Impact of inert metal particles flow on aluminium plate

Abstract

Inert metal explosive, a new kind of explosive, is a mixture of high explosive and inert metal particle. When this kind of explosive is detonated, an inert metal particle flow will be formed by the explosive product driving. To determine the characteristics of the movement of the metal particle flow, a series of aluminium plates were designed to be the targets on which the metal particle flow impacted. The test result was presented and a numerical model was set up to analyze the impact of the high speed inert metal particles on aluminium plate. Based on the numerical analysis, the relationship between the characteristic of the mark on the target plate and the initial condition of the inert metal particles was proposed. From the analysis of the impact on target plates, more information about the movement of the metal particles could be reconstructed.

Keywords

inert metal explosive / metal particle flow / high speed impact

References

[1] Wittenauer J. P., Yin J.. Tungsten and tungsten alloy[J]. China Tungsten Industry, 1993, 32(1): 22-25.

[2] Tan D., Li X., Wen D., et al. Experimental investigation of terminal effects of spherical tungsten fragments[J]. Explosion and Shock Waves, 2003, 23(5): 425-429.

[3] Zhang Q., Bai C., Liu Q., et al. Study on near field dispersal of fuel air explosive[J]. Journal of Beijing Institute of Technology, 1999, 8(2): 113-117.

[4] Sui S., Wang S.. Terminal Effects[M]. 1998, Beijing: National Defense Industry Press 134-136.

[5] Zhang W., Ma W., Ma Z., et al. Numerical simulation of craters produced by projectile hypervelocity impact on aluminum targets[J]. Chinese Journal of High Pressure Physics, 2006, 20(1): 1-5.

[6] AUTODYN Users Manual Revision 4. 3[M]. Century Dynamics, San Ramon, USA, 2003.