|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Dynamic Behavior of Materials VIII
||Prediction of Fragmentation of an Aluminum Expanding Ring
||Gianluca Iannitti, Andrew Ruggiero, Gabriel Testa, Nicola Bonora, Domenico Gentile
|On-Site Speaker (Planned)
The fragmentation behavior of solid is important in a wide range of industrial and military applications. The electromagnetically launched expanding ring proved a useful technique for investigating tensile fracture and fragmentation at high strain rate. In this work, fragmentation in AL 6061-O was predicted using a modified version of the Grady’s theory and continuum damage mechanics modelling. Numerical simulations of the rings expansion were performed through finite element method taking care to apply proper boundary conditions. The Lorentz force was calculated by imposing the measured currents and providing the inductances values as a function of the ring geometry. To predict the material failure, the Bonora’s damage model was applied, considering a statistical variation of material parameters within the rings volume.
||Planned: Supplemental Proceedings volume