MATERIAL SPREADING AND COMPACTION IN POWDER-BASED SOLID FREEFORM FABRICATION METHODS: MATHEMATICAL MODELING

摘要

In this study, the spreading and compaction of powder by a counter-rotating roller, in the solid freeform fabrication (SFF) process, is modeled and characterized. The effect of layer thickness, roller diameter, amount of loose powder, and its initial density on the powder bed’s relative density and roller compaction pressure is investigated.