pellets

Particle and powder mechanics

Published: 23 August 2011

The scientific objective for all powder and particle projects are to contribute to the understanding the physical phenomena involved during the actual process. This is achieved by development of experimental characterization methods, establishment of material models and numerically performing parametric studies of the process. We are using the finite element method (FEM) and the smoothed particle hydrodynamic (SPH) method in most of our applications.

Powder processes are used to produce components from many types of powder compositions and for a wide range of applications. Most processes consist of filling a die, pressing the powder with a appropriate kinematics then ejecting the green part before sintering. In this context, computer modelling of compaction is a practical tool for industry to assist the control of the process. Our research covers modelling and simulation of powder behaviour from loose powder up to ultra high pressure (>10 GPa) and high velocity and high strain rate.

Regarding particle mechanics application most of our research is related to our mining industry. It could be to model a ball charge and its interaction with the structure in a milling process. Or iron ore pellets flow in a silo coupled to the stress field in a single pellet.

Current projects