Prediction of fragmentation and experimentally inaccessible material properties of steel using finite element analysis
A fracture strain of 110?5 was found to initiate fragmentation of AISI 4340 steel leading to element deletion. The pressure loading profile can greatly influence the fragmentation behavior. Meshing procedures have a significant effect on the fragmentation behavior and the von Mises stress (tetrahedral mesh vs. brick mesh). Quadratic tetrahedral elements predict much higher stresses near the surface of the ring. Stress predictions during fragmentation is highly dependent on the distance from a newly deleted element.
fragmentation finite element analysis johnsoncook high strain-rate lagrangian analysis eulerian analysis