Experimental Research on Quasi-Static Compression Response of Multi-Cellular Structures with Carbon Fiber Reinforced Epoxy Composite Hexagonal Tubes

被引：0
|
作者：
Zhang Z.-D. [1 ]
Ren J. [1 ]
Ma D.-W. [1 ]
Gao Y. [2 ]
Zhu Z.-L. [1 ]
Wang X. [3 ]
机构：
[1] School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing
[2] Rocket Army Academy, Beijing
[3] Beijing Institute of Space Launching Technology, Beijing
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2023年 / 44卷 / 08期
关键词：
Analysis of contribution rate; CFRP hexagonal tube; Energy absorption characteristics; Failure mode; Multi-cell structure; Quasi-static compression test;
D O I：
10.13675/j.cnki.tjjs.2203006
中图分类号：
学科分类号：
摘要：
In order to simplify the manufacturing process，carbon fiber reinforced epoxy resin composite （CFRP）hexagonal tubes were bonded together with epoxy resin adhesive to form multicellular structures with CFRP hexagonal tubes（MSCHT）. Quasi static compression tests were carried out to analyze compression failure mode and energy dissipation characteristics of MSCHT，then contribution rate of each influencing factors to the compression response are obtained. The results show that：the MSCHT in this paper presents progressive compression failure，and the ribbon fiber bundles are formed along the free surface of hexagonal tubes. Due to the interaction between adjacent carbon tubes and the existence of bonding surface，the actual average load of MSCHT is higher than the comparative measuring value and causes the actual energy absorption（EA）higher than the comparative measuring energy absorption. Therefore，compared with a single CFRP tube，the specific energy absorption（SEA）of MSCHT is higher and existing an optimum wall thickness caused the maximum SEA. The maximum SEA of the test specimen is 114.4kJ/kg. The linear contribution rate of cell number and tube thickness to average compressive load，peak load and EA is positive，and the cell number contribution rate of MSCHT is higher than tube thickness，while the linear contribution rate of tube thickness to EA is negative and the contribution rate of cell number is positive. © 2023 Journal of Propulsion Technology. All rights reserved.
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