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本论文针对弹丸侵彻目标时电火工品力学过载的损伤特性问题，利用空气炮试验装置进行了子弹与钢靶板的力学过载碰撞试验，并根据过载前后电火工品的状态分析对比，总结出电火工品的损伤特性。 以A型独脚电雷管和 B型电雷管为试验样品，采用空气炮实验方法研究两类电雷管在高过载条件下的性能和结构变化。分别在 60000g、80000g、100000g 和120000g的加速度峰值下进行了冲击加载试验。加载前、后，测量电雷管的尺寸、电阻值和拍摄X 光照片；分析它们内部和性能的变化，并对电雷管过载环境后输出威力进行了测试。试验结果表明，采用空气炮对样品进行横向加载下，电雷管的桥丝易断裂，空气炮输出端加载，桥丝电阻变化很小；利用空气炮开展输出端加载时，电雷管的电极塞内陷幅度较大，并且内陷的幅度与加速度值成正相关；空气炮加载时，以惯性加载为主；加载前后样品的输出威力变化不大。7609
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关键词: 电雷管 高过载 空气炮
Title: Dynamic Properties of Electric Initiator under Air gun loading
Abstract
This thesis focuses on the problem of the initiator’s mechanical overload
damage characteristics when the projectile penetrates into the target. The
air gun technique was used to perform the dynamic characteristic of
detonators under high-g environment of the bullet penetrating the steel
target, then analysis and compare the state of initiator before and after
the high overloading, Summed up the damage characteristics of initiator.
The method of air gun is used to research the performance and structural
changes of type A electric detonators and type B detonator under high
overload condition. The electric detonators size and resistance changes
are measured in different acceleration values: 60 000g, 80 000g, 100 000g
and 120 000g，at the same time the X-ray photographs is taken, and the state
of the bridge wire is also observed under the stereo microscope. And
electric detonators was conducted the test of output power under overload
conditions. The results shows that, the electric detonator bridge wire is
easily broken under lateral loading ,and its resistance change is very
small under output loading, The electric detonators electrode plug
retraction magnitude large while using air guns to conduct the output
loading. And the rate of retraction is positively related to acceleration
value. Inertia loading is the major factor in the air gun loading. The
output power of sample changed little around the test.
Keywords: initiator high overload gas gun
目 次
1 引言 1
1.1 研究的背景 . 1
1.2 研究的目的和意义 . 1
1.3 火工品冲击过载模拟试验技术研究现状 . 2
1.3.1 国外研究现状 . 2
1.3.2 国内研究现状 . 3
1.3.3 空气炮模拟试验技术 . 4
1.4 本论文主要研究内容 . 5
2 空气炮过载模拟试验技术研究 6
2.1 概述 . 6
2.2 空气炮加速度过载试验系统设计 . 6