钢筋混凝土介质高速侵彻机理研究

项目名称： 钢筋混凝土介质高速侵彻机理研究

项目编号： No.51278250

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 建筑科学

项目作者： 王晓锋

作者单位： 南京理工大学

项目金额： 80万元

中文摘要： 本项目紧密围绕"钢筋混凝土高速侵彻"这一重大国防研究背景，在目前国内700m/s速度以下侵彻机理研究较为完善的基础上，针对850m/s以上钢筋混凝土高速侵彻过程中的三个关键科学问题：介质的损伤演化规律、高速侵彻阻力特性规律、侵彻效率形成机理等开展研究。获得钢筋混凝土介质的损伤函数模型、损伤演化方程，建立开坑阶段弹体偏转的理论模型，推导出介质对侵彻弹体的阻力方程，建立高速侵彻的理论模型，寻求撞击速度、材料破碎、弹体的强度和熔点、混凝土密度和强度等因素对高速侵彻的影响规律，建立弹体质量侵蚀模型，揭示侵彻效率的形成机理，得到侵彻深度随撞击速度的拐点阈值（侵彻效率）。本项目研究将填补我国在钢筋混凝土介质高速侵彻理论研究方面的空白，为深侵彻技术发展奠定理论基础。

中文关键词： 高速侵彻；混凝土介质；损伤；侵蚀；侵彻弹道稳定性

英文摘要： This project focuses on high velocity penetration. With the foundation of theory research on low speed(less than 700m/s) penetration, this project studies 3 important scientific problems to be solved in the research of high velocity(greater than 850m/s) impact into reinforced concrete medium. They are the law of damage evolution of reinforced concrete, law of high velocity penetration resistance and the law of high speed penetration mechanism and penetration efficiency. We study the damage function model and damage evolution equation of reinforced concrete medium.By building theory model for missile body deflection at pit phase, we get the resistance posed by medium on missile body.By building high velocity theory model, we obtain deep penetration dynamic laws which will explain high speed penetration mechanism at high speed. Through study on effect law from factors like impact velocity, material fragmentation, thermodynamics products, missile body strength and melting point and concrete density and strength, we build the high velocity penetration model with mass erosion and point out the mechanism for penetration efficiency so as to acquire knee effect of penetration depth as velocity increases (penetration efficiency). This projiect will fill the gaps on domestic development of the theory study of high veloci

英文关键词： high speed penetration；reinforced concrete；damage evolution equation；erosion effect；non-normal penetration trajectory