Study of the slant fracture in solid and hollow cylinders: Experimental analysis and numerical prediction

This paper is devoted to the numerical and experimental study of ductile fracture in bulk metal forming 2017A-T4 aluminum alloy. From an standpoint, alloy investigated under compressive load. Two cross-sections solid hollow specimens are considered. The mechanical behavior microstructure were characterized. It found that well-known barrel shape obtained when a load applied. Analyses topographies show with dimples tension coexistence slant compression. classical physically-based Gurson-Tvergaard-Needleman (GTN) model its extension incorporate shear mechanisms predict failure at low-stress triaxiality These two models have been extended take into account thermal heating effect induced by dissipation within material during process. implemented finite element code Abaqus/Explicit using Vectorized User MATerial (VUMAT) subroutine. Numerical simulations forging process made for cylindrical good agreement results. In contrast GTN model, modified incorporating can capture final failure.