ABSTRACT
The development of novel materials is of prime importance in the biomedical areas, especially for bone replacements and dental implants. In this study, finite element modeling of functionally graded biocomposite structures is executed to examine their stability behavior. Here a biocomposite structure is constituted of titanium and hydroxyapatite with smooth gradation in thickness direction of the structure. To compute the nonhomogenous material properties in the thickness direction, Voigt’s micromechanical material model via power-law distribution is utilized. A customized computer code is developed in APDL environment using eight-node quadrilateral elements with first-order shear deformation theory. For the eigenvalue problem, i.e., buckling, Block Lanczos eigenvalue extraction scheme is adopted. The convergence rate of the present finite element model is demonstrated through appropriate mesh refinements. However, to exhibit the accuracy of the present model, appropriate comparison has been made. In addition, a variety of numerical examples reveal the influences of different geometrical and material parameters and support conditions on the buckling behavior of functionally graded biocomposite structures.
