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本文研究了7.62mm和5.56mm弹丸、1.03g钢球射击水和20％明胶,并用BJ1000型传感器测定压力变化。实验结果表明,两种弹丸射击水可出现三个压力波形,各峰值间相隔的时间,以7.62mm弹丸为长,5.56mm弹丸较短;峰值的大小,多以5.56mm弹丸为高,依次为7.62mm弹丸和钢球。上述的这种差异取决于各投射物的弹道特点。测得的压力值及其变化过程与瞬时空腔效应和生物组织损伤特点,有密切关系。
In this paper, 7.62mm and 5.56mm projectiles, 1.03g steel ball shooting water and 20% gelatin were studied. The pressure was measured by BJ1000 sensor. The experimental results show that there are three pressure waveforms in the shots of two kinds of projectiles. The duration of each peak is 7.62mm and the length of 5.56mm projectile is short. The peak value of the shot size is 5.56mm, 7.62mm projectile and steel ball. The above differences depend on the trajectory characteristics of the projectiles. The measured pressure value and its changing process are closely related to the instantaneous cavity effect and the characteristics of biological tissue damage.