弹体侵彻钢筋混凝土靶开坑深度研究  

Investigation on Crater Depth of Projectile Penetrating into Reinforced Concrete Target

作　　者：张爽[1] 武海军[1] 黄风雷[1] ZHANG Shuang;WU Hai-jun;HUANG Feng-lei(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《北京理工大学学报》2018年第6期565-571,共7页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(11390362;11572048);国家部委基础科研资助项目(B1020132071)

摘　　要：研究弹体侵彻靶板的开坑深度,有助于提升侵深和过载的计算精度.首先,通过总结对比现有的开坑深度模型以及试验数据的回归分析,建立了考虑弹体质量和初速度的开坑深度模型.然后,以此为基础给出了弹体侵彻钢筋混凝土靶开坑深度的计算方法.最后,结合作者早前建立的钢筋混凝土动态球形空腔膨胀理论,利用文献试验数据对开坑深度模型进行了应用对比分析.本文模型考虑了弹体质量、初速度以及首层钢筋网埋设深度等因素的影响,可用于分析不同质量、不同初速度弹体侵彻钢筋混凝土靶的开坑深度.The investigation on crater depth can improve the calculation precision of penetration depth and overload.Firstly,a new crater depth model which considered projectile weight and initial velocity was established through the summary and comparison of existing crater depth models and the regression analysis of experimental data.Then,the crater depth calculation method of projectile penetrating into reinforced concrete target was proposed on this basis.Finally,combined with the dynamic spherical cavity expansion theory in reinforced concrete established by the authors earlier,the new crater model was used and analyzed based on the experimental data from references.This model considers projectile weight,initial velocity and laying depth of the first layer of reinforced mesh,and it can be used to predict the crater depths of projectiles with different weights and different initial velocities penetrating into reinforced concrete targets.Especially,this model provides a basis for predicting crater depth of large mass projectile and reinforced concrete.

关 键 词：侵彻 钢筋混凝土 开坑深度 弹体质量 初速度 

分 类 号：O385[理学—流体力学]