Analysis of Slot Orientation in Shear-Compression Specimen (SCS) |
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| Authors: | M Vural A Molinari N Bhattacharyya |
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| Institution: | 1. Mechanical, Materials & Aerospace Engineering Department, Illinois Institute of Technology, 10 West 32nd Street, Chicago, IL, 60616, USA
2. Laboratory of Physics and Mechanics of Materials, UMR CNRS 7554, University of Metz, Ile du Saulcy, 57045, Metz, France
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| Abstract: | This paper presents an analytical treatment as well as experimental measurement of the plastic deformation field in shear-compression specimen (SCS) by using digital image processing (DIC) technique. The results provide a set of useful expressions that relates externally applied displacement and load quantities to the equivalent stress and equivalent plastic strain within the gage section. Based on the analysis, we propose modifying the slot angle of SCS geometry from its original value of 45º to 35.26º in order to enhance the uniformity of stress and strain fields in gage section. It is shown by analysis that this enhancement is essentially because the compatibility and boundary conditions that yield a homogeneous deformation field is naturally satisfied for the particular slot orientation of ???=?35.26°. This conclusion is also supported by experimental evidence that comparatively shows the edge effects for varying slot angles. |
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