Effect of Morphology, Cross-section Type, and Apparent Density on the Elastic Properties of Additively Manufactured Open-Cell Structures

Metallic foams are known as biocompatible materials which are good candidates for being used in orthopedic implants. This is because their open-cellular structure permits the ingrowth of the new bone tissues and the transport of the body fluids. Advent of novel additive manufacturing techniques make it possible to create implants with arbitrary micro-geometrical features. In this study, Finite Element simulations were carried out to investigate the effect of structure morphology and apparent density on the elastic modulus, shear modulus, yield stress, shear yield stress, and Poisson’s ratio of open-cell tessellated cellular structures to find the appropriate configuration for applications with low-stiffness or high-stiffness requirements. It was seen that the cube morphology has an elastic modulus and yield stress much higher than other morphologies while the diamond structure has the lowest corresponding values

کلیدواژه ها:

Additive manufacturing ، Open-cell biomaterials ، Rhombic Dodecahedron ، Weaire-Phelan ، Kelvin ، Morphology