A 2D hysteretic DEM model for arbitrarily shaped polygonal particles

A 2D hysteretic Discrete Element Method (DEM) model is developed for simulating the flow of food particles, specifically with multi-material 3D printing processes in mind. Particles are modeled as arbitrarily shaped polygons due to diverse nature powders, which can be highly irregular shape. The force applicable both convex and concave polygonal particles. It adjusted use a proportional weighted maximum intersection area upon splitting contact areas. This results continuous trajectory, would otherwise not guaranteed. validated literature reported packing ratios ellipses. Simulated deposition sugar-shaped particles shows that dense packings fraction interactions occurring up 7%. Furthermore, influence particle shape on coordination number density shown simulation sugar-like material.