Abstract:
This study explores the hydrodynamic behavior of blast waves in a confined cylindrical structure subjected to internal TNT detonation. Employing LS-DYNA’s ALE (Arbitrary Lagrangian-Eulerian) multi-material solver, the simulation captures the complex interaction between detonation gases, air, and a Titanium Boride containment cylinder. Multiple mesh geometries were analyzed to evaluate the impact of shape and transition zones on blast wave propagation, pressure loading, and structural deformation. Emphasis is placed on the use of the JWL equation of state to accurately represent the hydrodynamic expansion of explosive gases and their interaction with the cylinder wall. This research informs mesh-based and geometric strategies for optimizing containment vessel performance under extreme hydrodynamic loads.
