das, Rahul Bajaj, Anil K. Gupta, Sayan |
| contents | This study investigates the nonlinear normal modes (NNMs) of a system comprising of two coupled Duffing oscillators, with one oscillator being grounded and with the coupling being both linear and nonlinear. The study utilizes the eigenfunctions of the Koopman operator and validates their connection with the Shaw-Piere invariant manifold framework for NNMs. Furthermore, the study delves into the impact of internal resonance and dissipation on the accuracy of this framework by defining a continuous quantitative measure for internal resonance. The applicability and robustness of the framework for the systems which are very similar qualitatively to that of an ENO, are also observed and discussed about the limitations of the approximation technique. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_00854 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Effects of Internal Resonance and Damping on Koopman Modes Das, Rahul Bajaj, Anil K. Gupta, Sayan Chaotic Dynamics Dynamical Systems This study investigates the nonlinear normal modes (NNMs) of a system comprising of two coupled Duffing oscillators, with one oscillator being grounded and with the coupling being both linear and nonlinear. The study utilizes the eigenfunctions of the Koopman operator and validates their connection with the Shaw-Piere invariant manifold framework for NNMs. Furthermore, the study delves into the impact of internal resonance and dissipation on the accuracy of this framework by defining a continuous quantitative measure for internal resonance. The applicability and robustness of the framework for the systems which are very similar qualitatively to that of an ENO, are also observed and discussed about the limitations of the approximation technique. |
| title | Effects of Internal Resonance and Damping on Koopman Modes |
| topic | Chaotic Dynamics Dynamical Systems |
| url | https://arxiv.org/abs/2407.00854 |