Determination of Mechanic Resistance of Osseous …...Determination of Mechanic Resistance of...
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Determination of Mechanic Resistance of Osseous Element through Finite Element Modeling E. Isaza 1* , L. García 1 , E. Salazar 1 1 Department of Mechanical Engineering. Universidad Tecnologica de Pereira. Colombia. *E-mail: [email protected] Introduction: the main goal of this study is to model and test a human femur through finite element technique, validating the results by comparison with experimental studies. References: D. Cody, et al. Femoral Strength is Better Predicted by Finite Element Models than QCT and DXA. Journal of Biomechanics. Volume 32. pp. 1013-1020. (1999). D. Wirtz, et al.Critical Evaluation of Known Material Properties to Realize Anisotropic FE-Simulation of the Proximal Femur. Journal of Biomechanics. Volume 33. pp. 1325-1330. (2000). Anisotropic Bone Analysis: this work was developed using the anisotropic model guided for the next matrix: Where: The simulation was performed using the load configuration gives by Cody in order to compare the results objectively. Figure 2: load reference and simulation results using Comsol Multiphysics Figure 3: plotted results and comparison with empirical test over real human bones Cody Isotropic Anisotropic R 2 0.8354 0.6885 0.9123 Results: the anisotropic model has better correlation to predict the fracture load. The table shown the correlation of the isotropic and the anisotropic models simulated with Comsol and the model of Cody: Conclusions: the anisotropic model is better to predict the femur fracture. In comparison with other models and the empirical test, the anisotropic model deliver more accurate results. The mechanical parameter used to develop the simulations was determined as a function of the bone density, giving to this work a parametrical approach to predict the femur failure. 0 2 4 6 8 10 12 14 16 18 20 0 5 10 15 20 Predicted Fracture Load kN Fracture Load kN Cody Isotropic Anisotropic Excerpt from the Proceedings of the 2013 COMSOL Conference in Boston
Transcript of Determination of Mechanic Resistance of Osseous …...Determination of Mechanic Resistance of...
Determination of Mechanic Resistance of Osseous Element through Finite Element Modeling
E. Isaza1*, L. García1, E. Salazar1
1Department of Mechanical Engineering. Universidad Tecnologica de Pereira. Colombia. *E-mail: [email protected]
Introduction: the main goal of this study is to model andtest a human femur through finite element technique,validating the results by comparison with experimentalstudies.
References:
D. Cody, et al. Femoral Strength is Better Predicted by Finite Element Models than QCT and DXA. Journal of Biomechanics. Volume 32. pp. 1013-1020. (1999).
D. Wirtz, et al.Critical Evaluation of Known Material Properties to Realize Anisotropic FE-Simulation of the Proximal Femur. Journal of Biomechanics. Volume 33. pp. 1325-1330. (2000).
Anisotropic Bone Analysis: this work was developedusing the anisotropic model guided for the next matrix:
Where:
The simulation was performed using the loadconfiguration gives by Cody in order to compare theresults objectively.
Figure 2: load reference and simulation results using Comsol Multiphysics
Figure 3: plotted results and comparison with empirical test over real human bones
Cody Isotropic Anisotropic
R2 0.8354 0.6885 0.9123
Results: the anisotropic model has better correlation topredict the fracture load. The table shown thecorrelation of the isotropic and the anisotropic modelssimulated with Comsol and the model of Cody:
Conclusions: the anisotropic model is better topredict the femur fracture. In comparison withother models and the empirical test, theanisotropic model deliver more accurate results.
The mechanical parameter used to develop thesimulations was determined as a function of thebone density, giving to this work a parametricalapproach to predict the femur failure.
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Cody Isotropic Anisotropic
Excerpt from the Proceedings of the 2013 COMSOL Conference in Boston
