Author(s)

LORENZO FRACCAROLI, MARCO NICOLA MASTRONE, FRANCO CONCLI

Abstract

The aim of this paper is to calibrate the fracture locus (FL) of an aluminum alloy. The approach used is based on an iterative procedure that involves finite element (FE) simulations and experimental tests. Unidirectional tensile tests on three specimens having different notches were performed to induce different states of stress inside the material. The constitutive law was calibrated using the Voce equation. Experiments were reproduced with FE simulations to extract parameters like equivalent plastic strain at fracture, triaxiality and Lode parameter, successively used for tuning the fracture locus of the considered material.

Keywords

FEM, ductile damage models, fracture locus, Rice and Tracey, AlSi10