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Study on the Axial Crushing Behaviors of UD Kevlar/Epoxy and Carbon-Kevlar/Epoxy Composite Tubes  

Kim, Hyung-Uk (과학기술연합대학원대학교 가상공학과)
Kim, Jung-Seok (한국철도기술연구원 철도구조연구실)
Jung, Hyun-Seung (한국철도기술연구원 철도구조연구실)
Yoon, Hyuk-Jin (한국철도기술연구원 철도구조연구실)
Kwon, Tae-Soo (한국철도기술연구원 정책전략연구실)
Publication Information
Journal of the Korean Society for Railway / v.13, no.3, 2010 , pp. 271-277 More about this Journal
Abstract
In this paper, a numerical model for a Kevlar/Epoxy and Carbon-Kevlar/Epoxy tube used as an energy absorbing component has been developed and then results have been verified through experiment. The 2D shell element and Chang-Chang failure criterion of LS-DYNA that is commercial explicit FE code was used. Mechanical material properties for the model were obtained by material testing in advance. The numerical results were compared with quasi-static test results under axial compressive loading at 10mm/min. From the results, in the case of the Kevlar/Epoxy tube, load-crushed displacement curves were very close to the experiments and SEA (specific energy absorption) shows a good agreement with experimental one within less than 6%. However, the Carbon-Kevlar/Epoxy tube shows some differences with the experimental results.
Keywords
Kevlar; Composite; Tube; Crush; Trigger;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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