A. M. Mamonov, E. V. Preobrazhenskii, A. V. Neiman, O. A. Polyakov, E. O. Agarkova
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Computer Simulation Prediction of the Operational Capability and Reliability of a Condylar Prosthesis
Abstract—A finite element simulation of the state of stress in the femur–condylar prosthesis biotechnical system is performed, and its mechanical behavior is analyzed. The metallic components of the endoprosthesis (implant) are made of a VT6 titanium alloy, and the plateau of the tibial component is made of ultrahigh-molecular-weight polyethylene. The stresses in the bone structures and the most severely loaded components of the endoprosthesis are calculated at a functional load of 3300 N. A high degree of similarity of the biomechanical behavior of the biotechnical system (with the endoprosthesis) to the behavior of a healthy femur has been established. The stresses and strains of all components of the biotechnical system are shown not to exceed their critical values. The calculation results made it possible to predict the operational capability and reliability of the endoprosthesis components under static and cyclic loads, the wear resistance of the mobility unit, and the reliability of the cement mantle.
期刊介绍:
Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.