Abstract
In this paper, the dynamic stress around a cylindrical nano-inhomogeneity embedded in a semi-infinite solid under anti-plane shear waves is investigated. The surface/interface stress effects around the nano-inhomogeneity and at the straight edge of the semi-infinite solid are both considered. The boundary condition at the straight edge of the semi-infinite solid with surface/interface effects is satisfied by the image method. The incident, scattered and refracted displacement fields in the nano-sized composites are expressed by employing the wave function expansion method. The addition theorem for a cylindrical wave function is applied to accomplish the superposition of wave fields in the two semi-infinite solids. Analyzes show that the effect of interface properties, especially that at the straight edge, on the dynamic stress is significant, and the effect increases noticeably due to the nanoscale of the structure. The incident frequency and angle of waves and the shear modulus ratio of the nano-inhomogeneity to matrix also show a pronounced effect on the dynamic stress distribution if the semi-infinite solid shrinks to nanoscale.
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Tan E.P.S., Lim C.T.: Mechanical characterization of nano fibers—a review. Compos. Sci. Technol. 66, 1102–1111 (2006)
Sharma P., Ganti S., Bhate N.: Effect of surfaces on the size-dependent elastic state of nano-inhomogeneities. Appl. Phys. Lett. 82, 535–537 (2003)
Sharma P., Ganti S.: Interfacial elasticity corrections to size-dependent strain-state of embedded quantum dots. Phys. Stat. Sol. 234, 10–12 (2002)
Mogilevskaya S.G., Crouch S.L., Stolarski H.K.: Multiple interacting circular nano-inhomogeneities with surface/interface effects. J. Mech. Phys. Solids 56, 2298–2327 (2008)
Fang Q.H., Liu Y.W.: Size-dependent elastic interaction of a screw dislocation with a circular nano-inhomogeneity incorporating interface stress. Scr. Mater. 55, 99–102 (2006)
Wang G.F., Wang T.J., Feng X.Q.: Surface effects on the diffraction of plane compressional waves by a nanosized circular hole. J. Appl. Phys. 89, 231923 (2006)
Wang G.F., Feng X.Q., Yu S.W.: Interface effects on the diffraction of plane compressional waves by a nanosized spherical inclusion. J. Appl. Phys. 102, 043533 (2007)
Guz I.A., Rushchitsky J.J.: Computational simulation of harmonic wave propagation in fibrous micro- and nanocomposites. Compos. Sci. Technol. 67, 861–866 (2007)
Fang X.Q., Liu J.X., Yang S.P., Zhang L.L.: Effect of surface/interface on the dynamic stress of two interacting cylindrical nano-inhomogeneities under compressional waves. Thin Solid Films 518, 6938–6944 (2010)
Fang X.Q., Wang X.H., Zhang L.L.: Interface effect on the dynamic stress around an elliptical nano-inhomogeneity subjected to anti-plane shear waves. CMC Comput. Mater. Contin. 16, 229–246 (2010)
Hasheminejad S.M., Avazmohammadi R.: Size-dependent effective dynamic properties of unidirectional nanocomposites with interface energy effects. Comp. Sci. Technol. 69, 2538–2546 (2009)
Mi C., Kouris D.: Nanoparticles under the influence of surface/interface elasticity. J. Mech. Mater. Struct. 1, 763–791 (2006)
Jammes M., Mogilevskaya S.G., Crouch S.L.: Multiple circular nano-inhomogeneities and/or nano-pores in one of two joined isotropic elastic half planes. Eng. Anal. Bound. Elem. 33, 233–248 (2009)
Avazmohammadi R., Yang F., Abbasion S.: Effect of interface stresses on the elastic deformation of an elastic half-plane containing an elastic inclusion. Int. J. Solid. Struct. 46, 2897–2906 (2009)
Gurtin M.E., Murdoch A.I.: A continuum theory of elastic material surfaces. Arch. Ration. Mech. Anal. 57, 291–323 (1975)
Pao Y.H., Mow C.C.: Diffraction of Elastic Waves and Dynamic Stress Concentration. Crane, Russak, New York (1973)
Stratton J.A.: Electromagnetic Theory. McGraw-Hill, New York (1941)
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Yang, Q., Liu, J.X. & Fang, X.Q. Dynamic stress in a semi-infinite solid with a cylindrical nano-inhomogeneity considering nanoscale microstructure. Acta Mech 223, 879–888 (2012). https://doi.org/10.1007/s00707-012-0613-4
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DOI: https://doi.org/10.1007/s00707-012-0613-4