Anisotropic elastoplastic phase field fracture modeling of 3D printed materials

A phase field model for anisotropic, elastoplastic fracture in layered structures obtained by 3D printing processes is proposed. An extension of anisotropic to elastoplasticity developed. The able describe a transition from quasi-brittle behaviors depending on the angle layers microstructure with respect external loading. Such feature special interest behavior printed materials. present introduces two variables, one bulk damage and micro interfacial describing different mechanisms. Finally, we have proposed an original methodology identify macroscopic strain density as function variable using numerical homogenization Representative Volume Elements. Numerical investigations show that convergent mesh refinement, allows complex crack initiation propagation structures. experimental comparison provided validate use such polymer