Finite Element Analysis Based on Mechanical Vibration characteristics of Femur Bone

Biomechanics is the combine function of structure and motion of the mechanical parts of a biological system. It utilized the principle of physics by combining the mechanical engineering with biology. The main objective of this study is to investigate the behavior of human femur bone under external vibration modes to provide more intuition in designing the biomechanical component. The solid model of femur bone was designed in solidworks and Ansys was used as the analysis tool. The analysis was carried out for two boundary conditions, fixed-fixed and free-free. The FEA analysis provides the first six modes of failure frequency under different mode shapes. The frequency corresponding to the first mode is called the fundamental frequency of the bone. The result will be helpful for the orthopedic surgeons for bone prosthesis.

I. Introduction

Since the last few years we have seen the tremendous increase in the biomechanical research. Femur is the strongest and largest bone in human body, extending from hip to the knee. It provides the attachment to many muscles and ligaments. The head of the femur fits into the pelvic bone and meshes with the acetablum, which forms the hip joint while the lower end of the femur articulates with the kneecap. The femur is capable of bearing the largest percentage of body weight during normal activities. The femur is always cylindrical, slender and long in structure. The upper end of the femur is smaller than the distal end.