Finite element modeling of Hot Isostatic Pressing at the mesoscopic scale

In terms of microscale modeling, the present project aims at developing advanced numerical techniques for taking into account, in 2D/3D simulation context, all the key physical phenomena that take place during HIP process from start to finish. Within a parallel computing context, simulations will be firstly based on a levelset interface capturing technique in a FE framework and Eulerian
formalism. Combined with an anisotropic mesh adaptation strategy, this numerical approach will be used to describe with accuracy the granular packing geometry, particle interface evolution, grain interface evolution but also the second phase particle populations and their evolution. Such simulations in a context of a new front-tracking methodology will also be considered. The developments will be validated thanks to pre-existing experimental and numerical data concerning the evolution of particle/grain boundary interfaces available in CEA Grenoble.

These numerical developments will also be integrated in an extension of the DIGIMU® software dedicated to HIP process modeling at the mesoscopic scale.