Abstract
This study examines the inhomogeneity of deformed state during compression testing of porous titanium implant. The theoretical part of the article includes numerical simulation of deformation of a prismatic titanium sample compressed with absolutely rigid plates. The porosity was provided by the circular shape pores with titanium struts between them. To solve the problem by means of the finite element analysis, the boundary conditions were set using the ABAQUS software. The fields of strain, stresses and displacements were determined. Presumable place of fracture coincide with the highest values of strain which are localized in vertical struts. Physical modeling of the implant compression was performed at the second part of the study on the testing machine with video recording. It was shown that in the real process the localization of failure corresponds to the calculated data.
Highlights
The implant industry takes an ever-increasing living space in the field of bioengineering
This study examines the inhomogeneity of deformed state during compression testing of porous titanium implant
Presumable place of fracture coincide with the highest values of strain which are localized in vertical struts
Summary
The implant industry takes an ever-increasing living space in the field of bioengineering. Its achievements allow for prolonging an active life of a human as well as "repairing" individual body parts [1]. Titanium alloys are often utilized as a material for such invasions due to their chemical inertness and high strength to weight ratio [2,3,4]. Manufacturing of titanium implants employs methods of powder metallurgy used to obtain the desired architecture (the ratio of the shape and the size of pores in materials) [5, 6]. The predetermined porosity reduces the weight of implant, which allows for achieving the weight of natural bone tissue. The better intergrowth of the living tissues through pore space is ensured, integration with this organism is achieved
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