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Interface Crack in Anisotropic Solids under Impact Loading

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Abstract:

In this paper, transient dynamic crack analysis in two-dimensional, layered, anisotropic and linear elastic solids is presented. For this purpose, a time-domain boundary element method (BEM) is developed. The homogeneous and anisotropic layers are modeled by the multi-domain BEM formulation. Time-domain elastodynamic fundamental solutions for linear elastic and anisotropic solids are applied in the present BEM. The spatial discretization of the boundary integral equations is performed by a Galerkin-method while a collocation method is implemented for the temporal discretization of the arising convolution integrals. An explicit time-stepping scheme is developed to compute the discrete boundary data and the crack-opening-displacements (CODs). To show the effects of the material anisotropy and the dynamic loading on the dynamic stress intensity factors, numerical examples are presented and discussed.

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Periodical:

Key Engineering Materials (Volumes 348-349)

Pages:

73-76

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.348-349.73

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Online since:

September 2007

Authors:

Michael Wünsche, Chuan Zeng Zhang, Jan Sladek, Vladimir Sladek, Sohichi Hirose

Keywords:

Anisotropic Solids, Dynamic Stress Intensity Factor (DSIF), Impact Loading, Interface Cracks, Time Domain BEM

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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DOI: 10.1016/0013-7944(92)90202-p

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