期刊
COMPOSITES PART B-ENGINEERING
卷 98, 期 -, 页码 406-414出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2016.05.048
关键词
CFRP; Filled tube; Aluminum honeycomb; Crashworthiness
资金
- National Natural Science Foundation of China [51205422]
- Outstanding Young Scholars of Guangdong Province
- Pearl River S&T Nova Program of Guangzhou [2014J2200005]
- Natural Science Foundation of Guangdong Province [2015A030313016]
- Natural Science Foundation of Hunan Province [S2016J504B0931]
- China Postdoctoral Science Foundation [2015M582323]
This paper aims to explore the failure mechanism and crashworthiness characteristics of carbon fiber reinforced plastic (CFRP) square tubes filled with aluminum honeycomb subjected to quasi-static axial crushing. The crushing characteristics between the honeycomb-filled CFRP tubes and the bare CFRP tubes were compared. The influence of the cell width of aluminum honeycomb on the failure mechanism and crashworthiness characteristics of the filled CFRP tubes was further analyzed. Three distinct failure modes, classified as stable progressive end-crushing (I), unstable local buckling (II) and collapse in the mid-length (III), were observed during the crushing tests. By comparison, the peak load and absorbed energy of the filled tubes increased by more than 10% as compared to those of the bare CFRP tubes, ranging approximately from 12.41% to 27.22% and from 10.49% to 21.83% respectively. It has been shown that the cell width was a critical parameter affecting crashworthiness characteristics. Moreover, with the decrease in the cell width, the peak load and absorbed energy increased whilst the specific energy absorption (SEA) decreased. (C) 2016 Elsevier Ltd. All rights reserved.
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