摘要
针对反跑道弹药战斗部对机场跑道内爆毁伤效应评估的需求,为系统开展机场跑道在装药内爆载荷作用下的毁伤效应研究与构建工程函数模型,在量纲分析的基础上开展不同装药质量、不同装药埋深下的机场跑道内爆毁伤实验和数值仿真,探究装药量和装药埋深对机场跑道毁伤形态以及毁伤场参数的影响规律。研究结果表明:装药量一定时,有效毁伤半径Red随装药埋深的增加呈先增大、后减小的趋势;装药埋深一定时,毁伤效应参量随装药量的增加而增大;装药量和装药埋深的最适匹配可达到理想的毁伤效果。基于实验与数值仿真研究获得的弹坑形态和裂纹特征与跑道内爆炸作用机理分析,提出将毁伤模式和毁伤场特征参量相结合的评估方法来有效表征多层混凝土介质内爆毁伤效应,采用敞坑、隆起和隐坑3种毁伤模式来描述跑道的破坏形态,采用特征参量弹坑半径Rc、有效毁伤半径Red、最大爆腔半径Ric,以及弹坑深度H定量描述跑道内爆毁伤场区域;结合大量仿真和实验数据拟合得到机场跑道内爆毁伤模式和毁伤场特征参量的工程化函数模型,可对机场跑道内爆毁伤效应进行快速预测。
To systematically investigate the damage effects of airfield runways subjected to charge implosion and construct an engineering function model,experiments and numerical simulations are conducted using dimension analytics to study the influence of charge quality and buried depth levels on damage modes and damage parameters of airfield runways.Results indicate that the effective damage radius(R ed)initially increases and then decreases with an increase in buried depth of charge at a constant charge quantity.Conversely,damage parameters increase with an increasing charge quantity when the buried depth is constant,and an optimal matching of explosion energy and buried depth can achieve the ideal damage.Additionally,based on the analysis of the mechanism of implosion in the runways,an evaluation method which combines damage mode and damage parameters to effectively characterize the damage of implosion in airfield runways is proposed.Based on the crater pattern and cracks obtained from experiments and numerical simulations,there are three damage modes of the runways:open crater,heave crater,and camouflet.The crater radius R c,effective damage radius R ed,maximum internal cavity radius R ic,and actual crater depth H are used as characteristic parameters to quantitatively describe the damage within the runways.An engineering model to predict the damage mode and damage parameters of implosion on airfield runways is also constructed based on a large number of simulations and experimental data,achieving rapid prediction of airfield runway implosion damage effects.
作者
胡榕
姜春兰
卢广照
王在成
毛亮
HU Rong;JIANG Chunlan;LU Guangzhao;WANG Zaicheng;MAO Liang(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China;China Research and Development Academy of Machinery Equipment,Beijing 100089,China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2023年第4期929-939,共11页
Acta Armamentarii
基金
装备预先研究项目(2017年)。
关键词
机场跑道内爆炸
毁伤效应
毁伤模式
工程化函数模型
internal explosion of airfield runway
damage effect
damage mode
engineering computational model
