Table of Contents
Metals, Volume 8, Issue 12 (December 2018)
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Cover Story (view full-size image) The numerical modeling process of sheet metal forming is performed on fully coupled damage [...] Read more. The numerical modeling process of sheet metal forming is performed on fully coupled damage constitutive equations and the remeshing procedure. Based on CDM, an isotropic damage model coupled with the Johnson–Cook flow law is proposed to satisfy the thermodynamic and damage requirements. A 3D adaptive remeshing scheme using linear tetrahedral FE is developed in order to simulate the large plastic deformations and crack propagation that occur after damage. Four examples are proposed to prove that the numerical methodology is an advanced and reliable tool to simulate various sheet metal forming processes in order to avoid damage in incremental forming, deep-drawing, and multi-point drawing, or to enhance damage in cutting operations. The quantitative effects of damage and remeshing on the metal forming are studied, and a qualitative comparison with some available experimental data is given. View this paper.