高密度合金材料爆炸成型过程中的变形行为与断裂机理研究

For the development of high density, high penetrating performance, low cost of the new type of highly efficient damage EFP warhead, the research on deformation behavior and fracture mechanism in explosive forming process of high density alloy materials will be carried out, with the fracture mechanics models of materials established according to the stress state. This project will reveal the fracture mechanism of materials under explosive loading, determine the required dynamic mechanical properties of EFP liner materials and establish the experimental method for testing the integrity of material under explosive loading, which would help further develop the material selection criteria and design methods of EFP liner. Then new types of high density alloys which are feasible to be used as EFP liner can be designed. With the static and dynamic mechanical properties obtained, the matching design of the liner and the charge structure will be carried out to acquire the quasi-spherical or long rod EFPs. This project will be significant in understanding the deformation behavior and fracture mechanism of materials under explosive loading, and in the selection and design process of EFP liner. The research results will help promote the application of alloy materials, extend material types and selection directions of EFP liner material, which could provide the basis for scientific and theoretical support for the design of EFP.

本项目以发展高密度、高侵彻威力、低成本的高效毁伤爆炸成型弹丸（EFP）为背景，开展高密度合金材料爆炸成型过程中的变形行为与断裂机理研究，依据材料受力状态建立其断裂力学模型，揭示材料爆炸加载条件下的断裂机理，确定EFP药型罩材料所需具备的动态力学性能指标，建立高密度合金材料爆炸加载下成型完好性检验方法，进一步发展EFP药型罩材料选取准则与设计方法。进而设计出可用作EFP药型罩的新型高密度合金材料，获取其静动态力学性能，开展药型罩与装药结构匹配设计，获得准球形或长杆形EFP。对于认识材料爆炸加载条件下的变形行为、材料强爆轰作用下的断裂机理以及如何寻找并设计出可行的新型高密度合金EFP药型罩材料具有重要的指导意义。研究成果能够推进高密度合金材料在EFP药型罩中的应用，扩展EFP药型罩材料的选材种类与方向，为EFP设计提供科学依据和理论支持。

本项目以发展高密度、高侵彻威力、低成本的高效毁伤爆炸成型弹丸（EFP）为背景，开展高密度合金材料爆炸成型过程中的变形行为与断裂机理研究，依据材料受力状态建立其断裂力学模型，揭示材料爆炸加载条件下的断裂机理，确定EFP药型罩材料所需具备的动态力学性能指标，建立高密度合金材料爆炸加载下成型完好性检验方法，进一步发展EFP药型罩材料选取准则与设计方法。进而设计出可用作EFP药型罩的新型高密度合金材料，获取其静动态力学性能，开展药型罩与装药结构匹配设计，获得准球形或长杆形EFP。对于认识材料爆炸加载条件下的变形行为、材料强爆轰作用下的断裂机理以及如何寻找并设计出可行的新型高密度合金EFP药型罩材料具有重要的指导意义。研究成果能够推进高密度合金材料在EFP药型罩中的应用，扩展EFP药型罩材料的选材种类与方向，为EFP设计提供科学依据和理论支持。