13th International Conference on Fracture June 16–21, 2013, Beijing, China -10- 5. Conclusions In the present paper, the stress distributions in incoherent and coherent wedge models were analyzed using MD, in which the GEAM potential was used. The stress distributions in both models were compared, and the usefulness of coherent model was demonstrated. The coherent model is applicable for analyzing the stress singular field by subtracting the initial stress from the stress distribution after loading. The stress distribution near the edge tip of the interface in MD can be expressed using the anisotropic theory of elasticity considering the interface properties. Acknowledgements The present research was supported in part by a Grant-in-Aid for Scientific Research (B) (No. 2136051) from the Japan Society for the Promotion of Science. References [1] Horike K., Ikeda T., Matumoto R. and Noriyuki N., Stress Singularity Analysis at an Interfacial Corner between Dissimilar Crystals and Evaluation of Mixed Modes Fracture Criteria Using Molecular Statics, Journal of the Society of Materials Science, Vol. 59, No. 12, (2010), pp.908- 915. [2] Koguchi H., Analysis for Stress Singular Fields near a Wedge Corner in 2D Joints Considering Interface Elasticity, ASME 2012 International Mechanical Engineering Congress & Exposition, 2012. [3] Ting T. C. T., Anisotropic Elasticity: Theory and Applications, Oxford University Press, (1996), pp.134-263. [4] Wadley H.N.G., Zhou X., Johnson R.A. and Neurock M., Mechanisms, models and methods of vapor deposition, Progress in Materials Science, 46, Issue 3-4(2001), pp.329-377. [5] Zhou X. W, Wadley H. N. G. and Johnson R. A, Atomic Scale Structure of Sputtered Metal Multilayer, Acta Materialia, 49, (2001), pp.4005-4015. Figure 17. A variation of the order of stress Figure 18. Distribution of stress σyy along the singularity interface
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