THE DIFFERENCE BETWEEN BALLISTIC IMPULSE AND ACTUAL IMPULSE RESULTING IN VERTICAL HEAVE OF RIGID BODIES
Confined explosion tests often include a free-moving roof that follows a ballistic path in response to the pressures produced by the explosion. However, even if there is no ballistic motion, there is a non-zero impulse delivered within the enclosure. As such, differences in impulse are not directly proportional to differences in heave height. This paper derives a model that allows vertical ballistic heave measurements to be corrected for this problem. The results will show that the discrepancy decreases as the peak pressure far exceeds the critical value required to offset the weight of the heave mass. This paper will also show that, for nearly all confined explosions with venting, the ratio of ballistic impulse to actual impulse can be described in terms of a single parameter: the ratio of peak quasi-static pressure to the critical pressure required to offset the weight of the roof.
Richard G. Ames
Raytheon Missile Systems TU/M10/13360 Hemisphere Loop Tucson, Arizona 85756 USA
国际会议
25th International Symposium on Ballistics(第25届国际弹道会议)
北京
英文
1213-1221
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）