Shock-induced energy release behaviors of reactive materials

Abstract

Reactive material is a new type of material with energy-releasing characteristics. It can react chemically and release a large amount of chemical energy under the high pressure and high temperature caused by the impact. Therefore, it has a wide range of potential applications in military fields such as fragments and energy-splitting warheads. In order to realize the design and control of the energy release process of reactive material and promote its weaponized application process, it is necessary to solve a series of complicated mechanical-thermal-chemical coupling problems in the impact-induced energy release behaviors of reactive materials. In the past 40 years, domestic and foreign scholars have carried out a lot of research on the impact-induced energy release behavior of reactive materials. Based on this, this paper systematically combs the research status of the impact-induced chemical reaction mechanism, kinetics and related effects of reactive materials, focusing on the research progress in three aspects: the experimental characterization technology of impact-induced energy release of materials, the theoretical model of impact-induced chemical reaction and the numerical simulation method of shock compression considering the mechanical-thermal-chemical coupling effects. Finally, the summaries are carried out and the future research work, challenges and suggestions are proposed. It is concluded that domestic and foreign scholars have accumulated a certain amount of research on the energy release behaviors of reactive materials, but there is still a lack of richer, finer and intuitive characterization and exploration for the real-time diagnosis of ultra-fast chemical reaction behavior in experiments. However, for the related theoretical and numerical simulation studies, the mechanical thermal chemical theoretical model which can fully describe the impact energy release behavior of active materials has not been established, and there is no effective method to describe the impact energy release behaviors from the macro scale. Therefore, the three aspects of research content, ultra-fast chemical reaction experimental characterization technology, macro-level mechanical-thermal-chemical mechanism and model establishment and its numerical simulation application, and preparation of reactive materials with adjustable properties, will be the focus of attention in promoting the future military application of reactive materials.