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Hindawi, Mathematical Problems in Engineering, (2015), p. 1-9

DOI: 10.1155/2015/305397

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Deterministic and Probabilistic Investigation on Multiple Crack Interactions in a Semi-Infinite Domain

Journal article published in 2015 by Eui-Keun Kim, Habeun Choi ORCID, Kyoungsoo Park, Won-Hee Kang
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The investigation of multiple crack interactions in fracture mechanics is important to predict the safety and reliability of structures. This study aims to investigate the interactions of multiple parallel cracks in a semi-infinite domain in both deterministic and probabilistic ways by using an automated finite element modeling procedure and the Monte Carlo simulation. The stress intensity factor is considered as an indicator of failure and accurately evaluated by using the domain integral technique. The variation of the stress intensity factor according to the position, the length, and the number of cracks is demonstrated. In a probabilistic investigation, the effects of the number of cracks, the random distribution of the crack lengths, and the crack interactions to the failure probability are studied for a semi-infinite domain. The stress redistribution among multiple cracks, the effect of unevenly distributed crack lengths, and the combined effect of crack length uncertainties and a crack shielding effect have been examined.