Finite Element Analysis Of Auto-Compress Locking Nail Of Stresses Control And Femur

The main load-bearing of lower limb is femur, the study of femur is of great help for fracture of femur, replacement of artificial femoral head prosthesis. We build the modeling of femur and Auto-Compress Locking nail of stresses control(SCALN),and make biomechanical properties by finite element analysis. The results provide the strong scientific basis for clinical applications.The article gives three aspects of the study:1.Building the model of femur and FEM simulationWith the average size data of the femur anatomical and X-ray measurement which reported in the literature. We build the model of the femur by using the modeling tools in the Pro/E, and import the model into ANSYSWorkBench for finite element analysis basing on the data interface. We obtained the natural vibration patterns of femur at different frequencies and the stress-strain behaviors in the compression loads.The results overcome the limitation of using individual model in theoretical research and clinical practice. The results not only provide general clinical guidance for fracture and hip replacement, but also have important significance on the orthopedic biomechanics study and orthopedic research-based teaching.2.Building the model of SCALN and testing mechanical properties of local specimensWe build the model of the various parts of SCALN in Pro\E,and finally assemble into the overall model, importing the nail sets and screw model into ANSYS12.0 by using Pro\E and ANSYS interface. As the parts of nail is under the alternating load, which is more complicated.The article reduced to axial compression load, and the material properties is titanium alloy, the maximum stress of nail sets and screw is 95.002MPa and 213.57MPa under the load of 600N.This is slightly larger than the value reported in the literature.3.The mechanical properties of SCALNWe make compression, torsion and stability analysis on SCALN in ANSYSWorkBench, and get that the SCALN have sufficient strength in ant compression and torsion, the buckling critical load of it is 2491.1N...