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The extended finite element method for large deformation ductile fracture problems with a non-local damage-plasticity model

Broumand, P ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1016/j.engfracmech.2013.10.002
  3. Publisher: 2013
  4. Abstract:
  5. An enriched-FEM technique is presented for the crack growth simulation in large deformation ductile fracture problems using a non-local damage-plasticity model in the framework of eXtended Finite Element Method (X-FEM). The Lemaitre damage-plasticity model is used to capture the material degradation effect, in which the non-locality is enforced by solving a Helmholtz type equation in combination with the governing equation of the system based on an operator-split technique. A convergence study is performed to investigate the performance of X-FEM technique in plasticity problems. The accuracy and effectiveness of proposed X-FEM damage-plasticity model are verified through several numerical examples
  6. Keywords:
  7. Crack propagation ; Ductile fracture ; Large X-FEM deformation ; Non-local damage-plasticity ; Crack growth simulation ; Damage-plasticity models ; Extended finite element method ; Fracture problems ; Governing equations ; Helmholtz-type equations ; Material degradation ; Nonlocal ; Cracks ; Plasticity ; Plasticity testing ; Deformation
  8. Source: Engineering Fracture Mechanics ; Volume 112-113 , 2013 , Pages 97-125 ; 00137944 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0013794413003202