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Inertia Effects on Spall Failure of Ductile Materials

ost of the ductile materials fail by dynamic failure modes due to the processes involves in material manufacture, crash events, explosive loading among others. It can be attributed that significant inertia effects take effects in the process of plastic flow, thus material properties are accelerated. High loading and changes in the plastic flow introduce macroscopic and microscopic deformation mechanisms in the materials. Literature indicates that material inertia affects the failure of ductile materials subjected to high rates of loading (Molinari, Jacques, Mercier, Leblond " Benzerga, 2015). This research is aimed at investing and analyzing how strain localization and fracture of ductile materials are affected by material inertia by using selected topics such as necking, adiabatic shear banding, fragmentation and dynamic damage by micro-voiding. Therefore, this research project proposes to obtain the results by using a spall fracture method. The method was chosen because it includes a microscale inertia. According to Molinari, Mercier and Jacques, (2014) the spalling fracture applications show that microscale inertia possess first order effects on the results (Molinari, Mercier " Jacques, 2014).


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