Numerical Investigation of Mechanical Behavior for Lattice Structure with Effect of Different Nanomaterial Types

Abstract

Porous biomaterials have extensively been used as new materials for various bio-implants, particularly for bone and bone interfacing components. In practice, while open-cell/permeable porous materials are used to allow osseointegration in bone implants, they should be mechanically durable and stable for the long term to tolerate human weight together with possible static and dynamic loads on the body. It has been ingrained that porous biomaterials can be made considering defined representative volume elements (RVE) by recent growths in additive manufacturing. In this study, two porous biomaterial models, including unit cell and also lattice structure, are presented. The models applied the finite volume method to discretize and solve by using a multi-physics COMSOL mechanical structure code. The cell is modelled using three materials: titanium alloy Ti_6Al-4V-ELI, and in this study, for the first time, two types of nanomaterials: calcined alpha-alumina (α_ Al2O3) and Glass-infiltrated alumina ceramic. The results obtained from this study revealed that for both unit cell and lattice structure, the minimum displacement occurred with Glass-infiltrated alumina ceramic and increased with calcined alumina (α_ Al2O3) and titanium. Moreover, it could be concluded that the maximum stress occurred with the Glass-infiltrated alumina ceramic and decreased with calcined alumina (α- Al2O3) and titanium for the lattice structure.