Towards 3D Simulation Of Sintering Processes
Author(s)
S. Bordère, D. Bernard, S. Vincent & J.-P. Caltagirone
Abstract
The Monte Carlo approach based on minimisation of a potential including
interface and volume energies has been implemented in the framework of a
Eulerian interface tracking method in order to deal with 3D sintering of complex
powder compacts. First applied to the unique spherical particle system, these
new developments lead to a surface tension-induced pressure close to that
theoretically given by Laplace’s law. The accuracy of this result is largely
improved compared to those given by a classical fluid mechanics computation
using the front tracking method. Our progress towards 3D modelling of sintering
for realistic systems is illustrated by the computed stress gradients induced by
surface curvature gradients within a small set of particles extracted from X-ray
computed micro-tomography images of a real sample.
Keywords: stochastic methods, ceramics, image analysis.
1 Introduction
As regards the recent studies in modelling sintering processes [1–4], one can
notice that it still remains difficult to deal with realistic particle arrangements
systems. In fact, modelling of polycrystalline material sintering has only been
handled in 2D [1, 2]. The only approach which would be powerful enough to
overcome that difficulty is the phase field approach which is based on a diffuse
definition of the interface [2]. Applied to 3D complex microstructure evolution
only involving grain growth [5], no example of 3D many particle densification
has up until now been shown. In the case of amorphous particles sintering, only
2 [6, 7] or 3 particles were handled [8]. Apart from these deterministic methods,
the Monte Carlo simulations based on the Potts model have exhibited 3D
Keywords
stochastic methods, ceramics, image analysis.
Related Book
Other papers in this volume
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