Initiation characteristics of missile warhead charge under impact loading

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (11) : 37-41.

CAI Xuanming1，ZHANG Wei2，GAO Yubo1，FAN Zhiqiang1

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Abstract

In the process of a long-range missile attacking underground target, its warhead PBX explosive charge’s initiation damage effect is not enough estimated. Here, initiation characteristics of a missile warhead’s PBX explosive charge under high overload impact load were studied. Based on a two-stage light gas cannon, a series of tests were performed for initiation characteristics of a missile warhead’s PBX explosive charge under transonic speed impact load. Combining test results, numerical simulation and corresponding theoretical analysis, the correlation between energy release behavior and impact load was explored, and the mutual influence mechanism model was established. The results showed that the critical initiation pressure of PBX explosive charge is 5.34 GPa, and its full initiation pressure is 12.39 GPa; the established relation among energy release amount, relative reaction rate and impact load is basically in agreement with experimental data; the results can provide a reference for national defense technology studying.

Key words

impact / initiation / combat department charge / numerical simulation

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CAI Xuanming1，ZHANG Wei2，GAO Yubo1，FAN Zhiqiang1 . Initiation characteristics of missile warhead charge under impact loading[J]. Journal of Vibration and Shock, 2019, 38(11): 37-41

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