Ballistic performances of the hourglass lattice sandwich structures under high-velocity fragments  

作　　者：He-xiang Wu Jia Qu Lin-zhi Wu 

机构地区：[1]Key Laboratory of Advanced Ship Materials and Mechanics,College of Aerospace and Civil Engineering,Harbin Engineering University,Harbin,150001,China [2]School of Civil Engineering,Northeast Forestry University,Harbin,150040,China

出　　处：《Defence Technology（防务技术）》2024年第1期312-325,共14页Defence Technology

基　　金：supported by the Defense Industrial Technology Development Program(Grant No.JCKY2018604B004);the National Natural Science Foundation of China(Grant No.11972007)。

摘　　要：In this paper,the numerical simulation method is used to study the ballistic performances of hourglass lattice sandwich structures with the same mass under the vertical incidence of fragments.Attention is paid to elucidating the influences of rod cross-section dimensions,structure height,structure layer,and rod inclination angle on the deformation mode,ballistic performances,and ability to change the ballistic direction of fragments.The results show that the ballistic performances of hourglass lattice sandwich structures are mainly affected by their structural parameters.In this respect,structural parameters optimization of the hourglass lattice sandwich structures enable one to effectively improve their ballistic limit velocity and,consequently,ballistic performances.

关 键 词：Hourglass lattice sandwich structures Ballistic performances high-velocity Finite element analysis 

分 类 号：TJ012[兵器科学与技术—兵器发射理论与技术] TJ04