Please use this identifier to cite or link to this item:
Title: Crashworthiness improvements of multi-cell thin-walled tubes through lattice structure enhancements
Authors: Liu, Hu
Chng, Caleb Zheng Xian
Wang, Guanjian
Ng, Bing Feng
Keywords: Engineering::Mechanical engineering
Issue Date: 2021
Source: Liu, H., Chng, C. Z. X., Wang, G. & Ng, B. F. (2021). Crashworthiness improvements of multi-cell thin-walled tubes through lattice structure enhancements. International Journal of Mechanical Sciences, 210, 106731-.
Project: 04INS000329C160 
Journal: International Journal of Mechanical Sciences 
Abstract: Taking advantage of multi-cell tubes and lattice structures on improving crashworthiness performances, a novel multi-cell thin-walled tube filled with uniform and graded lattice structures is explored in this paper. The body-centered cubic lattice structure is employed as the uniform lattice filler, while the graded lattice filler is constructed by varying the diameter of lattice rods in each layer. Several geometric parameters are investigated numerically, which include the cell number of tube, the dimension of tube and lattice, the height-to-width ratio of the enhanced tube, and the configuration of graded lattices. These parameters are then compared for their crushing load-displacement curves, deformation modes, and energy-absorbing mechanisms. It is observed that the multi-cell tubes exhibit significant improvements to the absorbed energy and crushing force efficiency over the single-cell tubes. In addition, the specific energy absorption (SEA) of the hybrid multi-cell tube structures is improved by 78.6% with respect to the sum of its individual constituents. Furthermore, the multi-cell tube structure filled with graded lattices can present larger energy-absorbing capacity than its uniform lattice counterpart, and the strong end at its top provides better SEA performance. Overall, the hybrid lattice-enhanced tube structure provides an optimal strategy for the crashworthiness design of multi-cell tubes, which can serve as a potential candidate for future crashworthiness applications.
ISSN: 0020-7403
DOI: 10.1016/j.ijmecsci.2021.106731
Rights: © 2021 Elsevier Ltd. All rights reserved. This paper was published in International Journal of Mechanical Sciences and is made available with permission of Elsevier Ltd.
Fulltext Permission: embargo_20231116
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles
SC3DP Journal Articles

Files in This Item:
File Description SizeFormat 
3. Crashworthiness improvements of multi-cell thin-walled tubes through lattice structure enhancements.pdf
  Until 2023-11-16
6.43 MBAdobe PDFUnder embargo until Nov 16, 2023

Citations 20

Updated on Feb 17, 2022

Citations 20

Updated on Feb 18, 2022

Page view(s)

Updated on Jul 3, 2022

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.