Effects of main components on energy output characteristics of thermobaric explosive——A case study of typical formulations

作     者：Yunfei Zhao Yaning Li Zhiwei Han Peng Bao Jingyan Wang Boliang Wang 

作者机构：School of Chemistry&Chemical EngineeringNanjing University of Science and TechnologyNanjing210094China School of Safety Science&EngineeringNanjing University of Science and TechnologyNanjing210094China 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2024年第38卷第8期

页      面：205-216页

核心收录：

学科分类：082604[工学-军事化学与烟火技术] 08[工学] 0826[工学-兵器科学与技术] 

基　　金：the support of the National Natural Science Foundation of China(Grant No.12302440) China Postdoctoral Science Foundation(Grant No.2023M741713) 

主　　题：Thermobaric explosives Components Overpressure Fireball Afterburning reaction 

摘      要：As a kind of high-efficiency explosive with compound destructive capability, the energy output law of thermobaric explosives has been receiving great attention. In order to investigate the effects of main components on the explosive characteristics of thermobaric explosives, various high explosives and oxidants were selected to formulate five different types of thermobaric explosive. Then they were tested in both open space and closed space respectively. Pressure measurement system, high-speed camera,infrared thermal imager and multispectral temperature measurement system were used for pressure,temperature and fireball recording. The effects of different components on the explosive characteristics of thermobaric explosive were analyzed. The results showed that in open space, the overpressure is dominated by the high explosives content in the formulation. The addition of the oxidants will decrease the explosion overpressure but will increase the duration and overall brightness of the fireball. While in closed space, the quasi-static pressure formed after the explosion is positively correlated with the temperature and gas production. In addition, it was found that the differences in shell constraints can also alter the afterburning reaction of thermobaric explosives, thus affecting their energy output characteristics. PVC shell constraint obviously increases the overpressure and makes the fireball burn more violently.