The interaction of two parallel non-coplanar identical surface cracks under tension and bending |
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| Affiliation: | 1. Department of Mechanical Engineering, Hashtgerd Branch, Islamic Azad University, P.O. Box 33615-178, Alborz, Iran;2. Faculty of Engineering, University of Zanjan, P.O. Box 45195-313, Zanjan, Iran;1. Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 610031, China;2. Institute of Applied Mechanics, State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China;3. Department of Engineering Mechanics, Wuhan University, Wuhan 430072, China;1. Wood, Galway, Ireland;2. School of Engineering, University of Aberdeen, King''s College, Aberdeen, AB24 3UE, United Kingdom;3. Wood, Paris, France;1. Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China;2. Oil & Gas Fire Protection Key Laboratory of Sichuan Province, Chengdu, Sichuan, 610500, China |
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| Abstract: | In this paper, the interaction between two identical, non-coplanar, semi-elliptical surface cracks is investigated. The interacting cracks are assumed to be in an infinite plate subjected to remote tension or to pure bending loads. The stress intensity factors (SIFs) for these cracks are calculated using three-dimensional linear finite element analysis. A parametric study involving the relative horizontal and vertical separation distance between the two surface cracks is carried out for a specific crack shape and crack depth to plate thickness ratios of 0.3 and 0.2, respectively. An empirical formula is derived that relates the effects of the relative positions of these cracks to their SIFs. |
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