Volume-conservative modeling of structures manufactured by molten drop-on-drop deposition

An improved analytic model to accurately determine the geometry of structures manufactured by molten drop-on-drop deposition is presented. This mode allows quasi-spherical deposited droplets be achieved and precise control over final structures. The exactly conserves volume material matches solidification contact angle between consecutive droplets, providing a geometrical description proposed validated using results experiments performed with several materials for substrate, droplet radii ranging from 40 800 μm. A good degree agreement was found theoretical experimental results. comparison well-established Gao&Sonin shows that represents major improvement, may great practical interest in industrial applications.