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Micromechanical modeling of ductile fracture of human humerus

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.
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Submitted on : Monday, April 25, 2022 - 2:11:50 PM
Last modification on : Tuesday, April 26, 2022 - 3:03:21 PM
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Jamila Rahmoun, Hakim Naceur, Pascal Drazetic, Christian Fontaine. Micromechanical modeling of ductile fracture of human humerus. Journal of Mechanical Engineering and Sciences, Universiti Malaysia Pahang, 2020, 14 (2), pp.6952-6960. ⟨10.15282/jmes.14.2.2020.32.0544⟩. ⟨hal-03442148⟩



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