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Conference Papers Year : 2023

Identification of NNM using sliding window POD analysis

Simon Clément
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Sergio Bellizzi
Bruno Cochelin
Guillaume Ricciardi
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In this paper, a method combining the Proper Orthogonal Decomposition (POD) and a time-frequency analysis (TFA) is presented. The POD method is a tool adapted to the study of multi-degrees of freedom systems, which can give some insight of the behaviour of complex nonlinear systems, whereas TFA is suitable for scalar signal with multi-frequency components. The method presented here is of principal interest in the case of swept-sine excitation of complex multi-DOF systems. The method can be used to extract the Non-linear Normal Modes (NNM). It is illustrated on a 3-degrees-of-freedom system.
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hal-01040701 , version 1 (28-03-2023)


  • HAL Id : hal-01040701 , version 1


Simon Clément, Sergio Bellizzi, Bruno Cochelin, Guillaume Ricciardi. Identification of NNM using sliding window POD analysis. 8th European Nonlinear Dynamics Conference, Jul 2014, Vienna, Austria. CR-ROM(2 p.). ⟨hal-01040701⟩
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