两种手枪弹正侵彻混凝土的变形量及其规律  

On Deformation of Two Kinds of Pistol Bullets during Penetrating into Concrete

作　　者：魏伟[1,2,3] 王浩圣 袁瑞 陈亚旭 李金铭 董方栋 王建中 WEI Wei;WANG Haosheng;YUAN Rui;CHEN Yaxu;LI Jinming;DONG Fangdong;WANG Jianzhong(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China;No.208 Research Institute of China Ordnance Industries,Beijing 102202,China;Science and Technology on Transient Impact Laboratory,Beijing 102202,China;School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China;Unit 32381 of PLA,Beijing 100000,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 [2]中国兵器工业第208研究所,北京102202 [3]瞬态冲击技术重点实验室,北京102202 [4]南京理工大学机械工程学院,江苏南京210094 [5]32381部队,北京100000

出　　处：《兵工学报》2021年第S01期59-67,共9页Acta Armamentarii

基　　金：瞬态冲击技术重点实验室基金项目(6142606203304)。

摘　　要：弹头变形量的大小能够真实地反映出弹头侵彻混凝土的速度和角度,经常作为案件侦破过程中弹道重建、判断射击位置的重要依据。采用某型9 mm手枪弹和51式7.62 mm手枪弹两种典型手枪弹对混凝土开展不同速度的正侵彻试验及仿真,建立两种典型手枪弹侵彻混凝土后弹头变形特征量随侵彻速度变化的关系模型。通过弹头特征函数Y分析弹头变形特征,结果表明:函数Y值与入射速度的关系可看作分段线性函数,分段点阈值速度与被甲开裂破碎临界速度一致;对于某型9 mm手枪弹,被甲开裂破碎临界速度为130 m/s左右;对于51式7.62 mm手枪弹,被甲开裂破碎临界速度为230 m/s左右;函数Y能够很好地反映弹头不同速度侵彻混凝土后的变形规律。The bullet deformation can truly reflect the speed and angle of bullet penetrating into the concrete,which are often used as an important basis for the reconstruction of trajectory and the judgment of shooting position in the process of case detection.Two types of pistol bullets penetrating into concrete at different speeds were test and simulated.The results show that the bullet diameter increases with the increase in impact velocity,and the bullet length decreases with the impact velocity.The relation model of bullet deformation characteristics and penetration velocity is established.The function Y is established to analyze the deformation characteristics of bullet.The relationship between Y value and impact velocity can be regarded as a piecewide linear function.The piecewise speed is consistent with the critical speed of armor cracking and breaking.The critical speed of armor cracking and breaking is about 130 m/s for 9 mm bullet and 230 m/s for 51 type 7.62 mm bullet.Function Y can well reflect the deformation law of bullet penetrating into concrete at different speeds.

关 键 词：手枪弹 弹头变形 混凝土 高度变化率 直径变化率 

分 类 号：TJ012.4[兵器科学与技术—兵器发射理论与技术]