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http://dx.doi.org/10.5762/KAIS.2014.15.11.6440

Evaluation of the J integral of a CT specimen by FEM  

Kim, Won Beom (Department of Naval Architecture and Ocean Engineering, Faculty of Mechanical Engineering, Ulsan College)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.15, no.11, 2014 , pp. 6440-6445 More about this Journal
Abstract
In steel structures, including ships and offshore structures, defects induced during construction or in use causes cracks and damages. Calculation of the stress intensity factor (SIF) K is one method for crack analysis by fracture mechanics approach. In this paper, an evaluation of K was carried out using the J integral. In particular, in this study, a CT specimen was used to calculate the J integral. In the evaluation, 859 nodes and 1618 elements were used for the J integral calculation of the CT specimen by the in-house FEM program. A comparison of the result with the ASTM formula showed that the results from the current research of the J integral was in the 99% coincidence interval. Overall, cracks in this study can be studied satisfactorily by the J integral from the above mesh size.
Keywords
CT specimen; Fracture Mechanics; J integral; Stress Intensity Factor;
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