A computational model for impulse coupling between sheet explosive and target

Lu Qiang; Wang Zhanjiang; Liu Xiaoxin; Guo Zhiyun; Wu Yujiao

doi:10.11883/1001-1455(2017)01-0084-08

Volume 37 Issue 1

Jan. 2017

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Lu Qiang, Wang Zhanjiang, Liu Xiaoxin, Guo Zhiyun, Wu Yujiao. A computational model for impulse coupling between sheet explosive and target[J]. Explosion And Shock Waves, 2017, 37(1): 84-91. doi: 10.11883/1001-1455(2017)01-0084-08

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Lu Qiang, Wang Zhanjiang, Liu Xiaoxin, Guo Zhiyun, Wu Yujiao. A computational model for impulse coupling between sheet explosive and target[J]. Explosion And Shock Waves, 2017, 37(1): 84-91. doi: 10.11883/1001-1455(2017)01-0084-08

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A computational model for impulse coupling between sheet explosive and target

doi: 10.11883/1001-1455(2017)01-0084-08

Northwest Institute of Nuclear Technology, Xi'an 710024, Shaanxi, China

Received Date: 2015-09-10
Rev Recd Date: 2016-01-18
Publish Date: 2017-01-25

Abstract

Abstract

The sheet explosive can be used to simulate the space structure response caused by the high-power pulse X-rays, and the impulse coupling of the sheet explosive and the target is the basis for designing the simulated load. Based on the numerical results by the nonlinear finite element code, the computational modeling for the impulse coupling of the sheet explosive and the target is formulated in consideration of the effect on the specific impulse of the sheet explosive caused by the rarefaction of the border of the sheet explosive and the reflection of the support for connecting the mild detonating fuse and the sheet explosive. The analytic results reveal that the increment of the specific impulse caused by the rarefaction of the border is approximately in inverse relation to the diameter of the sheet explosive, and that caused by the reflection of the support is approximately in inverse relation to the square of the diameter of the sheet explosive. The specific impulse for the sheet explosive converges to the limit specific impulse related to the depth of the sheet explosive as the diameter of the sheet explosive reaches infinity. Both the rarefaction for the border of the sheet explosive and the reflection of the support are negligible with the diameter of the sheet explosive increasing. There exists a critical diameter and when it is equaled by the diameter of the sheet explosive, the specific impulse for the sheet explosive equals the limit specific impulse as the diameter of the sheet explosive reaches infinity.
- mechanics of explosion,
- impulse coupling,
- specific impulse,
- sheet explosive

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References(17)

References

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