钨合金杆在线型聚能射流作用下变形断裂的机制及其特性  

Deformation and Fracture Mechanisms and Characteristics of Long Tungsten Alloy Rod under the Impact of Linear Shaped Jet

作　　者：刘岩[1] 龙仁荣[1] 张庆明[1] 郭香华[1] 刘瀚 陈利[1] LIU Yan;LONG Renrong;ZHANG Qingming;GUO Xianghua;LIU Han;CHEN Li(State Key Laboratory of Explosion Science and technology,Beijing Institute of Technology,Beijing 100081,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

出　　处：《兵工学报》2020年第S02期135-143,共9页Acta Armamentarii

基　　金：爆炸科学与技术国家重点实验室基金项目(QNKT19-09)。

摘　　要：为研究钨合金杆在线型聚能射流作用下变形断裂的机制及其特性,通过静态实验研究自由状态下钨合金杆在线型聚能射流作用下的变形断裂特征。在验证模型的基础上利用ANSYS/LS-DYNA软件模拟线型聚能射流对静态钨合金杆和以不同角度对运动钨合金杆的作用过程,分析其断裂特征及断裂机理。结果表明:在线型聚能射流冲击下,静态和运动钨合金杆均断裂成几截,钨合金杆的断裂不是由于射流的侵彻作用,断裂的主要机制是钨合金杆在线型射流的冲击作用下变形引起的拉伸和剪切失效引起的断裂;断裂位置和断裂截数与线型聚能射流和运动钨合金杆之间的夹角有关。研究结果可为拦截长杆弹的新型反应装甲设计提供数据参考。In order to study the deformation and fracture mechanisms and characteristics of tungsten alloy rod under the impact of linear shaped jet,the deformation and fracture characteristics of tungsten alloy rod under the impact of linear shaped jet are studied by static experiments.Based on the verification of the model,the interaction processes of the linear shaped jet on the static and the moving tungsten alloy rods at different angles are simulated by ANSYS/LS-DYNA,and their fracture characteristics and mechanism are analyzed.The results show that both the static and moving tungsten rods are broken into several sections under the impact of the linear shaped jet.The fracture of tungsten alloy rod is not due to the penetration of jet.The main mechanism of fracture is the tensile/shear failure caused by the deformation of tungsten alloy rod under the impact of the linear shaped jet.The position and section number of the fracture are related to the angle between them.The research results can provide data support for the design of a new type of reactive armor to intercept long rod projectiles.

关 键 词：钨合金杆 线型聚能射流 数值模拟 变形断裂 

分 类 号：TJ012.4[兵器科学与技术—兵器发射理论与技术]