项目名称: 新型贫铀复合材料冲击诱导燃爆的失稳机理研究
项目编号: No.11202028
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 数理科学和化学
项目作者: 董永香
作者单位: 北京理工大学
项目金额: 30万元
中文摘要: 如何更好地开拓应用贫铀核废料是当今的前沿性课题。新型贫铀复合材料是通过贫铀合金与非金属复合而成的一种亚稳态材料,具有密度高、化学性能活泼和冲击燃爆反应等特性。但在其配方设计和应用中所遇到的难点是,冲击反应的不稳定性、冲击条件下的安全性与冲击燃爆的高效性,这些严重制约着该贫铀复合材料的研究进展。为此,本项目拟通过冲击加载实验、理论分析与数值仿真相结合的方法,开展新型贫铀复合材料冲击诱导燃爆反应的失稳机理研究,主要包括:①研究材料组分配比度、热处理工艺等对材料动力行为与微细观特性的影响规律;②研究典型复合材料冲击反应的燃爆特性,获得不同冲击速率、材料动力特性、破碎性及环境条件对冲击诱导反应的影响规律;③冲击反应的失稳过程的参量表征及冲击诱导燃爆反应的模型建立,材料配方优化设计方法。所研究结果可为该材料的研制与应用提供重要的理论基础和科学依据,促进多学科的交叉发展。
中文关键词: 贫铀材料;燃爆反应;反应特性;临界阈值;
英文摘要: How to exploit effectively the nuclear waste of depleted uranium is today's advanced topics. New depleted uranium composite materials are compounded with the depleted uranium alloy and nonmetal.And they are metastability materials, with a high density, chemical reactivity and impact-induced reaction charateristics . But in its recipe design and application, the difficult points which encountered are the instability of impact-induced reactions, the security under impact conditions and the blasting efficiency. These sides restrict seriously the depleted uranium research progress of composite materials. Therefore, this project will carry out the instability mechanism of impact-induced reactions on a new composite material, through the impact loading experiment, the theoretical analysis and numerical simulation method. The contents include: ① The influence law of dynamic behavior of materials and micro-characteristics with the different composition and heat treatment process of materials; ② The research of typical composite material impact reaction explosion characteristics, and the law of induced reactions with different impact velocity, dynamic features of materials and fragmentation and the environmental conditions; ③ The parameter characterization of impact-induced instability, the impact-induced reaction model
英文关键词: Depleted uranium materials;impact-induced reaction;characteristics of blasting reaction;critical threshold;