Computational modeling of particle deposition processes

Eduardo M. B. Campello¹

¹ Dept. Structural and Geotechnical Engineering, University of São Paulo

doi:10.20906/CPS/CILAMCE2017-0484

Resumo

This work presents a computational model for the simulation of industrial particle deposition processes. The approach is based on the discrete element method (DEM), whereby the deposition material is treated as a discrete medium that is targeted at a base substrate with varying process parameters. We use phenomenological models to describe the various forces involved at the level of the particle interactions. Particular attention is devoted to the modeling of particle contact and adhesion, since inter-particle bonding and agglomeration are crucial aspects in any such deposition methods. Examples of numerical simulations are shown to illustrate the potentialities of the scheme. We believe that consistent DEM models may be a useful tool for the simulation of many modern particle deposition processes, such as (but not limited to) additive manufacturing techniques, 3D printing methods, deposition of thermal and mechanical barrier coatings onto surfaces, thin films, and many others wherein matter is additively placed into shape.

Palavras-chave: Particles; Particle deposition; Discrete element method; Additive manufacturing; 3D printing processes