海军工程大学学报JOURNAL OF NAVAL UNIVERSITY OF ENGINEERING 第32卷第5期
2020年10月Vol32 No5Oct 2020DOI :10.7495/j.issn.1009-3486.2020.05.003
碳海绵
张元豪12,程忠庆2,侯海量】,刘靖晗12,李凌峰12
(1.海军工程大学舰船与海洋学院,武汉430033; 2.海军勤务学院海防工程系,天津300450)摘要:为了研究钛合金板在中低速破片模拟弹(FSP )侵彻下的抗弹性能及破坏机理,开展了一系列弹道试 验,对比分析了 921A 钢和钛合金的抗弹性能,得到了钛合金靶板的破坏模式,并且利用有限元分析软件 Ansys/LS-DYNA 探讨了不同厚度下钛合金靶板的能量吸收规律。研究结果表明:FSP 侵彻下,钛合金靶板背 弹面产生脆性断裂并在撞击区域形成裂纹,靶板贯穿后,背弹面扩孔呈现碎块崩落现象;FSP 中低速侵彻下,钛 合金靶板单位面密度吸能较921A 钢靶板大;靶厚较小时,随着FSP 初速的增加,靶板破坏模式存在高耗能到 低耗能的转变,此刻靶板单位面密度吸能达到峰值;靶板能量吸收率随弹体冲击能的增大,先急剧减小后缓慢 减小,在一定的弹体冲击能下,靶板能量吸收率随靶板厚度的增大而增大… 关键词:FSP 冲击;钛合金;抗弹性能;破坏模式;能量吸收率
滤扇中图分类号:O344.7 文献标志码:A 文章编号:1009一3486(2020)05一0011一05
Ballistic performance of titanium alloy target
设备防护箱subjected to impact by FSP
ZHANG Yuan-hao 1,, CHENG Zhong-qing 2 , HOU Hai-liang 1 , LIU Jing-han 1,, LI Ling-feng 1,
(1.College of Naval Architecture & Ocean Engineering , Naval Univ . of Engineering ,
虚拟电子围栏
洗手粉Wuhan430033,China ; 2Dept ofCoastalDefenseEngineering ,
Naval College of Service , Tianjin 300450, China )排队长度
Abstract : In order to investigate the anti-penetration performance and failure modes of titanium alloy target under low-medium velocity FSP impact , a series of ballistic experiments was carried out, the ba l istic performance of titanium a l oy and 921A steel was compared and analyzed , the failure modes oftitaniuma l oywereobtained ,andtheenergyabsorptionlawoftitaniuma l oytargetwithdi f erent thickness was investigated by usin
g finite element analysis software Ansys/LS-DYNA. The results are as follows : Under FSP penetration , brittle fracture occurs on the rear plane and cracks are formed in theimpactarea ; andaftertargetpenetrates ,theholeenlargementontherearplanepresentsdebris collapse phenomenon . Under medium and low velocity FSP penetration , the energy absorption per unit surfacedensityoftitaniuma l oytargetislargerthanthatof921Asteeltarget Whenthetargetthick- nessissma l ,withtheincreaseoftheinitialvelocityofFSP ,thedamagemodeofthetargetchanges from high energy consumption to low energy consumption ,and at this moment ,theenergyabsorp- tionperunitsurfacedensityofthetargetreachesitspeakvalue Withtheincreaseoftheimpactener- gy ,theenergyabsorptionrateofthetargetdecreasessharplyatfirstandthenslowly Underacertain mpactenergy ,theenergyabsorptionrateofthetargetincreaseswiththeincreaseofthethicknessof thetarget
收稿日期=2019-03-25;修回日期:2019-06-24。
基金项目:国家自然科学基金资助项目(51679246)国家安全重大基础研究项目(6133050102)。作者简介:张元豪(1992 — )男,博士生,主要研究方向为海防维护。
通信作者:侯海量(1977 — )男,副教授,博士,******************。