Algorithm for Generating Gradient Infills in Load-bearing 3D-printed Parts

Abstract

In many applications, it is crucial to design load-bearing elements that meet strength and stiffness requirements while minimizing material usage. Using additive manufacturing (AM), these goals can be achieved. With 3D printing technology is possible to create an internal structure — referred to as infill or lattice structure — generated by a dedicated algorithm. A special place is occupied by functionally graded lattice structures (FGLS), which are generated with tunable properties. which is the focus of this article. The primary objective of this algorithm is to create an internal parametric structure with variable thickness for any given cross-sectional shape. Secondary, the algorithm can calculate its cross-sectional characteristics. To evaluate its functionality and effectives, a series of 9 virtual models of cross-sections with 2 varying parameters were generated and subsequently compared with numerical models.