Analysis on Loading Properties of Dynamic Explosive Fragmentation of Conical Head Warhead
The SPH numerical simulation method was used to simulate the process of the conical warhead shell expanding to form fragments and the fragments load characteristics,so as to explore the load characteristics of the dynamic explosive fragments of the conical warhead at different moving velocity,and compares with the results of static explosion tests to verify the accuracy of the numerical simulation.The influence of different moving speeds of the conical warhead on the fragment load characteristics was studied.The results showed that because of the existence of the truncated cone surface,the fragment distribution area at the head end of the warhead is improved,and the attack range of the warhead fragment is increased;the initial velocity of the fragments formed by the warhead shell presents an obvious stepped distribution along the axial direction of the warhead.Based on this frag-ment velocity,it can be divided into four regions,namely,the truncated cone shell,the middle front of the cylindrical shell,the middle rear of the cylindrical shell,and the middle rear of the cylindrical shell;Under the condition of dynamic explosion,with the increase of the moving speed of the warhead,the initial velocity of the fragments formed by the shell at the tail end presents an irregular"V"shape,which decreases first and then increases.The fragment scattering angle is less affected by the moving speed of the warhead,and the fragment azimuthal angle moves along the moving direction of the warhead.
fragmentsnumerical simulationconical head warheadload characteristics of fragment
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