Comparison of Results Used Smooth Particle Hydrodynamics Method and Lagrange Method Based on Segmental Uncoupled Charge

SPH method is widely used to study the dynamic response of metal casing under explosive loading because its superiority in simulating fracture phenomenon [1-3]. The distribution fragment from uncoupled charge structures with segmental shaped were studied. X-ray photographic images fragmentation obtained explosion experiment compared numerical results based on and Lagrange method. shows that are good agreement experimental while some errors appear velocity fragments at bottom 28.4% lower than results. curve surge appears range -90° – 85°, where difference between two methods occurred. In this paper, differences mechanism involved revealed. conclusion provides a reference for application meshless research materials loading.