Abstract:
This paper presents an overview of the application of AUTODYN-2D and 3D hydrocodes to simulate various high explosive scenarios, focusing on how numerical methods capture the complex hydrodynamic behavior of blast events. Case studies include street-channeled air blasts, structural blast interaction in storage facilities, explosively formed projectiles (EFPs), shaped charge jet formation, and fragmenting warheads. The hydrodynamic modeling incorporates conservation equations for mass, momentum, and energy, combined with detailed equations of state such as Jones-Wilkins-Lee (JWL) for explosive products. Eulerian, Lagrangian, and Smooth Particle Hydrodynamics (SPH) processors are strategically employed to simulate shockwave propagation, detonation dynamics, and material deformation under extreme loading. These models enable engineers to analyze and optimize warhead geometries, explosive configurations, and structural layouts for maximum performance and safety, emphasizing the critical role of hydrodynamics in guiding design strategies and understanding blast physics.
