A global-local probabilistic approach for reduced-order modeling adapted to the low- and mid-frequency structural dynamicsReport as inadecuate




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1 MSME - Laboratoire de Modélisation et Simulation Multi Echelle

Abstract : The research presented here is devoted to the construction of a probabilistic reduced-order computational model adapted to the low- and mid-frequency structural dynamics. The methodology presented here is based on a global-lo\-cal separation of the space of admissible displacements by solving two separated eigenvalue problems in which the kinetic energy is modified. This paper presents a general framework for constructing the modified kinetic energy by introducing classes of kinematic reductions. The global-local separation allows the construction of a probabilistic model of uncertainties for which the fluctuations of the global displacements and the fluctuations of the local displacements can be controlled separately.

Keywords : Low-frequency range Mid-frequency range High modal density Uncertainty quantification





Author: Anas Batou -

Source: https://hal.archives-ouvertes.fr/



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