Modeling the interaction between densification mechanisms in powder compaction

S. J. Subramanian, P. Sofronis

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this paper a micromechanical model of the interaction between densification mechanisms in powder compaction is presented. It accounts for elastic and power-law creep deformation of the bulk material along with stress-driven diffusion along the interparticle contact areas and curvature-driven diffusion on the pore surfaces. The finite element method is used to obtain the time-dependent deformation of the powder aggregate under plane strain deformation conditions. To reduce the number of case calculations needed to analyze the process, important dimensionless parameters that measure the relative magnitude of the densification mechanisms are identified. The calculated densification rates of the compact are compared with those predicted by analytical models, and conclusions are drawn on the significance of including the interaction between the densifying mechanisms in powder compaction models.

Original languageEnglish
Pages (from-to)7899-7918
Number of pages20
JournalInternational Journal of Solids and Structures
Volume38
Issue number44-45
DOIs
Publication statusPublished - Oct 12 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

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