Open Access

ARTICLE

Computational Simulation of Localized Damage by Finite Element Remeshing based on Bubble Packing Method

by Soon Wan Chung¹, Yoo Jin Choi¹, Seung Jo Kim¹

1 Department of Aerospace Engineering, Seoul National University, San 56-1, Shinlim-dong, Kwanak-ku, Seoul, 151-742, Korea.

Computer Modeling in Engineering & Sciences 2003, 4(6), 707-718. https://doi.org/10.3970/cmes.2003.004.707

Abstract

In this paper, an automatic finite element remeshing algorithm based on the bubble packing method is utilized for the purpose of numerical simulations of localized damage, because fine meshes are needed to represent the gradually concentrated damage. The bubble packing method introduces two parameters that easily control the remeshing criterion and the new mesh size. The refined area is determined by \textit {a posteriori} error estimation utilizing the value obtained from Superconvergent Patch Recovery. The isotropic ductile damage theory, founded on continuum damage mechanics, is used for this damage analysis. It was successfully shown in the numerical examples (upsetting and extrusion problems) that the remeshing algorithm generates fine and regular meshes for the regions with distorted meshes and that the damage is localized in the refined zone.

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Keywords

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