Theoretical investigation on the energy absorption of ellipse-shaped self-locked tubes

Yang, KuiJian, Qiao, Chuan, Xiong, Feng, Zhang, Lei, Wu, Zhangming ORCID: https://orcid.org/0000-0001-7100-3282 and Chen, Yuli 2020. Theoretical investigation on the energy absorption of ellipse-shaped self-locked tubes. SCIENCE CHINA Physics, Mechanics and Astronomy 63 (9) , 294611. 10.1007/s11433-019-1518-9

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Abstract

Self-locked energy-absorbing systems have been proposed in previous studies to overcome the limitations associated with the round-tube systems because they can prevent the lateral splash of tubes from impact loadings without any constraints. In case of self-locked systems, the ellipse-shaped self-locked tube is considered to be an optimal design when compared with the ordinary circle-shaped self-locked tubes and other shaped self-locked tubes. In this study, we aim to theoretically analyze the ellipseshaped self-locked tubes. Further, a plastic hinge model is developed to predict the force-displacement relation of the tube, which is compared with the deformation process observed in the experiment and finite element method (FEM) simulation. Using this model, the effects of tuning the geometric parameters of the tube on the energy absorption performance, including the deformation efficiency, energy absorption capacity, and effective stroke ratio, are simulated and analyzed. Finally, a guideline is provided with respect to the design of the ellipse-shaped self-locked tube in engineering applications.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Publisher:	Springer Verlag (Germany)
ISSN:	1674-7348
Date of First Compliant Deposit:	21 August 2020
Date of Acceptance:	3 February 2020
Last Modified:	06 May 2023 07:17
URI:	https://orca.cardiff.ac.uk/id/eprint/134307

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