预应力陶瓷组合结构的抗侵彻性能研究

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摘要为了满足陶瓷防护结构的轻量化、高韧性的要求，需要采用新型复合结构来提高其在抗侵彻过程中的能量耗散效率。本文设计了一种预应力型陶瓷组合结构，即应用弹簧施加预应力，将陶瓷、金属边框组合成防护基元，组合防护基元形成预应力陶瓷组合结构。由于进行相关实验比较困难，本文使用ABAQUS软件进行建模和数值模拟分析。基于量纲分析方法设计了五种速度、五种预应力下组合结构的侵彻数值计算方案，研究预应力对于该组合结构抗侵彻性能的影响规律。结果表明：随着预应力的增加，子弹的残余速度逐渐减小，新型防护结构的抗侵彻性能逐渐提升；并分析了惯性效应、强度效应、变形特性以及预应力相关的无量纲参量的影响规律，提出了该结构在高速冲击下残余速度的表达式。本研究中预应力的引入对新型陶瓷防护结构抗侵彻性能的设计具有较好的参考意义。

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	马昊1
	陈美多1
	苗春贺1
	王鹏飞1
	徐松林1
	2

关键词 ：冲击动力学, 侵彻, 预应力, 陶瓷组合结构, 数值模拟

Abstract：In order to meet the requirements of lightweight and high toughness of ceramic protective structures, it is necessary to adopt new composite structures to improve the energy dissipation efficiency in the process of anti-penetration. In this paper, a pre-stressed ceramic composite structure is designed, that is, the pre-stress is applied by spring, and the ceramic and metal frame are combined into protective elements, and the protective elements are combined to form the pre-stressed ceramic composite structure. Since it is difficult to carry out relevant experiments, this paper uses ABAQUS software for modeling and numerical simulation analysis. Based on the dimensional analysis method, the numerical calculation scheme of penetration of the composite structure under five kinds of velocity and five kinds of pre-stress is designed, and the influence law of pre-stress on the penetration resistance of the composite structure is studied. The results show that with the increase of pre-stress, the residual velocity of the bullet decreases gradually, and the penetration resistance of the new protective structure increases gradually. The influence law of inertia effect, strength effect, deformation characteristics and dimensionless parameters related to pre-stress are analyzed, and the expression of residual velocity of the structure under high-speed impact is proposed. The introduction of pre-stress in this study has a good reference significance for the design of penetration resistance of new ceramic protective structures.

Key words： dynamics of impact penetration pre-stress ceramic composite construction numerical simulation

收稿日期: 2022-10-09 出版日期: 2023-11-15

引用本文:

马昊1, 陈美多1, 苗春贺1, 王鹏飞1, 徐松林1,2. 预应力陶瓷组合结构的抗侵彻性能研究[J]. 振动与冲击, 2023, 42(21): 160-168.
MA Hao1, CHEN Meiduo1, MIAO Chunhe1, WANG Pengfei1, XU Songlin1,2. Anti-penetration performance of pre-stressed ceramic composite construction. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(21): 160-168.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I21/160

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