Multi-level A Priori Hyper-Reduction of mechanical models involving internal variablesReport as inadecuate




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1 MAT - Centre des Matériaux

Abstract : This paper concerns the adaptation of reduced-order models during simulations of series of elastoviscoplastic problems. In continuation with previous works, this paper aimed at extending the A Priori Hyper-Reduction method APHR method for nonlinear thermal problems to nonlinear mechanical problems involving internal variables. This method is an a priori approach because full incremental responses of detailed models are not forecasted in order to build reduced-order models. The recent extension of the Hyper-Reduction method to reduction of mechanical models involving internal variables makes possible the reduction of degrees of freedom and the reduction of integration points. A multi-level formulation is introduced to focus on the capability of the method to perform efficient parallel computations to adapt reduced-order models.

Keywords : APHR method POD Parallel computing FETI Domain decomposition Viscoplasticity





Author: David Ryckelynck - Djamel Missoum-Benziane -

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



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