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Numerical simulation of metal forming processes with 3D adaptive Remeshing strategy based on a posteriori error estimation

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Abstract

In this work, a fully automated adaptive remeshing strategy, based on a tetrahedral element for 3D metal forming processes, was proposed in order to solve problems associated with the severe mesh distortion that occurs during the computation. The main idea is to use the h-type adaptive mesh in combination with an a-posteriori error estimator measured (by the energy norm) on each finite elements to locally control the mesh modification-as-needed. Once a new mesh is generated, all history-dependent variables must be carefully transferred between subsequent meshes. Therefore, several transfer techniques are described and compared. A special attention is given to restore the local mechanical equilibrium of the system with a new methodology. After presenting the necessary adaptive remeshing steps, some 3D analytic and numerical results using the proposed adaptive strategy are given to demonstrate the capabilities of the proposed equilibrated approach and to illustrate some practical characteristics of our remeshing process.

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Authors and Affiliations

  1. LAMPA, Arts et Métiers, 2 Boulevard du Ronceray, 49000, Angers, France

    Bessam Zeramdini, Camille Robert & Guenael Germain

  2. Institut Clement Ader, Ecole Nationale Supérieure des Mines d’Albi Mines d’Albi-Carmaux, Campus Jarlard, 81013, Albi, France

    Thomas Pottier

Authors
  1. Bessam Zeramdini
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  2. Camille Robert
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  3. Guenael Germain
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  4. Thomas Pottier
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Correspondence to Bessam Zeramdini.

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• Adaptive mesh strategy is developed for 3D metal material processes.

• Different methods recovery techniques are compared.

• Equilibrium method for dynamic explicit scheme is proposed.

• Results are compared with experiments test.

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Zeramdini, B., Robert, C., Germain, G. et al. Numerical simulation of metal forming processes with 3D adaptive Remeshing strategy based on a posteriori error estimation. Int J Mater Form 12, 411–428 (2019). https://doi.org/10.1007/s12289-018-1425-4

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  • DOI: https://doi.org/10.1007/s12289-018-1425-4

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