Simulation of necking using a damage coupled finite element method

Chak Yin Tang, J. P. Fan, T. C. Lee

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)

Abstract

Necking is a strain localization phenomenon that can cause catastrophic fracture in metal forming. Therefore, the prediction of necking is important. In the present work, an elasto-plastic constitutive equation accounting for isotropic hardening coupled with damage is implemented in the finite element code ABAQUS. A damage variable, that provides a mesoscopic description of material degradation, is used to quantify the degree of damage due to excessive strain. Using the implicit integration scheme, a cylindrical rod loaded under uniaxial tension is successfully simulated by the finite element code with a specially designed user-defined material subroutine (UMAT). In addition, the distribution of damage caused by the deformation is computed.
Original languageEnglish
Pages (from-to)510-513
Number of pages4
JournalJournal of Materials Processing Technology
Volume139
Issue number1-3 SPEC
DOIs
Publication statusPublished - 20 Aug 2003

Keywords

  • Damage
  • Finite element simulation
  • Necking
  • Strain localization

ASJC Scopus subject areas

  • Ceramics and Composites
  • Modelling and Simulation
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

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