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http://dx.doi.org/10.7234/kscm.2010.23.4.028

Study on Axial Crushing Behaviors of UD Kevlar/Epoxy with Different Trigger Models  

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
Composites Research / v.23, no.4, 2010 , pp. 28-34 More about this Journal
Abstract
In this paper, in order to develop a realistic trigger model for a unidirectional Kevlar/Epoxy tube, the numerical model has been established and then verified by comparison with the experimental result. To achieve this goal, four different trigger models were candidated and evaluated using the commercial explicit FE code LS-DYNA. In the finite element analysis, the 2D shell element and Chang-Chang failure criterion 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. The load-crushed displacement curves were very close to the experiments and SEA (specific energy absorption) showed a good agreement with experimental one within less than 5%.
Keywords
composite material; kevlar; trigger; tube;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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