A hybrid frequency-temporal reduced-order method for nonlinear dynamics
| Autor: | A. Daby-Seesaram, A. Fau, P.-É. Charbonnel, D. Néron |
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| Přispěvatelé: | Laboratoire de Mécanique Paris-Saclay (LMPS), CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Ecole Normale Supérieure Paris-Saclay (ENS Paris Saclay), Laboratoire d'Etudes de Mécanique Sismique (EMSI), Service d'Etudes Mécaniques et Thermiques (SEMT), Département de Modélisation des Systèmes et Structures (DM2S), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Département de Modélisation des Systèmes et Structures (DM2S), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
PGD
LATIN Applied Mathematics Mechanical Engineering Aerospace Engineering Transient Dynamics Ocean Engineering Dynamics FFT Reduced-order model Damage Control and Systems Engineering [SPI.MECA.STRU]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Structural mechanics [physics.class-ph] LATIN-PGD Gibbs phenomenon Electrical and Electronic Engineering |
| Zdroj: | Nonlinear Dynamics Nonlinear Dynamics, 2023, ⟨10.1007/s11071-023-08513-8⟩ |
| ISSN: | 0924-090X 1573-269X |
| DOI: | 10.1007/s11071-023-08513-8⟩ |
| Popis: | International audience; Solving dynamics problem in the frequency domain gives significant advantages compared with solutions fully computed in the temporal domain, but history-dependent nonlinear behaviour is an obstacle to employ that strategy. A hybrid approach is proposed to solve the nonlinear behaviour in the temporal domain, while the mechanical equilibrium is solved using a frequency strategy coupled with model-order reduction methods. In order to employ the fast Fourier transform (FFT) robustly for the transient regime, artificial numerical damping is used. The reduced-order hybrid temporal-frequency approach is investigated for two- and three-dimensional applications; it appears as a robust and proficient technique to simulate structures under transient dynamic loadings until failure. |
| Databáze: | OpenAIRE |
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