延期体抗高加速度过载的结构加固性能研究  

Reinforce Structures of Delay Element in High Acceleration Environment

作　　者：蔡吉生[1] 沈瑞琪[1] 叶迎华[1] 武双章[1] 胡艳[1] 

机构地区：[1]南京理工大学化工学院,江苏南京210094

出　　处：《火工品》2007年第2期47-49,共3页Initiators & Pyrotechnics

摘　　要：本文应用Hopkinson压杆试验技术和仿真模拟的方法，研究了5种不同管壳尺寸的延期体在6-17万个g值的加速度过载作用下的延期性能。比较了加载前后不同尺寸延期体的燃速变化，分析不同尺寸的延期体抗过载的性能。实验结果表明：增加延期体管壳长度，延期体抗加速度过载的加固效果不明显；增加延期体管壳外径，经高过载加载后延期体燃速散布范围小，延期药抛撒量减少，变形量减少，抗高过载能力效果明显。In the environment of high over-load, the delay performances of 5 charge shells with different size of delay elements were studied by Hopkinson bar technique from 60 000g to 170 000g, and were simulated. The burning rate of different size delay elements after over-load were compared with that of the before, and the performances of elements were analyzed. The test results show that the length of element has less effect on performance than diameter of delay element. The delay element with large diameter has small division of burning rate after over-load, and the projected weight of charge is decreased, the deformation value of the element is lowered. So enlarging diameter of element is efficient to reinforce the ability of counteracting overload.

关 键 词：延期体 HOPKINSON压杆 高过载 燃速 

分 类 号：TJ450.6[兵器科学与技术—火炮、自动武器与弹药工程]