ZHANG Ming, YUAN Mei-ni, XIANG Feng-hua, WANG Zhen-xing
(College of Mechatronic Engineering, North University of China, Taiyuan 030051, China)
Abstract： The penetration resistance of Kevlar-129 fiber reinforced composite materials was investigated with AUTODYN software. The ballistic limits of the fragment that pierced 6 kinds of target plates were obtained by finite element simulation when the 10 g fragment simulation projectile (FSP) impacting to the target plates of different thickness values of 8,10,12, 14, 16 and 18 mm with appropriate velocity, respectively, and the influences of thickness on the ballistic limits and the specific energy absorption were analyzed. The results show that the ballistic limit of Kevlar-129 fiber reinforced composite plates presents linear growth with the increase of the target thickness in the range from 8 to 18 mm. The specific energy absorption of plates presents approximately linear growth, but there is slightly slow growth in the range from 10 to 16 mm of the target thickness. It also can be found that the influences of plate thickness and surface density on the varying pattern of specific energy absorption are almost the same. Therefore, both of them can be used to characterize the variation of specific energy absorption under the impact of the FSP fragment.
Key words： ballistic limit; finite element; specific energy absorption; Kevlar fiber reinforced composite material
CLD number： TB333； TJ012.4 Document code： A
Article ID： 1674-8042（2015）03-0286-05 doi： 10.3969/j.issn.1674-8042.2015.03.015
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纤维复合材料的弹道侵彻数值仿真
张明， 原梅妮， 向丰华， 王振兴
（中北大学 机电工程学院， 山西 太原 030051）
摘要:基于AUTODYN有限元软件， 研究了Kevlar-129纤维增强复合材料的抗侵彻性能。 通过质量为10 g的FSP破片对厚度为8、10、12、14、16以及18 mm的六组Kevlar纤维靶板进行撞击模拟， 获得了FSP破片贯穿6组靶板的弹道极限， 并分析了靶板的弹道极限、比吸收能随板厚的变化关系。 结果表明， 在板厚8-18 mm范围内， Kevlar纤维靶板的弹道极限随板厚的增加呈线性增长；在此范围内， 靶板的比吸收能也呈近似线性增长， 但在板厚为10-16 mm时， 增长稍缓。 对比还发现， 比吸收能随板厚的变化规律与靶板面密度的变化规律几乎相同， 二者都可用于描述Kevlar-129纤维复合材料靶板在FSP破片碰撞下比吸收能的变化。
关键词:弹道极限； 有限元； 比吸收能； Kevlar-129纤维增强复合材料
引用格式：ZHANG Ming, YUAN Mei-ni, XIANG Feng-hua, et al. Ballistic impact simulation of Kevlar-129 fiber reinforced composite material. Journal of Measurement Science and Instrumentation, 2015, 6(3)： 286-290. ［doi： 10.3969／j.issn.1674-8042.2015.03.015］
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