摘要
为研究高速动能弹在岩石中的侵彻效应,在高速弹道炮上进行弹体对岩石靶体高速正侵彻的模型试验,试验最高弹体速度为1450m/s,得出侵彻深度与侵彻速度之间的关系,并建立弹体速度不大于弹体极限速度时弹体侵彻深度的经验公式,该公式与试验结果具有良好的一致性。同时,分析模型试验靶体破坏情况,对于一定尺寸的弹体和靶体,不同弹体速度将产生不同的靶体破坏类型。研究高速撞击条件下弹体侵彻能力、侵彻极限速度和质量损失等问题,分析影响弹体极限速度和质量损失的相关因素,可对高速动能弹侵彻岩石的侵深、加速度和质量损失等主要参数进行评估,为弹体战斗部和防护工程的设计提供有力的参考。与在混凝土靶体上的高速侵彻试验进行对比,说明无风化的硬质岩石可以作为良好的防护工程材料。
In order to study the penetration effects of high-velocity projectiles on rocks,the model experiments of high-velocity projectile penetrating rock targets are carried out by using high-velocity ballistic gun,which the highest experimental velocity reaches 1 450 m/s. The relationship between penetration depth and velocity is obtained. The empirical equation of penetration depth is established when the bullet speed is lower than the terminal speed;and the equation has a good compatibility with experimental results. The damage types of model experimental targets are analyzed;the results show that various damage types of targets are generated under different projectile velocities for a given bullet and target. The penetration performance,terminal velocity and mass loss of projectile under high impact velocity are investigated;and the elements which affect the terminal velocity and mass loss of projectile are analyzed. It can be used to predict the main parameters such as penetration depth,acceleration,mass loss rate and so on;and it also provides an effective reference to the design of projectile head and protective engineering. The results show that unweathered hard rock can be used as materials in protective engineering after comparing the experiments of concrete plate targets.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2010年第A02期4207-4212,共6页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(10672186)
关键词
岩石力学
高速侵彻
岩石靶体
比例模型试验
质量损失
rock mechanics
high-velocity penetration
rock target
scale-model experiment
mass loss
