网络爆轰驱动飞片的设计技术

摘要

提出使用炸药网络爆轰技术,设计了一种新型的低速飞片击靶加载装置,结合数值模拟和实验测量,对驱动飞片的速度、平面性及装置结构参数进行了系统分析.实验结果表明,无氧铜飞片可以使直径100 mm、厚度3 mm的飞片在飞行距离2 mm内达到稳定的飞行状态,击靶速度在200～350m/s范围内连续可调,飞片击靶平面范围大、速度均匀、平面性好,为实现低冲击应力的一维应变加载提供了参考.%New equipment which could drive a planar flyer via the network detonation technique to generate low impact stress and low impact velocity was designed. The velocity and planarity of the flyer and the other equipment parameters were analyzed by using experimental measurement and numerical simulation. Results indicate that the equipment could drive the high-purity OFHC flyer with 100-mm diameter and 3-mm thickness approaching a stable velocity after about 2 mm flight. The velocity of the flyer is continuously adjustable from about 200 to 350 m/s with good planarity and uniformity. The network detonation-loading method can be used to launch a flyer plate at low velocity.