半密闭环境Al/AP对含铝炸药爆炸效应影响实验研究

Experimental study on effect of semi-closed environment Al/AP onexplosion effect of aluminum-containing explosive

为了研究铝粉和高氯酸铵(AP)含量对含铝炸药在半密闭环境中的爆炸释能影响规律,开展了6种不同配方复合炸药在半密闭罐内的爆炸实验,并使用高速相机及压力传感器获取了爆炸火球膨胀历程和冲击波参数。实验结果表明,在火球膨胀阶段,铝粉和AP含量的增加都可以通过增强铝粉的后燃烧过程,进而提高火球高温持续时间和热流密度峰值;铝粉和高氯酸铵(AP)对管道近端测点的超压不做贡献反而会起负面作用,主要是通过增强铝粉后燃烧过程而对之后的测点产生影响;铝粉和高氯酸铵(AP)主要影响管道近端测点冲量,由于铝粉后燃烧过程的结束,对远端测点冲量不做贡献。

In order to study the influence of aluminum powder and ammonium chloride(AP)content on the explosive energy release of aluminum explosive in semi-closed environment,the explosion experiment of six different compound explosives in semi-closed tank was carried out,and the expansion process and shock wave parameters of explosion ball were obtained using high-speed camera and pressure sensor.The experimental results show that the increase of aluminum powder and AP content can enhance the post-combustion process of aluminum powder during the expansion stage of fireball,thus increasing the high temperature duration of fireball and the peak value of thermal flow density.The aluminum powder and ammonium chloride(AP)do not contribute to the overpressure at the near-end point of the pipeline.Aluminum powder and ammonium chloride(AP)mainly affect the impact of measuring point near the pipeline.Due to the end of the combustion process after aluminum powder,it does not contribute to the impulse at the remote measuring point.