摘要
针对不确定信息下弹丸近炸破片毁伤效能难以评估的问题,该文基于破片飞散特性和目标毁伤准则建立一种地面装甲车毁伤概率计算模型。根据空中弹丸与地面装甲车的空间关系,分析破片在飞行过程中的衰减特性,研究破片对装甲车的侵彻效果,结合弹丸近炸破片场的散布密度函数,制定装甲车部件毁伤准则;根据装甲车各部件的毁伤权重和易损面积的关系,构建单枚破片毁伤概率计算函数;形成破片数量和侵彻面积条件下的装甲车毁伤概率计算模型。通过计算与分析,给出了不同弹丸炸点高度、不同入射角以及装甲车不同易损区权重差异等条件下破片对装甲车的毁伤效果;同时,采用ANDYS/LS-DYNA仿真模拟不同速度破片对目标的侵彻过程。结果表明,在弹丸与装甲车的交汇过程中,近炸高度越小,弹丸入射角越小,装甲车被毁伤的概率越大;同时,等效靶板所受破片毁伤能量与破片侵彻速度呈正比,并且破片作用在装甲车的破片数量越多,破片对装甲车的毁伤效果越明显。
It is difficult to evaluate the damage efficiency of projectile near-burst warhead fragments under uncertain information.In order to solve this problem,this paper establishes a damage probability calculation model of ground armored vehicles based on warhead fragment dispersion characteristics and target damage criterion.According to the spatial relationship between aerial projectiles and ground armored vehicles,the attenuation characteristics of warhead fragments during flight are analyzed,and the penetration effect of warhead fragments on armored vehicles is studied.Combined with the dispersion density function of projectile near the explosion warhead fragment field,the damage criterion of armored vehicle components is formulated.Based on the relationship between the damage weight and the vulnerable area of each component of the armored vehicle,a single warhead fragment damage probability calculation function is constructed.The damage probability calculation model of armored vehicles when warhead fragment number and penetration area is formed.Through the calculation and analysis,the damage effect of warhead fragments on armored vehicles is given under the conditions of different explosion heights,different incident angles,and different weights of vulnerable areas of armored vehicles.ANDYS/LS-DYNA is used to simulate the penetration of warhead fragments with different velocities on the target.The results show that in the intersection process of projectile and armored vehicle,the smaller the near explosion height,the smaller the projectile incident angle,the greater the probability of armored vehicle damage.And the damage energy of warhead fragments on the equivalent target is proportional to the penetration velocity of warhead fragments,and the more warhead fragments act on armored vehicles,the more obvious the damage effect of warhead fragments on armored vehicles.
作者
卢莉萍
张晓倩
李翰山
Lu Liping;Zhang Xiaoqian;Li Hanshan(School of Computer Science and Engineering,Xi’an Technological University,Xi’an 710021,China;School of Electronic and Information Engineering,Xi ’ an Technological University,Xi ’ an 710021,China)
出处
《南京理工大学学报》
CAS
CSCD
北大核心
2021年第4期497-503,共7页
Journal of Nanjing University of Science and Technology
基金
国家自然科学基金(62001365,62073256)
陕西省重点研发计划项目(2020GY-125)。
关键词
弹丸近炸
散布
破片
装甲车
入射角
易损区
毁伤
projectile near-burst
dispersion
warhead fragment
armored vehicle
incidence angle
vulnerable area
damage
作者简介
卢莉萍(1975-),女,博士,副教授,主要研究方向:数字图像处理、智能传感与信息融合,E-mail:llp21@126.com。
