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基于局部相互作用理论的侵彻弹头部形状优化及仿真
引用本文:邓佳杰,张先锋,葛贤坤,陈东东,郭磊.基于局部相互作用理论的侵彻弹头部形状优化及仿真[J].爆炸与冲击,2017,37(4).
作者姓名:邓佳杰  张先锋  葛贤坤  陈东东  郭磊
作者单位:1. 南京理工大学智能弹药技术国防重点学科实验室,江苏南京,210094;2. 南京理工大学智能弹药技术国防重点学科实验室,江苏南京210094;解放军理工大学爆炸冲击防灾减灾国家重点实验室,江苏南京210007;3. 南京理工大学智能弹药技术国防重点学科实验室,江苏南京210094;中国人民解放军95856部队,江苏南京210000
基金项目:中共中央组织部青年拔尖人才支持计划项目,爆炸冲击防灾减灾国家重点实验室(解放军理工大学)开放基金项目
摘    要:以局部相互作用理论为基础,引入与弹体头部形状相关的开坑计算方法和归一化弹体头部形状方程,给出了任意头部形状弹体侵彻混凝土深度的计算模型.利用最大侵深法,得到了无量纲头部形状控制参数表达式及经典变分头部形状优化设计方法.理论计算及弹靶分离仿真模拟计算结果与实验结果吻合较好.研究结果表明:弹体头部相对半径较小时,球头锥形和球头卵形弹体优化后得到的头部形状分别为尖头锥形和尖头卵形;优化截头弹体的侵彻深度大于优化尖头弹体,而优化截锥形弹体的侵彻深度最大;弹体头部形状对弹体侵彻过载的影响显著,优化弹体头部形状可以有效地提高侵彻深度.

关 键 词:侵彻弹  混凝土靶  局部相互作用模型  弹体头部形状优化

Nose-shape optimization and simulation of projectiles penetrating into concrete target based on local interaction theory
Deng Jiajie,Zhang Xianfeng,Ge Xiankun,Chen Dongdong,Guo Lei.Nose-shape optimization and simulation of projectiles penetrating into concrete target based on local interaction theory[J].Explosion and Shock Waves,2017,37(4).
Authors:Deng Jiajie  Zhang Xianfeng  Ge Xiankun  Chen Dongdong  Guo Lei
Abstract:Based on the local interaction theory,we proposed a penetration depth model for projectiles with an arbitrary nose-shape penetrating into a concrete target in consideration of the cratering stage related to nose-shape and normalized nose-shape function.Furthermore,using the method of maximum depth of penetration,we presented an expression about the normalized control parameter of the nose-shape and the classical variational optimization of the nose-shape.The local interaction model prediction and simulation results accord well with the experimental data of different projectile nose shapes.The optimal analysis and simulation show that,when the relative radius of the projectile nose is small,the optimal spherical-tip projectile is similar to corresponding optimal sharp-tip projectile,and the optimized truncated-tip projectiles have better penetration performance than that of the corresponding sharp-tip projectile.Compared with other nose-shaped projectiles,the optimized truncatedconical projectile has a relatively greater penetration depth.As the shape of the projectile nose affects its overload in the penetration process,the optimized shape of the projectile nose can effectively improve the penetration depth of the projectile.
Keywords:penetration projectile  concrete target  local interaction model  nose-shape optimization of projectile
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