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J. Zhang^1,2,3, S. Xie^1,2,3, Z. Liu^1,2,3 and S. Zheng^1,2,3

¹Key Laboratory of Traffic Safety on Track Central South University, Ministry of Education, Changsha, Hunan, China
²Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Changsha, Hunan, China
³National & Local Joint Engineering Research Centre of Safety Technology for Rail Vehicle, Changsha, Hunan, China

doi:10.4203/ccc.1.34.5

J. Zhang, S. Xie, Z. Liu, S. Zheng, "Study on crashworthiness of concave polygonal tubes evolved from two approaches", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 34.5, 2022, doi:10.4203/ccc.1.34.5

Keywords: crashworthiness, concave tubes, theoretical analysis.

Abstract

Aiming at the limited energy absorption (EA) of traditional thin-walled structures, the crashworthiness of concave polygonal tubes evolved from convex polygonal tubes is studied. Based on the first evolution proposed by most scholars, another evolution is put forward. The results show that under the same mass, the EA characteristic of the polygonal tubes with concave angle is improved obviously, and the EA characteristic of approach ? is more outstanding. In addition, the theoretical analysis of the mean crushing force of concave tubes is deduced by using the simplified super folding element theory.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 1 PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 34.5 Study on crashworthiness of concave polygonal tubes evolved from two approaches J. Zhang^1,2,3, S. Xie^1,2,3, Z. Liu^1,2,3 and S. Zheng^1,2,3 ¹Key Laboratory of Traffic Safety on Track Central South University, Ministry of Education, Changsha, Hunan, China ²Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Changsha, Hunan, China ³National & Local Joint Engineering Research Centre of Safety Technology for Rail Vehicle, Changsha, Hunan, China doi:10.4203/ccc.1.34.5 Full Bibliographic Reference for this paper J. Zhang, S. Xie, Z. Liu, S. Zheng, "Study on crashworthiness of concave polygonal tubes evolved from two approaches", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 34.5, 2022, doi:10.4203/ccc.1.34.5 Keywords: crashworthiness, concave tubes, theoretical analysis. Abstract Aiming at the limited energy absorption (EA) of traditional thin-walled structures, the crashworthiness of concave polygonal tubes evolved from convex polygonal tubes is studied. Based on the first evolution proposed by most scholars, another evolution is put forward. The results show that under the same mass, the EA characteristic of the polygonal tubes with concave angle is improved obviously, and the EA characteristic of approach ? is more outstanding. In addition, the theoretical analysis of the mean crushing force of concave tubes is deduced by using the simplified super folding element theory. download the full-text of this paper (PDF, 8 pages, 803 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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