Crushing behavior of biomimetic hierarchical multi-cell thin-walled tubes under multi-angle loading

IF 5.6 1区 工程技术 Q1 ENGINEERING, CIVIL Engineering Structures Pub Date : 2025-03-04 DOI:10.1016/j.engstruct.2025.119996
Chao Gong , Chenxi Meng , Qi Chong , Lei Chen , Yage Guo
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Abstract

This paper proposes a set of biomimetic hierarchical multi-cell thin-walled structures (BHM). The internal structure of the proposed BHM tubes is constructed based on the micro-structure of bamboo and traditional multi-cell thin-walled structures (TMT). The crashworthiness performance of the proposed structures with different cross-sectional configurations under multi-angle loads was numerically studied. The anti-collision performance of BHM and TMT under multi-angle crushing loads was comparatively studied through finite element simulation. In addition, the TOPSIS method was used to select the optimal cross-sectional configuration of the biomimetic thin-walled tube. The results show that compared with TMT, BHM exhibits excellent crashworthiness under small-angle collisions, and this advantage begins to decline as the collision angle increases. Among different types of BHM, the hexagonal BHM and the balanced configuration of BHM can effectively improve the energy absorption capacity and load stability of the structure, and quadrilateral BHM provides a reference for reducing the peak crushing force. The optimal cross-sectional configuration obtained by the TOPSIS method is the hexagonal bio-hierarchical multi-walled tube with a balanced configuration. Finally, a comparative analysis with other hierarchical multi-cell tubes reported in the literature confirms that the crashworthiness performance of BHM exceeds existing designs. Theoretical derivation of the mean crushing force was conducted for the proposed tubes, and the theoretical predictions of MCF are in good agreement with the numerical results. The results of this study provide effective guidance for using the biomimetic method with a bamboo-like micro cross-sectional morphology to design multi-cell energy absorbers with high energy absorption efficiency.
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来源期刊
Engineering Structures
Engineering Structures 工程技术-工程:土木
CiteScore
10.20
自引率
14.50%
发文量
1385
审稿时长
67 days
期刊介绍: Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed. The scope of Engineering Structures encompasses, but is not restricted to, the following areas: infrastructure engineering; earthquake engineering; structure-fluid-soil interaction; wind engineering; fire engineering; blast engineering; structural reliability/stability; life assessment/integrity; structural health monitoring; multi-hazard engineering; structural dynamics; optimization; expert systems; experimental modelling; performance-based design; multiscale analysis; value engineering. Topics of interest include: tall buildings; innovative structures; environmentally responsive structures; bridges; stadiums; commercial and public buildings; transmission towers; television and telecommunication masts; foldable structures; cooling towers; plates and shells; suspension structures; protective structures; smart structures; nuclear reactors; dams; pressure vessels; pipelines; tunnels. Engineering Structures also publishes review articles, short communications and discussions, book reviews, and a diary on international events related to any aspect of structural engineering.
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