论文摘要
With the development of two-stage munitions（a precursor shaped charge（SC）and a following kinetic energy projectile）to attack the hard concrete targets,as well as the increasing applications of ultra-high performance concrete（UHPC）in both civil and military protective structures,a comparative study on the impact performance of SC formed jet on UHPC target is performed experimentally and numerically at present.Firstly,a series of jet penetration/perforation test on the UHPC,45# steel and UHPC/45# steel composite targets are conducted.By assessing the penetration depth and borehole（crater and tunnel）diameter,the influences of target material and configuration as well as the standoff distance of SC on the impact performance of jet are experimentally discussed.Then,by adopting the 2 D multi-material Arbitrary Lagrange-Euler（ALE）algorithm,Fluid-Structure Interaction（FSI）method and erosion algorithm implemented in the finite element code LS-DYNA,the formation and impact performance of jet in the present test are well reproduced.Finally,based on the validated numerical algorithms,constitutive models and the corresponding parameters,the influences of target material（UHPC,NSC and 45# steel）,standoff distance,target configuration（stacked and spaced）and weight efficiency on the impact performance of jet are further discussed.The derived conclusions could provide helpful references for evaluating the ballistic performance of jet and designing the protective structures.
论文目录
文章来源
类型: 期刊论文
作者: Hao Wu,Feng Hu,Qin Fang
来源: Defence Technology 2019年04期
年度: 2019
分类: 工程科技Ⅱ辑,工程科技Ⅰ辑
专业: 无机化工,武器工业与军事技术,建筑科学与工程
单位: Research Institute of Structural Engineering and Disaster Reduction, College of Civil Engineering, Tongji University,Key Laboratory of Performance Evolution and Control for Engineering Structures of Ministry of Education,Tongji Universiry,Army Engineering University of PLA
基金: supported by the National Natural Science Foundation of China (51438003,51878507)
分类号: TU528;TJ410
页码: 506-518
总页数: 13
文件大小: 2765K
下载量: 14