NUMERICAL SIMULATION OF MINE DETONATION BENEATH AGENERALIZED ADD-ON ARMOR STRUCTURE

摘要

Numerical simulations using LS-DYNA were performed with a multimaterial Euler processor utilizing the software FSI (Fluid StructureInteraction) capabilities to determine the damage due to incident impulse andpressure effects on a generalized add-on armor module structure. The armormodule's damage was estimated by measuring several physical variables suchas the dynamic displacement, strain energy and vertical momentum transfer tothe armor module. Additional factors influencing module damage that werealso numerically investigated included the explosive charge's geometric shape(cylindrical, spherical, cubic), standoff distances beneath the target, chargearrangement (buried flush with the surface, surface, above ground) and soiltype properties. The simulation showed that the damage to the module isincreased for both flushed and buried mines compared to surface mines. Inaddition, the explosive charge's geometric shape and soil type have beenshown to significantly influence the load imposed on the generalized armormodule and also consequently to the damage of the structure.