發(fā)布時間：2018-11-05 20:53

【摘要】：對矩形射孔彈射流的形成過程及其侵徹靶板的過程進行數(shù)值仿真研究,并采用將藥型罩進行微元劃分的方法,研究藥型罩微元的運動規(guī)律以及射流的有效結(jié)構(gòu),獲得了射流的頭部速度、縱向速度分布、射流的臨界侵徹速度等一系列評估射流威力特性的重要參數(shù)。結(jié)果表明:對于45號鋼質(zhì)靶板,在射流對靶板進行侵徹的過程中,張角為60°的藥型罩產(chǎn)生的有效射流為速度超過550 m/s以上的藥型罩微元所形成的射流段;有效射流的高速段(v≥1300 m/s)由藥型罩頂部材料組成,有效射流的中速段(1000 m/s≤v1300 m/s)由藥型罩的中部及中上部材料組成,沿藥型罩母線方向靠近底部約0.2倍母線長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 擄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，

本文編號：2313426