Establishment and verification of three-dimensional finite element model based on Composite Femur scans

doi:10.3969/j.issn.2095-4344.2014.53.023

Abstract

Abstract:

BACKGROUND: As the computer technology develops, three-dimensional finite element analysis has been widely applied in the studies of skeletal biomechanics, femur is the longest and thickest bone in human bodies and has typical physiological significance, more research will focus on the biomechanics of the femur.
OBJECTIVE: To establish a three-dimensional finite element model of the long bone and verify the parameters through the biomechanical laboratory experiment.
METHODS: Based on successive images from CT scans, a three-dimensional solid model of the 3rd generation composite femur was established in Mimics. According to the relevant empirical formulas and material parameters of the universal finite element analysis software, three-dimensional finite element analysis models with different numbers of materials were set up. The boundary conditions were restricted and the simulation for linear elasticity of the compression was carried out. The stress and strain results were validated by in vitro verification test.
RESULTS AND CONCLUSION: Node number and cell-grid of the finite element model was 52 772 and 45 127, respectively. Under the end displacement, the average relative error between the simulation results and the experimental data for force-displacement was minor. Using the Mimics and Ansys softwares, the results were consistent with the biomechanical test, indicating the established femoral models were reliable.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

全文链接：

Key words: femur, finite element analysis, CT scans, biomechanics, stress, physics

CLC Number:

R318

Wang Guo-dong, Jiang Hai-bo, Pan Tao . Establishment and verification of three-dimensional finite element model based on Composite Femur scans[J]. Chinese Journal of Tissue Engineering Research, 2014, 18(53): 8651-8655.

Figures/Tables 2

References

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