Titanium implants are extensively used in surgical traumatology and orthopedics. Wide application of titanium and his alloys is caused by high biochemical and biomechanical compatibility of these materials with living tissues.Aim. To study influence of porosity of mesh structure on the module of elasticity and a limit of fluidity of a cellular implant from Ti-6Al-4V alloy by the calculations executed with application of a finite element method. Materials and methods. As model material has been taken titanic Ti-6Al-4V alloy. As basic architecture used mesh structure which elementary cell consists of the cylinders focused in space at an angle 109 °28 ′ to each other. For carrying out calculations in a software package of Solid Works 3D models of an elementary cell with a different share of a time are constructed. Samples projected in the form of a cube with open porosity, at the same time the party of a cube made not less than 10 sizes of a pore and not less than 10 mm. The experiment on compression regulated by ISO 13314 has been made. For carrying out calculations in the Mechanical Structure module of a complex of programs ANSYS tetragonal grids for all types of samples are constructed. For check of correctness of results in the Mechanical Structure module of a complex of programs ANSYS the convergence of calculations for the minimum value of movements along an axis of loading of Y was estimated. Results. By means of calculations the mesh structure of an implant with decrease in the module of elasticity more than three times in relation to compact titanic alloy is created. Zones of localization of equivalent tension are revealed, recommendations about possible improvement of architecture of an implant are made. Conclusion. This research has shown that mechanical properties of porous titanium are optimal. For this reason use of the porous titan for replacement of defects of a bone is the perspective direction in improvement of methods of bone grafting.
- 76.00.00 MEDICINE AND HEALTH CARE