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Thermo-mechanical Behavior of Confined Granular Systems

  • Gülşad KüçükEmail author
  • Marcial Gonzalez
  • Alberto M. Cuitiño
Chapter
Part of the Lecture Notes in Applied and Computational Mechanics book series (LNACM, volume 81)

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.

Keywords

Discrete Element Method Effective Thermal Conductivity Granular Medium Granular System Effective Medium Theory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work has been partially supported by U.S. Army ARDEC grant under the project titled as: Multifunctional Nanomaterials: Processing, Properties, and Applications. The authors would also like to acknowledge the support provided by the National Science Foundation Engineering Research Center for Structured Organic Particle Systems (C-SOPS).

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Gülşad Küçük
    • 1
    Email author
  • Marcial Gonzalez
    • 2
  • Alberto M. Cuitiño
    • 1
  1. 1.Department of Mechanical and Aerospace EngineeringRutgers UniversityPiscatawayUSA
  2. 2.School of Mechanical EngineeringPurdue UniversityWest LafayetteUSA

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