波阻抗梯度飞片的特性研究  

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

作　　者：何远航[1] 董良慈[1] 张庆明[1] 

机构地区：[1]北京理工大学宇航科学技术学院,北京100081

出　　处：《北京理工大学学报》2007年第12期1050-1052,共3页Transactions of Beijing Institute of Technology

基　　金：国家"八六三"计划项目(701114)

摘　　要：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.

关 键 词：梯度飞片 波阻抗 超高速发射 

分 类 号：O347.1[理学—固体力学]