A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Energy absorption of axially compressed thin-walled square tubes with patterns
AbstractThe paper suggests the introduction of patterns to the surface of conventional thin-walled square tubes to improve the energy absorption capacity under axial compressive loads. A quasi-static axial crushing analysis has been conducted numerically by the nonlinear explicit finite element code LS-DYNA. Two types of patterns constructed using the basic pyramid elements were introduced. Type A pattern was aimed at triggering the extensional mode for relatively thin square tubes whereas type B pattern was intended to develop new collapse mode capable of absorbing more energy during collapse. A total of 30 tubes with a length of 120mm, thickness 1.2mm and widths of 40 or 60mm were simulated. Numerical results showed that all tubes with type A patterns developed the extensional collapse mode instead of the symmetric collapse mode and absorbed about 15–32.5% more energy than conventional thin-walled square tubes with a mass increase less than 5%. Meanwhile, a new collapse mode named octagonal collapse mode was observed for tubes with type B pattern and the energy absorption of tubes developing this mode increased by 54–93% compared with the conventional tube. The influence of various configurations of the patterns on the deformation and energy absorption of the tubes was also discussed. The paper opens up a new avenue in design of high energy absorption components.
Energy absorption of axially compressed thin-walled square tubes with patterns
AbstractThe paper suggests the introduction of patterns to the surface of conventional thin-walled square tubes to improve the energy absorption capacity under axial compressive loads. A quasi-static axial crushing analysis has been conducted numerically by the nonlinear explicit finite element code LS-DYNA. Two types of patterns constructed using the basic pyramid elements were introduced. Type A pattern was aimed at triggering the extensional mode for relatively thin square tubes whereas type B pattern was intended to develop new collapse mode capable of absorbing more energy during collapse. A total of 30 tubes with a length of 120mm, thickness 1.2mm and widths of 40 or 60mm were simulated. Numerical results showed that all tubes with type A patterns developed the extensional collapse mode instead of the symmetric collapse mode and absorbed about 15–32.5% more energy than conventional thin-walled square tubes with a mass increase less than 5%. Meanwhile, a new collapse mode named octagonal collapse mode was observed for tubes with type B pattern and the energy absorption of tubes developing this mode increased by 54–93% compared with the conventional tube. The influence of various configurations of the patterns on the deformation and energy absorption of the tubes was also discussed. The paper opens up a new avenue in design of high energy absorption components.
Energy absorption of axially compressed thin-walled square tubes with patterns
Zhang, Xiong (author) / Cheng, Gengdong (author) / You, Zhong (author) / Zhang, Hui (author)
Thin-Walled Structures ; 45 ; 737-746
2007-06-24
10 pages
Article (Journal)
Electronic Resource
English
Energy absorption of axially compressed thin-walled square tubes with patterns
| Online Contents | 2007
Energy absorption in axially loaded square thin-walled aluminium extrusions
| British Library Conference Proceedings | 1994
Effect of triggering on the energy absorption capacity of axially compressed aluminum tubes
| British Library Online Contents | 1999
Energy absorption of axially crushed expanded metal tubes
| Elsevier | 2013