Lunar Regolith Classification Using Discrete Element Method on Single-Deck Vibrating Screen

ABSTRACT The sustainable use of lunar resources requires efficient processing of lunar regolith, particularly for advanced manufacturing techniques such as selective laser melting and laser engineered net shaping, which demand particles ≤ 100 μm. This research employs the discrete element method (DEM) to simulate a vibrating screen operating in the Moon’s environment, specifically investigating and providing insights into the effects of vibration parameters and screen inclination on screening efficiency, reaching a maximum efficiency of 76.9%. Additionally, the study explores the feasibility of transporting a vibrating screen from Earth to the Moon, considering its mass and the actual capabilities of the Space Launch System Block 1 Cargo, concluding that the screen can be transported to the Moon. Although the simulated efficiency is over 70%, better results are likely achievable by studying other configurations of motion or different geometries for the screen and deck. This work represents the first DEM-based study of vibrating screens under lunar gravity and provides essential insights for in situ resource utilization strategies.