The experimental and simulation research on the dispersion rules of fragments from asymmetric structures

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (15) : 122-126.

WANG Ma-fa1, LU Fang-yun2, LI Xiang-yu2, LIN Yu-liang2, LIU Sen1, HUANG Jie1

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Abstract

In order to research on the dispersion rules of fragments from deformable warheads effected by the deformed outline, the experiments of D outline structures and the simulation of concave, convex and D outline structures have been done to analyze the dispersion rules of fragments.The results of fragments distribution and initial velocities were obtained from the experiments and simulation. The results of simulation are in good agreement with experimental data. The results show that the fragments focus on target-direction at a range of ±10°, and the focusing effect of fragments from asymmetrical initiation structures would be better than that from initiation at axes. The initial velocities deduce with the azimuth angle, and it shows little difference between different initiation types qualitatively and quantitatively. The relationship between the projection angle of fragments and the incident angle of shock waves are linear with different slopes for different outline structures. Based on the linear relationship, an engineering equation was given to calculate the projection angle for different outline structures.

Key words

Mechanics of explosion / Deformable warhead / D outline structure / Projection angle

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WANG Ma-fa1, LU Fang-yun2, LI Xiang-yu2, LIN Yu-liang2, LIU Sen1, HUANG Jie1. The experimental and simulation research on the dispersion rules of fragments from asymmetric structures[J]. Journal of Vibration and Shock, 2016, 35(15): 122-126

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