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弹丸侵彻钢筋混凝土的工程解析模型
引用本文:周宁,任辉启,沈兆武,何祥,刘瑞朝,吴飚.弹丸侵彻钢筋混凝土的工程解析模型[J].爆炸与冲击,2007,27(6):529-534.
作者姓名:周宁  任辉启  沈兆武  何祥  刘瑞朝  吴飚
作者单位:1.中国科学技术大学力学与机械工程系,安徽 合肥 230026;
基金项目:国家重点基础研究发展规划项目(51309-1-6)
摘    要:既考虑了弹丸侵彻过程中受到的动阻力与静阻力,又考虑了弹丸与钢筋发生碰撞时钢筋对弹丸的直接阻力,提出了弹丸侵彻钢筋混凝土的工程解析模型。不同初速下弹丸的侵彻深度、侵彻过程中弹丸的位移、速度和负加速度时间历程的计算结果与测试数据符合很好,弹丸过载在12 000g~15 000g之间。该解析模型能够较真实的描述弹丸侵彻钢筋混凝土过程中的运动状态,并且该模型能够分析配筋结构、配筋尺寸、网眼尺寸对侵彻深度和侵彻过程的影响。

关 键 词:爆炸力学    侵彻    空腔膨胀理论    钢筋混凝土
文章编号:1001-1455(2007)06-0529-06
修稿时间:2006年5月11日

An engineering analytical model for projectiles to penetrate into semi-infinite reinforced concrete targets
ZHOU Ning,REN Hui-qi,SHEN Zhao-wu,HE Xiang,LIU Rui-zhao,WU Biao.An engineering analytical model for projectiles to penetrate into semi-infinite reinforced concrete targets[J].Explosion and Shock Waves,2007,27(6):529-534.
Authors:ZHOU Ning  REN Hui-qi  SHEN Zhao-wu  HE Xiang  LIU Rui-zhao  WU Biao
Institution:1.Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, Anhui, China;2.Luoyang Institute of Hydraulical Engineer, Luoyang 471023, Henan, China
Abstract:Dynamic and static resistances as well as resistance of steel bar to projectile when projectile colliding with steel bar are taken into consideration in the proposed engineering analytical model.Penetration depth and displacement,deceleration,velocity histories of projectiles with different impact velocities during penetration are calculated by using the proposed engineering analytical model and these calculated results are in good agreement with the experimental results.The peak rigid-body accelerations are between-12 000 g and-15 000 g(acceleration of gravity).The proposed model can represent the movement states of a projectile during its penetrating a semi-infinite reinforced concrete target,and it can be used to analyze the effect of configuration,size and mesh size of a steel bar on penetration depth and process.
Keywords:mechanics of explosion  penetration  cavity-expansion theory  reinforced concrete
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