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Finite Element Analysis and Validation for Mode I Interlaminar Fracture Behavior of Woven Fabric Composite for a Train Carbody Using CZM(Cohesive Zone Model)  

Kim, Seung-Chul (한국철도기술연구원, 철도구조연구실)
Kim, Jung-Seol (한국철도기술연구원, 철도구조연구실)
Yoon, Hyuk-Jin (한국철도기술연구원, 철도구조연구실)
Seo, Seung-Il (한국철도기술연구원, 철도구조연구실)
Publication Information
Journal of the Korean Society for Railway / v.12, no.5, 2009 , pp. 719-724 More about this Journal
Abstract
In this study, DCB(double cantilever beam) specimens of woven fabric carbon/epoxy and glass/epoxy were manufactured and mode I fracture toughness of specimen was measured according to ASTM 5528-01. And FE analysis was conducted in the same condition and evaluated the behavior of delamination analytically. Mode I fracture toughness measured by test was $845.7\;J/m^2$ in the case carbon/epoxy and that of glass/epoxy was $1,042\;J/m^2$. FE analysis was conducted using cohesive elements for adhesive layer and applied measured fracture toughness. To verify the result of analysis, the reaction force measured at the end of specimen and that calculated by Timoshenko beam theory were compared. The numerical results show good agreements with the measured one.
Keywords
composite; delamination; mode I; DCB(double cantilever beam) test; cohesive element;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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