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dc.contributor.authorLiu, Huen_US
dc.contributor.authorChng, Caleb Zheng Xianen_US
dc.contributor.authorWang, Guanjianen_US
dc.contributor.authorNg, Bing Fengen_US
dc.identifier.citationLiu, 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-.
dc.description.abstractTaking 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.en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relation.ispartofInternational Journal of Mechanical Sciencesen_US
dc.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.en_US
dc.subjectEngineering::Mechanical engineeringen_US
dc.titleCrashworthiness improvements of multi-cell thin-walled tubes through lattice structure enhancementsen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.contributor.researchSingapore Centre for 3D Printingen_US
dc.description.versionAccepted versionen_US
dc.subject.keywordsDynamic Responseen_US
dc.subject.keywordsMutli-Cell Tubeen_US
dc.description.acknowledgementThe authors would like to thank the Singapore Centre for 3D Printing, which is supported by the National Research Foundation, Prime Minister’s Office, Singapore under its Medium-Sized Centre funding scheme, as well as the internal funding by Nanyang Technological University 04INS000329C160 and 04INS000453C160.en_US
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