MULTISCALE MODELING OF ADDITIVELY MANUFACTURED METALS FOR AEROSPACE APPLICATIONS USING CRYSTAL PLASTICITY

Abstract

In this study, the porosity, one of the additive manufacturing (AM) defects, was modelled as a parameter that influence on the mechanical behaviour of material and the failure mode of the structural component. A three dimensional (3D) multiple-slip crystal-plasticity dislocation-densities based model is used to study the effect of AM defects on the deformation behaviour in dynamically loaded microstructures of AM-built metals. The results show that the mechanical behaviour of microstructure linked to the materials’ characteristics of mechanical properties at meso-macro scale.