Titre : Numerical Method of identification of the mechanical and dynamic behavior of materials used in automotive calculation 

Auteurs : Abdelilah Elbazze, Bouchaïb Radi,  

Revue : Uncertainties and Reliability of Multiphysical Systems 

Numéro : Issue 1 

Volume : 4 

Date : 2020/09/25 

DOI : 10.21494/ISTE.OP.2020.0569 

ISSN : 2514-569X 

Résumé : A coherent and reasonable modeling behavior of the material and its damage under the coupled effects of the deformation, the strain rate and the temperature compared to the stress of flow of the material is remarkably crucial in order to design and optimize the parameters that characterize the material numerically and minimize the maximum error between simulation and experiment. The Johnson-Cook flow constraint model was adopted to model and predict the behavior of material flow at strain rate and temperature average. In addition, the work that has been done in this article is to explain each phase of identification of the parameters of the constructed model and how it is systematically examined in relation to the experimental data. Then, to predict the behavior of damage, the failure model proposed by Johnson and Cook was used to determine the parameters of rupture of the model, based initially on the determination of the triaxiality for an ambient temperature and under a quasi-static strain rate condition. The method explained in this work is the most used in the automotive industry to characterize suitable materials for numerical crash calculation. 

Éditeur : ISTE OpenScience