Thermo-mechanical behavior of confined granular systems

Gülşad Küçük, Marcial Gonzalez, Alberto M. Cuitiño

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

We present a mathematical formulation that integrates thermal contact and Hertzian deformation models to understand the thermo-mechanical behavior of consolidated granular systems. The model assumes quasi-static equilibrium and quasi-steady heat conduction conditions that are appropriate for many thermally-assisted manufacturing processes. We perform a parametric study that explores the effect of applied thermal and mechanical loads, and of particles’ thermal expansion. The nonlinearity of the multi-physics problem reveals that thermo-mechanical coupling enhances the effective thermal conductivity and mechanical stiffness by directly impacting the interrelation between contact conductance and overlapping between the particles. Alterations in temperature profiles and displacements of particles are significant for materials with higher thermal expansion coefficients. In this regards, it is worth noting that the results of the proposed thermo-mechanical model depart from those of conventional compaction models based on a continuum mechanics description.

Original languageEnglish (US)
Title of host publicationInnovative Numerical Approaches for Multi-Field and Multi-Scale Problems - In Honor of Michael Ortiz’s 60th Birthday
EditorsKerstin Weinberg, Anna Pandolfi
PublisherSpringer Verlag
Pages41-57
Number of pages17
ISBN (Print)9783319390215
DOIs
StatePublished - 2016
EventInternational symposium on Innovative numerical approaches for materials and structures in multi-field and multi-scale problems, 2014 - Siegen, Germany
Duration: Sep 1 2014Sep 4 2014

Publication series

NameLecture Notes in Applied and Computational Mechanics
Volume81
ISSN (Print)1613-7736

Other

OtherInternational symposium on Innovative numerical approaches for materials and structures in multi-field and multi-scale problems, 2014
Country/TerritoryGermany
CitySiegen
Period9/1/149/4/14

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Computational Theory and Mathematics

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