Micromechanical modeling of ductile fracture of human humerus

  • J. Rahmoun Laboratory LAMIH, Polytechnic University Hauts-de-France, 59313 Valenciennes cedx 9, France. Phone: +33327511412
  • H. Naceur Laboratory LAMIH, Polytechnic University Hauts-de-France, 59313 Valenciennes cedx 9, France. Phone: +33327511412
  • P. Drazetic Laboratory LAMIH, Polytechnic University Hauts-de-France, 59313 Valenciennes cedx 9, France. Phone: +33327511412
  • C. Fontaine Laboratory of Anatomy, Hospital University of Lille, 59000 Lille, France
Keywords: Micromechanics, biomechanics, multiscale modeling, fracture, impact, finite element

Abstract

This paper deals with the formulation, development and validation of a newly developed micromechanical-based model for the modeling of the nonlinear ductile fracture of human humerus. The originality of the present works concerns the coupling between the micromechanical formulation based on the Mori-Tanaka homogenization scheme for cylindrical voids and the Marigo nonlinear ductile damage model based on the porosity growth. The proposed model was implemented as a User Material UMAT within the explicit dynamic software LS-DYNA and validated by numerical and experimental analysis conducted by a drop tower impact of human humerus. The outcome of the proposed multi-scale model appears to correctly predict the general trends observed experimentally via the good estimation of the ultimate impact load and the fracture patterns of the human humerus.

Published
2020-06-23
How to Cite
Rahmoun, J., Naceur, H., Drazetic, P., & Fontaine, C. (2020). Micromechanical modeling of ductile fracture of human humerus. Journal of Mechanical Engineering and Sciences, 14(2), 6952 - 6960. https://doi.org/10.15282/jmes.14.2.2020.32.0544
Section
Article