Computational Mesoscale Modeling and Homogenization of Liquid-Phase Sintering of Particle Agglomerates

Authors

  • M. Öhman
  • K. Runesson
  • F. Larsson

Abstract

Liquid phase sintering of particle agglomerates is simulated as the viscous deformation due to particle-particle contact, whereby the single driving force is the surface tension on the particle/pore interface. Particles are modeled as purely viscous fluids (with no elasticity). Computational homogenization is adopted for the RVE with Dirichlet boundary conditions. A surface motion algorithm was developed that requires complete remeshing of the FE-mesh based on a maximum deformation criterion. Since the particles are intrinsically incompressible, the macroscopic compressibility is determined from shrinking porosity in the substructure. The numerical examples include free sintering of an RVE and a fully coupled FE2-simulation of a specimen with inhomogeneous initial distribution of porosity.

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Published

2019-07-04

How to Cite

Öhman, M., Runesson, K. and Larsson, F. (2019) “Computational Mesoscale Modeling and Homogenization of Liquid-Phase Sintering of Particle Agglomerates”, Technische Mechanik - European Journal of Engineering Mechanics, 32(2-5), pp. 463–483. Available at: https://journals.ub.ovgu.de/index.php/techmech/article/view/738 (Accessed: 29 March 2024).

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