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Geotechnical and Geological Engineering

Erschienen in:

11.12.2018 | Original Paper

Analysis of the Fracture Characteristics and the Stress Intensity Factor of the Symmetric Coalescence Crack in Rock

verfasst von: Jun Wang, Jie Liu, Xiangsen Ouyang, Hongbo Zou

Erschienen in: Geotechnical and Geological Engineering | Ausgabe 4/2019

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Abstract

The present article proposed the analytic solution for the stress intensity factor of the symmetric coalescence crack, and then the effect of the crack propagation direction and the geometry characteristics on the stress intensity factor was discussed. The stress intensity factors of the central symmetric cracks, the edge symmetric cracks and the diagonal symmetric cracks were analyzed using the weight function method for various geometry sizes. In addition, we discussed the propagation direction of the coalescence cracks and introduced the dimensionless stress intensity factor to study the effect of the geometry characteristics on the stress intensity factor. Moreover, the theoretical results were verified by a numerical tests applying FLAC 3D. The results show that the stress intensity factor decreased and then remained at an asymptotic value with the increase in the intersection angle. Simultaneously, the magnitudes of the stress intensity factors for the mode-I and mode-II cracks decreased in the order of the diagonal crack, the central crack and the edge crack.

Vorheriger Artikel Effect of Impact Angle and Rotational Motion of Spherical Blocks on the Coefficients of Restitution for Rockfalls

Nächster Artikel Case of Rock Burst Danger and Its Prediction and Prevention in Tunneling and Mining Period at an Irregular Coal Face

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Titel: Analysis of the Fracture Characteristics and the Stress Intensity Factor of the Symmetric Coalescence Crack in Rock
verfasst von: Jun Wang
Jie Liu
Xiangsen Ouyang
Hongbo Zou
Publikationsdatum: 11.12.2018
Verlag: Springer International Publishing
Erschienen in: Geotechnical and Geological Engineering / Ausgabe 4/2019
Print ISSN: 0960-3182
Elektronische ISSN: 1573-1529
DOI: https://doi.org/10.1007/s10706-018-00775-z

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