Finite element analysis of functionally graded bone plate at femur bone fracture site

[摘要] This paper focuses on the analysis of fractured Femur bone with functionally graded bone plate. The Femur bone is modeled by using the data from the CT (Computerized Tomography) scan and the material properties are assigned using Mimics software. The fracture fixation plate used here is composed of Functionally Graded Material (FGM). The functionally graded bone plate is considered to be composed of different layers of homogeneous materials. Finite element method approach is adopted for analysis. The volume fraction of the material is calculated by considering its variation along the thickness direction (z) according to a power law and the effective properties of the homogeneous layers are estimated. The model developed is validated by comparing numerical results available in the literature. Static analysis has been performed for the bone plate system by considering both axial compressive load and torsional load. The investigation shows that by introducing FG bone plate instead of titanium, the stress at the fracture site increases by 63 percentage and the deformation decreases by 15 percentage, especially when torsional load is taken into consideration. The present model yields better results in comparison with the commercially available bone plates.

[发布机构] Department of Mechanical Engineering, College of Engineering and Technology, Bhubaneswar; 751003, India^1;Department of Mechanical Engineering, IIIT, Bhubaneswar; 751003, India^2;Department of Mechanical Engineering, Centurion University of Technology and Management, Khurda; 751009, India^3

[效力级别] 机械制造

[关键词] Axial compressive load;CT (computerized tomography);Effective property;Functionally graded;Functionally graded material (FGM);Homogeneous layers;Homogeneous materials;Thickness direction