An algorithm of filling the mutational structure for FDM prototyping

Fused Deposition Modeling (FDM) is an additive manufacturing process that can quickly produce geometrically complex parts through the melting, depositing and solidifying of thermoplastics, layer by layer. This paper proposes an algorithm of the filling mutational structure which is used to fill the mutational structure with a high density and the other regions with a low filling density. Through analyzing the area classification and geometric feature of the printing model, two-dimensional filling algorithm and three-dimensional filling algorithm are proposed respectively. By experimental verification, this filling algorithm not only improves the strength of the mutational structure but also saves the printing time and enhances the working efficiency.