Characteristics structure analysis on debris cloud in the hypervelocity impact of disk projectile on thin plate  

作　　者：Chun-bo Zhang De-ning Di Xiao-wei Chen Ken Wen 

机构地区：[1]State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing,100081,China [2]Institute of Systems Engineering,China Academy of Engineering Physics,Mianyang,Sichuan,621999,China [3]Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology,Beijing,100081,China

出　　处：《Defence Technology（防务技术）》2020年第2期299-307,共9页Defence Technology

基　　金：supported by the Natural Science Foundations of China(11872118,11627901)。

摘　　要：In this paper,the gauge points setting is introduced in the SPH simulation to analyze the debris cloud structure generated by the hypervelocity impact of disk projectile on thin plate.Compared with the experiments,more detailed information of the debris cloud structure can be classified from the numerical simulation.However,due to the solitary dispersion and overlap display of the particles in the SPH simulation,accurate comparison between numerical and experimental results is difficult to be performed.To track the velocity and spatial distribution of the particles in the debris cloud induced from disk and plate,gauge points are locally set in the single-layer profile in the SPH model.By analyzing the gauge points’spatial coordinate and velocity,the location and velocity of characteristic points in the debris cloud are determined.The boundary of debris cloud is achieved,as well as the fragments distribution outside the main structure of debris cloud.

关 键 词：HYPERVELOCITY impact DEBRIS cloud SPH method Particle GAUGE points Motion CHARACTERISTICS 

分 类 号：TJ06[兵器科学与技术—兵器发射理论与技术]