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The incipient plastic deformation of single-crystal copper thin film with in-plane residual stress under Hertzian nanoindentation is studied using molecular dynamics simulation. The result reveals that the residual stresses significantly influence the surface strength and dislocation nucleation behavior of material: (i) the indentation hardness decreases with tensile residual stress, while it increases...
A Zener-Stroh crack interacting with an edge dislocation is studied. The crack faces are assumed to be traction free. The applied ‘generalized loading’ for crack is the initial displacement jump and the intervention of the edge dislocation. Through decomposing the problem into two sub-simple problems, using the superposition principle, its solution is obtained. To demonstrate both the validity of...
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