强爆轰驱动超高速碎片发射装置设计因素分析

为了得到发射装置设计因素和超高速碎片性能间的关系，考虑了药型罩的材料、炸药种类、装药长径比、药型罩的锥角、药型罩的厚度、药型罩顶部靠近装药侧的曲率半径等设计因素，采用AUTODYNTM，结合正交试验，对超高速碎片的发射过程进行数值模拟。结果表明，3种发射装置结构分别可以提供质量为1.533 g的紫铜碎片、速度为11.649 km/s的铝碎片、动能为85.6 kJ的铝碎片；2种发射装置结构均可以提供质量大于1 g、速度高于11 km/s的密实结构圆柱状碎片。验证了仿真方法的可信性，对影响碎片性能的设计因素进行了分析、排序,并得到了这些设计因素与碎片质量、速度、动能的关系。
In order to explore the relations between design factors of the launcher and performance of the produced hypervelocity fragment, the AUTODYNTM-employed numerical simulation towards launch process was performed repeatedly under the orthogonal experiment design framework. Design factors include explosive type, diameter ratio of charge, material type, thickness, taper angle and radius of the top close to charge chamber for liner part were considered. Multiple target launcher designs were demonstrated: three of which were capable to provide the red copper fragment with the mass of 1.563 g, the aluminum fragment with the velocity of 11.649 km/s and the aluminum one with the kinetic energy of 856 kJ respectively; two of which can produce compact cylindrical fragments with the mass over 1 g and velocity over 11km/s simultaneously. The associated experimental validation was confirmed as well and a further analysis of the design factors was made which explains how they were related to the mass, velocity and kinetic energy of generated fragment.