Extended finite element method for three-dimensional large plasticity deformations on arbitrary interfaces

Khoei, A. R ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1016/j.cma.2007.10.006
  3. Publisher: 2008
  4. Abstract:
  5. In this paper, the extended finite element method is presented for large elasto-plastic deformation in 3D solid mechanics problems. The X-FEM computational algorithm is presented in the framework of Lagrangian description in order to model the arbitrary interfaces in large deformations. In X-FEM, the material interface is represented independently of element boundaries and the process is accomplished by partitioning the domain with several tetrahedral sub-elements whose Gauss points are used for integration of the domain of elements. The interface between two bodies is modeled by using the X-FEM technique and applying a modified level set enrichment function. In order to simulate the nonlinear behavior of materials, the Lagrangian plasticity formulation is coupled with the X-FEM technique. Finally, several numerical examples are analyzed to demonstrate the efficiency of the X-FEM technique in large plasticity deformations. © 2007 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Deformation ; Elastoplasticity ; Finite element method ; Three dimensional ; Elasto-plastic deformation ; Extended finite element method ; Lagrangian description ; Interfaces (materials) ; Deformation ; Elastoplasticity ; Finite element method ; Interfaces (materials) ; Three dimensional
  8. Source: Computer Methods in Applied Mechanics and Engineering ; Volume 197, Issue 9-12 , 2008 , Pages 1100-1114 ; 00457825 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0045782507004100