Effective thermal expansion property of consolidated granular materials

Gülşad S. Küçük, Marcial Gonzalez, Alberto M. Cuitiño

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Thermally-assisted compaction of granular materials is of keen interest in many engineering applications. A proper estimation of the material behavior of compacted granular materials is contingent upon the knowledge of microstructure formation, which is highly dependent on the bulk material properties and processing conditions, during the deformation stage. Originating from the pair interactions between particles, the macroscopic properties are obtained using various homogenization techniques and postulating continuum constitutive laws. While pioneers in this field have laid fundamental groundwork regarding effective medium descriptions, there exists a discrepancy between discrete and continuum level solutions. In our previous work, we elaborated a Particle Mechanics Approach (PMA) that integrates thermal contact and Hertzian deformation models to understand the thermo-mechanically-coupled consolidation problem. We also considered the analogous problem from the perspective of the conventional Continuum Mechanics Approach (CMA). In this study, following the multi-scale modeling framework, we propose an effective thermal expansion coefficient for the thermally-assisted compaction of granular materials.

Original languageEnglish (US)
Article number1289
JournalMaterials
Volume10
Issue number11
DOIs
StatePublished - Nov 1 2017

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Keywords

  • Contact mechanics.
  • Effective thermal expansion coefficient.
  • Granular materials;particle mechanics.
  • Thermally-assisted compaction
  • Thermo-mechanical coupling.

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