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Interaction of an anti-plane singularity with interfacial anti-cracks in cylindrically anisotropic composites

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Abstract

Anti-plane problem for a singularity interacting with interfacial anti-cracks (rigid lines) under uniform shear stress at infinity in cylindrically anisotropic composites is investigated by utilizing a complex potential technique in this paper. After obtaining the general solution for this problem, the closed solution for the interface containing one anti-crack is presented analytically. In addition, the complex potentials for a screw dislocation dipole inside matrix are obtained by the superimposing method. Expressions of stress singularities around the anti-crack tips, image forces and torques acting on the dislocation or the center of dipole are given explicitly. The results indicate that the anisotropy properties of materials may weaken the stress singularity near the anti-crack tip for the singularity being a concentrated force but enhance the one for the singularity being a screw dislocation and change the equilibrium position of screw dislocation. The presented solutions are valid for anisotropic, orthotropic or isotropic composites and can be reduced to some new or previously known results.

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Authors and Affiliations

  1. College of Mechanics and Aerospace, Hunan University, Changsha, 410082, China

    B. Li, Y. W. Liu & Q. H. Fang

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  1. B. Li
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  2. Y. W. Liu
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  3. Q. H. Fang
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Correspondence to Y. W. Liu.

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Li, B., Liu, Y.W. & Fang, Q.H. Interaction of an anti-plane singularity with interfacial anti-cracks in cylindrically anisotropic composites. Arch Appl Mech 78, 295–309 (2008). https://doi.org/10.1007/s00419-007-0161-x

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  • DOI: https://doi.org/10.1007/s00419-007-0161-x

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