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http://dx.doi.org/10.12989/sem.2012.42.5.701

Effect of the thickness on the mixed mode crack front fields  

Khan, Shafique M.A. (Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals)
Publication Information
Structural Engineering and Mechanics / v.42, no.5, 2012 , pp. 701-713 More about this Journal
Abstract
Results pertaining to 3D investigations on the effect of the thickness on the stress fields at the crack front are presented. A 3D finite element analysis is performed using a modified single edge-notched tension specimen configuration, with an inclined crack to include mixed mode I-II. A technique to mesh the crack front (3D) with singular finite elements in ANSYS without using third party software is introduced and used in this study. The effect of the specimen thickness is explicitly investigated for six thicknesses ranging from 1 to 32 mm. In addition, three crack inclination angles, including pure Mode-I, are used to study the effect of mixed-mode I-II fracture. An attempt is made to correlate the extent of a particular stress state along the crack front to thickness. In addition, ${\sigma}_{zz}/{\nu}({\sigma}_{xx}+{\sigma}_{yy})$ contours at the crack front are presented as a useful means to analyze the stress state.
Keywords
SENT; thickness; mixed mode; crack front mesh;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)  (Related Records In Web of Science)
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