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Interactions of Penny-shaped Cracks in Three-dimensional Solids

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Abstract

The interaction of arbitrarily distributed penny-shaped cracks in three-dimensional solids is analyzed in this paper. Using oblate spheroidal coordinates and displacement functions, an analytic method is developed in which the opening and the sliding displacements on each crack surface are taken as the basic unknown functions. The basic unknown functions can be expanded in series of Legendre polynomials with unknown coefficients. Based on superposition technique, a set of governing equations for the unknown coefficients are formulated from the traction free conditions on each crack surface. The boundary collocation procedure and the average method for crack-surface tractions are used for solving the governing equations. The solution can be obtained for quite closely located cracks. Numerical examples are given for several crack problems. By comparing the present results with other existing results, one can conclude that the present method provides a direct and efficient approach to deal with three-dimensional solids containing multiple cracks.

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Authors and Affiliations

  1. Department of Mathematical and Physical Sciences, NSFC, Beijing, 100085, China

    Shige Zhan

  2. Institute of Mechanics, Chinese Academy of Sciences, LNM, Beijing, 100080, China

    Tzuchiang Wang

Authors
  1. Shige Zhan
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  2. Tzuchiang Wang
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Correspondence to Tzuchiang Wang.

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The English text was polished by Keren Wang

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Zhan, S., Wang, T. Interactions of Penny-shaped Cracks in Three-dimensional Solids. Acta Mech Mech Sinica 22, 341–353 (2006). https://doi.org/10.1007/s10409-006-0007-8

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