Journal of Fluids Engineering · 1994 · 47 citations · 0 references
EngineeringCivil EngineeringBlastingComputational Structural AnalysisStructural EngineeringBlast DesignShock ResponseBlast ImpactBlast Pressure EffectsBlast SimulationEuler EquationsEuler-lagrange EquationsInternal ReflectionShock-wave ReflectionStructural Response To Blasting
The study investigated a 1‑lb C4 charge centered in a rectangular bunker, using Euler equations and a method‑of‑images approach to model internal shock reflections and illustrate confined blast loading. Euler‑equation predictions matched test data, revealing that confined blast loading is more complex than free‑field loading due to internal shock reflections, with multiple reflections potentially focusing to produce significant late‑time loadings.
A study of blast effects inside an enclosure was performed for a 1-lb C4 charge placed at the center of a rectangular bunker. The prediction based on the Euler equations shows good agreement with the test data. Predictions calculated by the method of images were also obtained to help illustrate the internal shock reflection effects. The results show that the confined blast loading is more complex than the free field loading due to internal shock reflections and interactions. Focusing of multiple reflections is possible and may cause significant late time loadings.