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Article Dans Une Revue Nonlinear Dynamics Année : 2023

A hybrid frequency-temporal reduced-order method for nonlinear dynamics

Résumé

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.
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Dates et versions

hal-04067181 , version 1 (21-05-2024)

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Alexandre Daby-Seesaram, Amélie Fau, Pierre-Étienne Charbonnel, David Néron. A hybrid frequency-temporal reduced-order method for nonlinear dynamics. Nonlinear Dynamics, 2023, 111, pp.13669-13689. ⟨10.1007/s11071-023-08513-8⟩. ⟨hal-04067181⟩
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