摘要
为了确定影响小口径PELE对薄靶板作用效果的关键因素，改变弹体材料、装填物材料、弹丸着速和着角，在12．7mm弹道枪上发射PELE对固定靶板进行撞击试验。试验结果表明，弹体采用压拉比高的材料时，PELE横向效应明显；在试验速度范围内，随着速的提高，PELE破片数量增多，横向效应增强；装填物材料对横向效应的主要影响因素是泊松比和弹性模量，而不是密度；在0°～45°范围内，随着角的增大，PELE横向效应增强。这些结论为小口径PELE的设计和运用提供了重要依据。
In order to ascertain the pivotal factors affecting the lateral effect of PELE, a series of experiments of PELE projectiles impacting steel plate were made with different jacket materials, filling materials, impact velocities and impact angles. Each PELE was projected by a 12.7mm gun. The outcome of the experiments indicated the following four rules. Firstly, the lateral effect of PELE became notable when the ratio of the compressive resistance to extension strength of the jacket increased. Secondly, with the increase of the impact velocity, the amount of the debris increases and the lateral effect tones up after PELE perforated the target. Thirdly, it is not the density but the Poisson＇s ratio and Modulus of elasticity that mainly affect the lateral effect of PELE. And lastly, the lateral effect of PELE boosts up with the enlargement of the impact angle between 0 and 45 degrees. The above-mentioned rules may redound to the design and application of small caliber PELE.
出处
《实验力学》
CSCD
北大核心
2007年第5期505-510,共6页
Journal of Experimental Mechanics
