Energy-release characteristics of typical reactive materials under explosive loading

DU Ning; ZHANG Xianfeng; XIONG Wei; YANG Ying; HUANG Bingyu; CHEN Haihua

doi:10.11883/bzycj-2019-0239

Volume 40 Issue 4

Apr. 2020

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DU Ning, ZHANG Xianfeng, XIONG Wei, YANG Ying, HUANG Bingyu, CHEN Haihua. Energy-release characteristics of typical reactive materials under explosive loading[J]. Explosion And Shock Waves, 2020, 40(4): 042301. doi: 10.11883/bzycj-2019-0239

Citation:

DU Ning, ZHANG Xianfeng, XIONG Wei, YANG Ying, HUANG Bingyu, CHEN Haihua. Energy-release characteristics of typical reactive materials under explosive loading[J]. Explosion And Shock Waves, 2020, 40(4): 042301. doi: 10.11883/bzycj-2019-0239

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Energy-release characteristics of typical reactive materials under explosive loading

doi: 10.11883/bzycj-2019-0239

1.
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
Jiangsu Yongfeng Mechanics Co. Ltd., Nanjing 210014, Jiangsu, China

Received Date: 2019-04-23
Rev Recd Date: 2019-07-07

Available Online: 2020-02-25

Publish Date: 2020-04-01

Abstract

Abstract

In order to study the reaction characteristics of reactive materials under explosive loading, two typical reactive materials, namely Al/PTFE and Al/Ni, as well as two inert materials, namely Al₂O₃/PTFE and Al₂O₃/PTFE/W, were manufactured by powder compaction. Explosion-driven tests were conducted on the four materials, by combining with the high-speed photography technology, far-infrared thermal imager testing technology and peak overpressure testing technology. The characteristics of explosive fireball, distribution of temperature and peak overpressure of blast shock waves were analyzed for different materials. Furthermore, the chemical energy released from the reactive materials was considered in the empirical calculation model to estimate the peak overpressure of blast shock waves. The influence of the released energy on the blast shock wave was analyzed by the model. The results show that during the explosion driving process, the reactive materials undergo such stages as reaction under strong loading, debris generation and scattering around, impact on steel plates and subsequent reaction. Reactive materials can strengthen the air shock wave produced by explosive explosion, and only part of the chemical reaction occurs at the moment of explosion loading.
- reactive materials,
- explosive loading,
- shock-induced chemical reaction,
- energy-release characteristics

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References

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