Low Velocity Impact and Compression-After-Impact Response of Z-Pin Reinforced Core Sandwich Composites
Low Velocity Impact and Compression-After-Impact Response of Z-Pin Reinforced Core Sandwich Composites
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DOI：
10.1115/1.1289141
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发表时间：
2000-10
影响因子：
1.2
通讯作者：
U. Vaidya;A. Palazotto;L. Gummadi
中科院分区：
文献类型：
--
作者：
U. Vaidya;A. Palazotto;L. Gummadi
在目前的工作中，夹层复合材料结构的创新结构被称为Z销，或桁架芯销，进行了研究。Z-pin夹芯结构提供了增强的横向刚度、高抗损伤性和多功能优势。本文对Z-pin夹层板的低速冲击特性进行了分析，并对冲击后的压缩特性进行了实验研究。Vaidya等人已经报道了分析中考虑的Z销夹层板LVI的实验研究，1999，中空和泡沫填充Z-Pin增强芯层的层合夹层复合材料的低速冲击响应，复合材料技术与研究杂志，JCTRER，21，第2期，4月，pp. 84-97，其中样品经受11、20、28、33和40 J的冲击能量。LVI分析是将Z销屈曲作为主要失效模式（并基于实验观察）进行的。已经开发了一个有限元模型，考虑屈曲的销，并使用ABAQUS进行分析。本文还介绍了冲击后压缩（CAI）的研究，这是进行了与Z-pin增强芯层泡沫和无泡沫的夹层复合材料的实验结果。实验性LVI测试是在Vaidya等人，1999，中空和泡沫填充Z-Pin增强芯层的层合夹层复合材料的低速冲击响应，复合材料技术与研究杂志，JCTRER，21，第2期，4月，pp. 84-97.结果表明，选择性地使用Z-pin芯是一个可行的想法，利用芯内的空间，夹层复合材料在结构中的应用。
In the current work, sandwich composite structures with innovative constructions referred to as Z-pins, or truss core pins, are investigated. The Z-pin core sandwich construction offers enhanced transverse stiffness, high damage resistance, and multi-functional benefits. The present study deals with analysis of low-velocity impact (LVI) of Z-pin sandwich plate, and experimental studies of compression-after-impact characterization. Experimental studies on LVI of Z-pin sandwich plate considered in the analysis have been reported in Vaidya, et al., 1999, Low Velocity Impact Response of Laminated Sandwich Composites with Hollow and Foam-Filled Z-Pin Reinforced Core, Journal of Composites Technology and Research, JCTRER, 21, No. 2, Apr., pp. 84-97, where the samples were subjected to 11, 20, 28, 33, and 40 J of impact energy. The LVI analysis is developed with regards to Z-pin buckling as a primary failure mode (and based on experimental observations). A finite element model accounting for buckling of the pins has been developed and analyzed using ABAQUS. This paper also presents experimental results on compression-after-impact (CAI) studies which were performed on the sandwich composites with Z-pin reinforced core with and without foam. The experimental LVI tests were performed in Vaidya, et al., 1999, Low Velocity Impact Response of Laminated Sandwich Composites with Hollow and Foam-Filled Z-Pin Reinforced Core, Journal of Composites Technology and Research, JCTRER, 21, No. 2, Apr., pp. 84-97. The results indicate that selective use of Z-pin core is a viable idea in utilizing space within the core for sandwich composites in structural applications.