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ARTICLE
Crashworthiness and comparative analysis of polygonal single and bi-tubular structures under axial loading – experiments and FE modelling
1
SSM Institute of Engineering and Technology, Faculty of Mechanical Engineering, Dindigul, India
2
Mepco Schlenk Engineering College, Faculty of Mechanical Engineering, Sivakasi, India
Submission date: 2020-03-06
Final revision date: 2020-07-30
Acceptance date: 2020-08-14
Online publication date: 2020-11-28
Publication date: 2021-01-15
Corresponding author
I. Vimal Kannan
Mechanical Engineering, SSM Institute of Engineering and Technology, 624002, Dindigul, India
Mechanical Engineering, SSM Institute of Engineering and Technology, 624002, Dindigul, India
Journal of Theoretical and Applied Mechanics 2021;59(1):81-94
KEYWORDS
crashworthinessthin-walled structuressingle and multi-cell tubular structuresenergy absorptionkey performance indicators
TOPICS
ABSTRACT
This article aims to present a report of experimental and numerical investigations on
crashworthiness characteristics of single and multi-cell/bi-tubular structures. Novel multi-
-cell/bi-tubular structures are proposed in order to improve the crashworthiness perfor-
mance, LS-DYNA FE software is applied for the modelling of axial crashing behaviour to
validate with experimental results and a good agreement is observed. The KPIs are used to
compare various structures and to determine the best performing ones. The investigations
reveal that the HMC4 has significantly obvious effects on the structural crashworthiness and
improved 515% energy absorption efficiency. Afterward, a parametric study has been carried
out for the best energy absorber.
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