PAREDES GOYES Brayan

Research activities

Discrete Element Method (DEM) analysis of constrained powder sintering
This doctoral thesis will allow us to better understand constrained sintering using numerical simulations. Simulations using the discrete element method (DEM) have been developed at SIMaP. In the model, each particle interacts with its neighbours through appropriate contact laws specially designed for high temperature contacts. Local constraints and defect evolution will be simulated with realistic microstructures and grain size distributions. For example, the importance of the initial stacking of particles, with its intrinsically heterogeneous structure, will be explicitly taken into account.
The work will be mainly numerical. The doctoral student will develop the internal DEM code dp3D and use it to perform sintering simulations. In addition, the proposed doctoral thesis will integrate the initial microstructures obtained using nanotomography (ESR14, another doctoral thesis proposed in Mathegram) into DEM simulations as an initial condition for realistic modelling and evaluation.

Keywords: sintering, powders, discrete simulations