Formulation to control mesh distortion in finite element simulation of 3D metal-forming problems 2007-01-2637
Finite element method simulation of large deformation processes as metal forming has to deal with the problem of high mesh distortion during the analysis. This distortion damages the quality of results or even makes the simulation impossible. The Arbitrary Lagrangian Eulerian (ALE) Formulation proposed in this work consists of relocating mesh nodes at each time step during the simulation. Mesh motion is performed by new nodal relocation methods, developed for eight-node hexahedral elements, that take into account geometric aspects and plastic strain results to avoid distortion. These relocation methods can move internal and boundary nodes improving and concentrating the mesh in critical zones. They are also applied for contact problems. The work presents the technique proposed and results of 3D problems that show the method efficiency.
Citation: Aymone, J. and Teixeira, F., "Formulation to control mesh distortion in finite element simulation of 3D metal-forming problems," SAE Technical Paper 2007-01-2637, 2007, https://doi.org/10.4271/2007-01-2637. Download Citation
Author(s):
José Luís Farinatti Aymone, Fábio Gonçalves Teixeira
Affiliated:
Virtual Design Research Team, Post-Graduation Program in Design, Federal University of Rio Grande do Sul
Pages: 12
Event:
SAE Brasil 2007 Congress and Exhibit
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Simulation and modeling
Forming
Plastics
Metals
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