矩形射孔弹射流形成机理的微元法数值分析研究
发布时间：2018-11-05 20:53
【摘要】：对矩形射孔弹射流的形成过程及其侵彻靶板的过程进行数值仿真研究,并采用将药型罩进行微元划分的方法,研究药型罩微元的运动规律以及射流的有效结构,获得了射流的头部速度、纵向速度分布、射流的临界侵彻速度等一系列评估射流威力特性的重要参数。结果表明:对于45号钢质靶板,在射流对靶板进行侵彻的过程中,张角为60°的药型罩产生的有效射流为速度超过550 m/s以上的药型罩微元所形成的射流段;有效射流的高速段(v≥1300 m/s)由药型罩顶部材料组成,有效射流的中速段(1000 m/s≤v1300 m/s)由药型罩的中部及中上部材料组成,沿药型罩母线方向靠近底部约0.2倍母线长度的材料不形成有效射流。
[Abstract]:The forming process of rectangular perforating ejection flow and the process of penetrating the target plate are numerically simulated, and the motion law and the effective structure of the jet are studied by using the method of dividing the charge cover into micro elements. A series of important parameters, such as jet head velocity, longitudinal velocity distribution and critical penetration velocity, are obtained. The results show that in the process of penetration of 45 steel target plate by jet, the effective jet produced by the charge cover with an angle of 60 掳is the jet section formed by the microelements of the charge cover with a velocity of more than 550 m / s. The high speed section of the effective jet (v 鈮，
本文编号：2313426
[Abstract]:The forming process of rectangular perforating ejection flow and the process of penetrating the target plate are numerically simulated, and the motion law and the effective structure of the jet are studied by using the method of dividing the charge cover into micro elements. A series of important parameters, such as jet head velocity, longitudinal velocity distribution and critical penetration velocity, are obtained. The results show that in the process of penetration of 45 steel target plate by jet, the effective jet produced by the charge cover with an angle of 60 掳is the jet section formed by the microelements of the charge cover with a velocity of more than 550 m / s. The high speed section of the effective jet (v 鈮，
本文编号：2313426
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