Stress Analysis of Human Femur Bone Under Physiological Loading Conditions using ANSYS

Categories: Engineering files, Finite Element, Meshing, Optimization

Mohammed Hossain

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Mechanical Engineering students interested in Finite Element Analysis (FEA)
Biomedical Engineering students studying biomechanics
Researchers working in orthopedic biomechanics
Professionals involved in implant and prosthesis design
ANSYS beginners learning real-world structural analysis applications
Anyone interested in applying engineering principles to biological systems

Understanding of biomechanical behavior of the human femur under different physiological activities.
Application of Finite Element Analysis (FEA) in ANSYS for static structural problems.
Implementation of realistic boundary conditions (forces, moments, fixed supports).
Mesh generation and element selection for accurate stress analysis.
Interpretation of stress distribution results and comparison between load cases.
Evaluation of structural safety based on stress limits.
Insight into applications of FEA in orthopedic implant design and biomedical engineering.

About Course

Femur FEA Simulation in ANSYS

This project involves the biomechanical analysis of a human femur using Finite Element Analysis (FEA) in ANSYS under four physiological loading conditions: walking, standing, jumping, and running.

A 3D femur model was analyzed by applying loads at the knee joint while fixing the femoral head to simulate realistic boundary conditions. The following load cases were considered:

Walking: 750 N load with 10,000 N-mm bending moment
Standing: 705 N load with 0 N-mm moment
Jumping: 850 N load with 10,000 N-mm bending moment
Running: 1410 N load with 10,000 N-mm bending moment

Static structural analysis was performed to evaluate the stress distribution developed in the femur under each condition. The material was assumed to be homogeneous and isotropic for simplification.

The results showed variation in stress levels depending on activity intensity, with running producing the highest stress and standing the lowest. All stress values remained within safe limits for a healthy femur.

This study helps in understanding femoral load-bearing behavior during daily activities and provides useful insights for orthopedic implant design and biomechanical research.

Software Used: ANSYS
Analysis Type: Static Structural
Application Domain: Biomechanics / Biomedical Engineering