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http://dx.doi.org/10.5139/JKSAS.2014.42.11.919

Effect on Material Property on the Frature Propagation Behavior  

Jeong, Jaeyeon (Korea Aerospace Research Institute)
Woo, Kyeongsik (Chungbuk National University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.42, no.11, 2014 , pp. 919-926 More about this Journal
Abstract
In this paper, the effect of material properties on fracture behavior was studied using cohesive zone model and extended finite element method. The rectangular tensile specimen with a central inclined initial crack was modeled by plane stress elements. In the CZM modeling, cohesive elements were inserted between every bulk elements in the predicted crack propagation region before analysis, while in the XFEM the enrichment to the elements was added as needed during analysis. The crack propagation behavior was examined for brittle and ductile materials. For thin specimen configuration, wrinkle deformation was accounted for by geometrically nonlinear post-buckling analysis and the effect of wrinkling on the crack propagation was investigated.
Keywords
Brittle Material; Ductile Material; Cohesive Zone Model; eXtended Finite Element Method; Propagation Direction; Wrinkle Analysis;
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