ARTICLE
Fillet effect on the bending crashworthiness of thin-walled square tubes
1
School of Architectural Engineering, Tongling University, Tongling, Anhui, China
2
School of Rail Transportation, Soochow University, Suzhou, Jiangsu, China
Submission date: 2021-09-11
Final revision date: 2021-11-01
Acceptance date: 2021-11-09
Online publication date: 2021-12-17
Publication date: 2022-01-20
Journal of Theoretical and Applied Mechanics 2022;60(1):103-111
KEYWORDS
thin-walled square tubesbending crashworthinessfillet effectthree-point bendingfinite element analysis
TOPICS
ABSTRACT
Filleting four corners of square tubes is suggested to reduce the peak force and improve
energy absorbing performance. Three-point bending tests are conducted to investigate fillet
radius effects employing an ABAQUS explicit code. Three cases characterized by the ratio
of width to thickness are considered. Fillet greatly reduces the maximum forces compared
with square cross-sections, and the normalized maximum forces decrease with increasing wall
thickness when the fillet radius is larger. Additionally, the fillet dramatically improves SEA
(Specific Energy Absorption). The normalized CFE (Crash Load Efficiency) significantly
exceeds that of the square ones, and the normalized CLEs are almost identical with the
increasing fillet radius.
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| eISSN: | 2543-6309 |
| ISSN: | 1429-2955 |
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