Infill optimization for pieces obtained by 3D printing

This work exposes the development of an infill optimization methodology and its integration into a optimization global methodology previously developed by the authors. Optimization is usually focused on the main boundary geometry of the pieces and its infill is defined separately in the slicer software. By integrating the infill optimization into a mayor optimization methodology the design becomes more flexible and effective, increasing its stiffness while reducing amount of material and therefore its weight. Finite Element Method is applied to the lattice infill size optimization, therefore the infill structure is modified along the work piece depending on the load.