Loading...

A three-invariant cap plasticity model with kinematic hardening rule for powder materials

Khoei, A. R ; Sharif University of Technology | 2007

295 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.jmatprotec.2006.11.058
  3. Publisher: 2007
  4. Abstract:
  5. In this paper, a three-invariant cap plasticity with a kinematic hardening rule is presented for powder materials. A general form is developed for the cap plasticity which can be compared with some common double-surface plasticity models proposed for powders in literature. The constitutive elasto-plastic matrix and its components are derived based on the definition of yield surface, hardening parameter and non-linear elastic behavior, as function of relative density of powder. The procedure for determination of powder parameters is described. Finally, the applicability of the proposed model is demonstrated in numerical simulation of triaxial and confining pressure tests. © 2006 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Computer simulation ; Elastoplasticity ; Hardening ; Inverse kinematics ; Parameter estimation ; Powders ; Cap model ; Kinematic hardening ; Powder compaction ; Three-invariant plasticity ; Plasticity
  8. Source: Journal of Materials Processing Technology ; Volume 187-188 , 2007 , Pages 680-684 ; 09240136 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0924013606010028?via%3Dihub