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Article Dans Une Revue Computational Mechanics Année : 2022

Global-Local non intrusive analysis with robin parameters: application to plastic hardening behavior and crack propagation in 2D and 3D structures

Ignacio Fuenzalida-Henriquez
Paul Oumaziz
Jorge Hinojosa
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Résumé

The global/local analysis allows to embed a specific local zone of interest with a different behaviour in a global coarse model. In this local model, fine meshes are usually used to model some structural details and potentially non-linear behaviours, such as plastic hardening and crack propagation. The standard global/local approach can be observed as a Dirichlet-Neumann iterative algorithm where a Dirichlet problem on the local model and a Neumann problem on the global one are solved successively. This paper proposes a new approach for the global/local framework as Robin parameters are considered on both local and global models to obtain more flexibility and improvement for convergence. Particularly, Robin parameters are obtained using a pre-defined strip of elements and the results are later improved by means of single-objective optimization, minimizing the number of iterations to achieve convergence. This improvement is illustrated for cracked domains and plastic hardening in 2D problems and 3D elements within a non-intrusive framework, allowing the usage of commercial finite element software along with open-source research finite element software.
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Dates et versions

hal-03613766 , version 1 (18-03-2022)

Identifiants

Citer

Ignacio Fuenzalida-Henriquez, Paul Oumaziz, Emilio Castillo-Ibarra, Jorge Hinojosa. Global-Local non intrusive analysis with robin parameters: application to plastic hardening behavior and crack propagation in 2D and 3D structures. Computational Mechanics, inPress, ⟨10.1007/s00466-021-02124-z⟩. ⟨hal-03613766⟩
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