期刊
ENGINEERING FRACTURE MECHANICS
卷 105, 期 -, 页码 152-168出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2013.03.033
关键词
Semi-elliptical crack; Cylinder; Mixed-mode fracture mechanics; Fatigue; FEM; Sub-modelling technique
类别
The stress-intensity factor for the circumferential semi-elliptical surface cracks in a hollow cylinder's cross section under torsion is calculated using a finite-element technique. The configuration of standard semi-elliptical surface cracks is described using the outer surface crack-lengths and the crack depths. The compendia for the stress-intensity factor solutions for Mode H, Mode III and both mixed modes are given for the broader aspect ratios and relative crack-depths than previously available. The magnitude of the stress-intensity factor of Mode II near the free surface becomes more significant for stable crack-initiation than that of Mode III at any point along semi-elliptical crack. (C) 2013 Elsevier Ltd. All rights reserved.
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