弹击载荷下陶瓷⁃UHMWPE复合结构厚度比对背面变形的影响分析  

Analysis of the Effect of Thickness Ratio on the Back⁃face Deformation of Ceramic⁃UHMWPE Composite Structures under High⁃speed Impact

作　　者：张逸之 杨尚霖 柳占立[1] ZHANG Yi-zhi;YANG Shang-lin;LIU Zhan-li(School of Aerospace Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学航天航空学院,北京100084

出　　处：《含能材料》2024年第9期964-971,共8页Chinese Journal of Energetic Materials

基　　金：国家重点研发计划项目(2022YFC3320502)。

摘　　要：陶瓷⁃超高分子量聚乙烯(UHMWPE)复合结构具有优异的防弹性能,但是其在弹击载荷下的背面变形规律仍不清晰。研究建立定量描述弹击载荷下陶瓷⁃UHMWPE复合结构背面变形的理论模型,分析了相同面密度下陶瓷与UHMWPE层厚度比对背面变形的影响机制。结果表明,相同弹击速度和面密度条件下,厚度比值越大,单位厚度的UHMWPE层储存的能量越大,导致背面变形越大。The ceramic⁃UHMWPE composite structure has excellent ballistic performance,but its back⁃face deformation law un⁃der high⁃speed impact is still unclear.In this paper,a theoretical model is established to quantitatively describe the back⁃face de⁃formation of ceramic⁃UHMWPE structures under high⁃speed impact,and the influence mechanism of the thickness ratio on the back⁃face deformation under the same areal density is analyzed.The results show that the larger the thickness ratio of ceramic to UHMWPE layer under the same impact velocity and areal density,the larger the energy stored in the UHMWPE layer per unit thickness,leading to the larger back⁃face deformation.

关 键 词：陶瓷复合结构 防弹性能 轻量化设计 理论分析 厚度参数 

分 类 号：TJ5[兵器科学与技术—军事化学与烟火技术] TJ02[理学—固体力学] O34[理学—力学]