Science and Technology of Energetic Materials

Vol.66, No.6 (2005)Special Issue for ISEM 2005


Shock analysis of underwater explosion using particle method
Satoshi Matsumoto, Yuichi Nakamura, and Shigeru Itoh


A detonation of explosives generates extreme high energy in a very short time. The control of the explosive energy is important to the practical use of explosives. It is one of the most popular techniques to use the underwater shock waves in water. Numerical simulations have been utilized in various engineering fields. The large deformation and distortion of materials and media, however, often occur with explosion of explosives. It seems that the numerical analysis method based on particles such as smoothed particle hydrodynamics (SPH) is of use for such phenomena. In this study, we attempt a numerical simulation of an underwater explosion of a high-explosive using particle method. The two-dimensional axisymmetrical simulation in the cylindrical coordinate system is carried out to simplify the problem. The simulation result is compared with the experimental result and we discuss the effectualness of the particle method for a simulation with explosives.

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Underwater shock wave, High explosives, Smoothed particle hydrodynamics, Moving least squares method

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