波阻抗梯度飞片的特性研究

Research on the Characteristics of Flier-Plate Material with Graded Impedance

基于波阻抗梯度飞片撞击二次飞片时的准等熵压缩特性,给出了波阻抗梯度飞片的设计原则.根据该设计原则,设计了一种由TPX、镁合金、铝、钛、铜、钽等材料组成的波阻抗梯度飞片,并计算了该梯度飞片的波阻抗分布.计算结果表明,该梯度飞片前后表面的波阻抗与二级飞片波阻抗的比值分别为0.08和2.45.

Based on the quasi-isentropic property of flier-plates with graded wave impedance impacting on the secondary flier-plate, design rules for flier-plates with graded wave impedance are proposed. According to the design rules, a flier-plate consisting of a set of materials including TPX, MB2, Al, Ti, Cu and Ta is presented, and the impedance distribution of this flier-plate is calculated. The results show that the wave impedance ratios of front and rear surfaces of the to the flier-plate to that of the secondary flier-plate are 0.08 and 2.45 respectively.