ORIGINAL ARTICLE
Evaluating MTS criterion in predicting mixed-mode crack extension under different loading conditions
Mosleh Eftekhari,
Chaoshui Xu,
Corresponding Author
Mosleh Eftekhari
Department of Mining Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran
Correspondence
Mosleh Eftekhari, Department of Mining Engineering, Faculty of Engineering, Tarbiat Modares University, Jalal AleAhmad, Nasr Street, Tehran 14115-14, Iran.
Email: [email protected]
Search for more papers by this authorChaoshui Xu
School of Civil, Environmental and Mining Engineering, University of Adelaide, Adelaide, Australia
Search for more papers by this authorMosleh Eftekhari,
Chaoshui Xu,
Corresponding Author
Mosleh Eftekhari
Department of Mining Engineering, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran
Correspondence
Mosleh Eftekhari, Department of Mining Engineering, Faculty of Engineering, Tarbiat Modares University, Jalal AleAhmad, Nasr Street, Tehran 14115-14, Iran.
Email: [email protected]
Search for more papers by this authorChaoshui Xu
School of Civil, Environmental and Mining Engineering, University of Adelaide, Adelaide, Australia
Search for more papers by this authorAbstract
The maximum tangential stress (MTS) criterion is one of the most widely used criteria for predicting the direction of crack extension. The suitability of this criterion is examined under different loading conditions using the extended finite element method (XFEM). Experimental and numerical results reported in the literature are considered to evaluate the validity and accuracy of the criterion. The results demonstrate that the MTS criterion evaluated by stress intensity factors (SIFs) can accurately predict the direction of crack propagation in specimens under direct tensile loading. This criterion overestimates the angle of crack initiation in the specimen under indirect tensile loading but underestimates the angle in the specimen subjected to 3-point bending. It is concluded that the MTS criterion based on SIFs could not accurately predict the direction of the crack initiation, which could, however, be determined properly based on the stress distribution around the crack tip obtained by the XFEM numerical models.
Open Research
DATA AVAILABILITY STATEMENT
Data sharing is not applicable to this article as no new data were created or analyzed in this study.
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