Abstract
In this study, a type of tube with an open-hole AL alloy tube nested outside the CFRP tube is designed and fabricated, and the energy absorbing characteristics and failure mechanism under quasi-static axial compression are discussed. It is found that the summing tube composed of two single tubes has less energy absorption than the hybrid tube. Numerical simulation and theoretical models are used to evaluate the influence of the hybrid tube in terms of cost and weight, and it is found that under the same energy absorption, the hybrid tube has a weight reduction of 39.2% compared to the open-hole AL tube, which was 25.7% of the cost of the CFRP tube. This hybrid structure has potential as the load-carrying and energy absorption tube.
Highlights
Thin-walled tubes have been found to have wide applications as crashworthy structures in the engineering field for their high structural efficiency and low usage cost (Lu and Yu, 2003; Du and Song, 2004; Zhang, 2008)
Through the bottom view and the load–displacement curve, the lower hole of the AL tube started to undergo deformation for energy absorption; the inside of the CFRP tube deforms from the lower part, and both the deformations result in a decrease in peak load
The results show that the restraint between the AL tube and the CFRP tube is beneficial to energy absorption
Summary
Thin-walled tubes have been found to have wide applications as crashworthy structures in the engineering field for their high structural efficiency and low usage cost (Lu and Yu, 2003; Du and Song, 2004; Zhang, 2008). It is found that hybrid tubes showed relatively better load-carrying and energy absorption characteristics than single tubes. The influence of open-hole and hybrid configuration on the load-carrying and energy absorption of tubes under axial compression will be explored. A universal testing machine (UTM5305STXL) with a load capacity of 300 kN is used to investigate the quasi-static axial compression properties of various tubes, namely, AL, open-hole AL, CFRP, and hybrid. These tubes are placed between the rigid steel plate with a diameter of 150 mm. Experiments are carried out to investigate the energy-absorbing characteristics and failure mechanism of three types of tubes, namely, open-hole AL, CFRP, and hybrid.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
