Improved fracture resistance of 3D-printed elastoplastic structures with respect to their topology and orientation of deposited layers

3D-printed structures may be characterized by anisotropic fracture behavior because of their layered nature. Depending on the orientation sample during layer deposition, a completely different mechanical response can obtained, ranging from quasi-brittle to elastoplastic, and with large variations in maximum stress failure. In this study, an optimization framework is proposed for samples maximize resistance respect both deposited layers process topology sample. To achieve this, phase-field elastoplastic model combined Bidirectional Evolutionary Structural Optimization optimization. The makes it possible predict structure until failure 3D-printing then optimize response. A increase obtained optimizing orientation, significant achieved using present nonlinear compared use linear