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An arbitrary lagrangian-eulerian technique for plasticity of pressure-sensitive material with reference to powder forming processes

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

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  1. Type of Document: Article
  2. Publisher: Hanrimwon Publishing Co , 2008
  3. Abstract:
  4. In this paper, an application of arbitrary Lagrangian-Eulerian method is presented in plasticity behavior of pressure-sensitive material, with special reference to large deformation analysis of powder compaction process. In ALE technique, the convective term is used to reflect the relative motion between the mesh and the material. The convection term is neglected in the material phase, which is identical to a time-step in a standard Lagrangian analysis. The stresses and plastic internal variables are converted to account the relative mesh-material motion in the convection phase. The ALE formulation is then performed within the framework of a three-invariant cap plasticity model in order to predict the non-uniform density distribution during the large deformation of powder die pressing
  5. Keywords:
  6. Deformation ; Lagrange multipliers ; Plasticity ; Arbitrary Lagrangian Eulerian ; Arbitrary Lagrangian Eulerian method ; Cap plasticity model ; Internal variables ; Lagrangian analysis ; Large deformation analysis ; Non-uniform Density ; Pressure sensitive materials ; Materials
  7. Source: 9th International Conference on Technology of Plasticity, ICTP 2008, Gyeongju, 7 September 2008 through 11 September 2008 ; 2008 , Pages 1825-1830